hematite/tools/

host_inspect.rs

use crate::agent::truncation::safe_head;
use serde_json::Value;
use std::collections::HashSet;
use std::fmt::Write as _;
use std::fs;
use std::path::{Path, PathBuf};
use std::process::Command;

const DEFAULT_MAX_ENTRIES: usize = 10;
const MAX_ENTRIES_CAP: usize = 25;
const DIRECTORY_SCAN_NODE_BUDGET: usize = 25_000;

pub async fn inspect_host(args: &Value) -> Result<String, String> {
    let mut topic = args
        .get("topic")
        .and_then(|v| v.as_str())
        .unwrap_or("summary")
        .to_string();
    let max_entries = parse_max_entries(args);
    let filter = parse_name_filter(args).unwrap_or_default().to_lowercase();

    // Topic Interceptor: Force ad_user for AD-related queries to resolve model variance
    if (topic == "processes" || topic == "network" || topic == "summary")
        && (filter.contains("ad")
            || filter.contains("sid")
            || filter.contains("administrator")
            || filter.contains("domain"))
    {
        topic = "ad_user".to_string();
    }

    let result = match topic.as_str() {
        "summary" => inspect_summary(max_entries),
        "toolchains" => inspect_toolchains(),
        "path" => inspect_path(max_entries),
        "env_doctor" => inspect_env_doctor(max_entries),
        "fix_plan" => inspect_fix_plan(parse_issue_text(args), parse_port_filter(args), max_entries).await,
        "network" => inspect_network(max_entries),
        "lan_discovery" | "network_neighborhood" | "upnp" | "neighborhood" => {
            inspect_lan_discovery(max_entries)
        }
        "audio" | "sound" | "microphone" | "speakers" | "speaker" | "mic" => {
            inspect_audio(max_entries)
        }
        "bluetooth" | "bt" | "paired_devices" | "wireless_audio" => {
            inspect_bluetooth(max_entries)
        }
        "camera" | "webcam" | "camera_privacy" => inspect_camera(max_entries),
        "sign_in" | "windows_hello" | "hello" | "pin" | "login_issues" | "signin" => {
            inspect_sign_in(max_entries)
        }
        "installer_health" | "installer" | "msi" | "msiexec" | "app_installer" => {
            inspect_installer_health(max_entries)
        }
        "onedrive" | "sync_client" | "cloud_sync" | "known_folder_backup" => {
            inspect_onedrive(max_entries)
        }
        "browser_health" | "browser" | "webview2" | "default_browser" => {
            inspect_browser_health(max_entries)
        }
        "identity_auth"
        | "office_auth"
        | "m365_auth"
        | "microsoft_365_auth"
        | "auth_broker" => inspect_identity_auth(max_entries),
        "outlook" | "outlook_health" | "ms_outlook" => inspect_outlook(max_entries),
        "teams" | "ms_teams" | "teams_health" => inspect_teams(max_entries),
        "windows_backup" | "backup" | "file_history" | "wbadmin" | "system_restore" => {
            inspect_windows_backup(max_entries)
        }
        "search_index" | "windows_search" | "indexing" | "search" => {
            inspect_search_index(max_entries)
        }
        "services" => inspect_services(parse_name_filter(args), max_entries),
        "processes" => inspect_processes(parse_name_filter(args), max_entries),
        "desktop" => inspect_known_directory("Desktop", desktop_dir(), max_entries).await,
        "downloads" => inspect_known_directory("Downloads", downloads_dir(), max_entries).await,
        "disk" => {
            let path = resolve_optional_path(args)?;
            inspect_disk(path, max_entries).await
        }
        "ports" => inspect_ports(parse_port_filter(args), max_entries),
        "log_check" => inspect_log_check(parse_lookback_hours(args), max_entries),
        "startup_items" | "startup" | "boot" | "autorun" => inspect_startup_items(max_entries),
        "health_report" | "system_health" => inspect_health_report(),
        "storage" => inspect_storage(max_entries),
        "hardware" => inspect_hardware(),
        "updates" | "windows_update" => inspect_updates(),
        "security" | "antivirus" | "defender" => inspect_security(),
        "pending_reboot" | "reboot_required" => inspect_pending_reboot(),
        "disk_health" | "smart" | "drive_health" => inspect_disk_health(),
        "battery" => inspect_battery(),
        "recent_crashes" | "crashes" | "bsod" => inspect_recent_crashes(max_entries),
        "scheduled_tasks" | "tasks" => inspect_scheduled_tasks(max_entries),
        "dev_conflicts" | "dev_environment" => inspect_dev_conflicts(),
        "connectivity" | "internet" | "internet_check" => inspect_connectivity(),
        "wifi" | "wi-fi" | "wireless" | "wlan" => inspect_wifi(),
        "connections" | "tcp_connections" | "active_connections" => inspect_connections(max_entries),
        "vpn" => inspect_vpn(),
        "public_ip" | "external_ip" | "myip" => inspect_public_ip().await,
        "ssl_cert" | "tls_cert" | "cert_audit" | "website_cert" => {
            let host = args.get("host").and_then(|v| v.as_str()).unwrap_or("google.com");
            inspect_ssl_cert(host)
        }
        "proxy" | "proxy_settings" => inspect_proxy(),
        "firewall_rules" | "firewall-rules" => inspect_firewall_rules(max_entries),
        "traceroute" | "tracert" | "trace_route" | "trace" => {
            let host = args
                .get("host")
                .and_then(|v| v.as_str())
                .unwrap_or("8.8.8.8")
                .to_string();
            inspect_traceroute(&host, max_entries)
        }
        "dns_cache" | "dnscache" | "dns-cache" => inspect_dns_cache(max_entries),
        "arp" | "arp_table" => inspect_arp(),
        "route_table" | "routes" | "routing_table" => inspect_route_table(max_entries),
        "os_config" | "system_config" => inspect_os_config(),
        "resource_load" | "performance" | "system_load" | "performance_diagnosis" => inspect_resource_load(),
        "env" | "environment" | "environment_variables" | "env_vars" => inspect_env(max_entries),
        "hosts_file" | "hosts" | "etc_hosts" => inspect_hosts_file(),
        "docker" | "containers" | "docker_status" => inspect_docker(max_entries),
        "docker_filesystems" | "docker_mounts" | "docker_storage" | "container_mounts" => {
            inspect_docker_filesystems(max_entries)
        }
        "wsl" | "wsl_distros" | "subsystem" => inspect_wsl(),
        "wsl_filesystems" | "wsl_storage" | "wsl_mounts" => inspect_wsl_filesystems(max_entries),
        "ssh" | "ssh_config" | "ssh_status" => inspect_ssh(),
        "installed_software" | "installed" | "programs" | "software" | "packages" => inspect_installed_software(max_entries),
        "git_config" | "git_global" => inspect_git_config(),
        "databases" | "database" | "db_services" | "db" => inspect_databases(),
        "user_accounts" | "users" | "local_users" | "accounts" => inspect_user_accounts(max_entries),
        "audit_policy" | "audit" | "auditpol" => inspect_audit_policy(),
        "shares" | "smb_shares" | "network_shares" | "mapped_drives" => inspect_shares(max_entries),
        "dns_servers" | "dns_config" | "dns_resolver" | "nameservers" => inspect_dns_servers(),
        "bitlocker" | "encryption" | "drive_encryption" | "bitlocker_status" => inspect_bitlocker(),
        "rdp" | "remote_desktop" | "rdp_status" => inspect_rdp(),
        "shadow_copies" | "vss" | "volume_shadow" | "backups" | "snapshots" => inspect_shadow_copies(),
        "pagefile" | "page_file" | "virtual_memory" | "swap" => inspect_pagefile(),
        "windows_features" | "optional_features" | "installed_features" | "features" => inspect_windows_features(max_entries),
        "printers" | "printer" | "print_queue" | "printing" => inspect_printers(max_entries),
        "winrm" | "remote_management" | "psremoting" => inspect_winrm(),
        "network_stats" | "adapter_stats" | "nic_stats" | "interface_stats" => inspect_network_stats(max_entries),
        "udp_ports" | "udp_listeners" | "udp" => inspect_udp_ports(max_entries),
        "gpo" | "group_policy" | "applied_policies" => inspect_gpo(),
        "certificates" | "certs" | "ssl_certs" => inspect_certificates(max_entries),
        "integrity" | "sfc" | "dism" | "system_health_deep" => inspect_integrity(),
        "domain" | "active_directory" | "ad_context" | "workgroup" => inspect_domain(),
        "device_health" | "hardware_errors" | "yellow_bangs" => inspect_device_health(),
        "drivers" | "system_drivers" | "driver_list" => inspect_drivers(max_entries),
        "peripherals" | "usb" | "input_devices" | "connected_hardware" => inspect_peripherals(max_entries),
        "sessions" | "logins" | "active_sessions" => inspect_sessions(max_entries),
        "data_audit" | "csv_audit" | "file_audit" => {
            let path = resolve_optional_path(args)?;
            inspect_data_audit(path, max_entries).await
        }
        "repo_doctor" => {
            let path = resolve_optional_path(args)?;
            inspect_repo_doctor(path, max_entries)
        }
        "directory" => {
            let raw_path = args
                .get("path")
                .and_then(|v| v.as_str())
                .ok_or_else(|| {
                    "Missing required argument: 'path' for inspect_host(topic: \"directory\")"
                        .to_string()
                })?;
            let resolved = resolve_path(raw_path)?;
            inspect_directory("Directory", resolved, max_entries).await
        }
        "disk_benchmark" | "stress_test" | "io_intensity" => {
            let path = resolve_optional_path(args)?;
            inspect_disk_benchmark(path).await
        }
        "permissions" | "acl" | "access_control" => {
            let path = resolve_optional_path(args)?;
            inspect_permissions(path, max_entries)
        }
        "login_history" | "logon_history" | "user_logins" => {
            inspect_login_history(max_entries)
        }
        "share_access" | "unc_access" | "remote_share" => {
            let path = resolve_path(args.get("path").and_then(|v| v.as_str()).unwrap_or(""))?;
            inspect_share_access(path)
        }
        "registry_audit" | "persistence" | "integrity_audit" => inspect_registry_audit(),
        "thermal" | "throttling" | "overheating" => inspect_thermal(),
        "activation" | "license_status" | "slmgr" => inspect_activation(),
        "patch_history" | "hotfixes" | "recent_patches" => inspect_patch_history(max_entries),
        "ad_user" | "ad" | "domain_user" => {
            let identity = parse_name_filter(args).unwrap_or_default();
            inspect_ad_user(&identity)
        }
        "dns_lookup" | "dig" | "nslookup" => {
            let name = parse_name_filter(args).unwrap_or_default();
            let record_type = args.get("type").and_then(|v| v.as_str()).unwrap_or("A");
            inspect_dns_lookup(&name, record_type)
        }
        "hyperv" | "hyper-v" | "vms" => inspect_hyperv(),
        "ip_config" | "ip_detail" => inspect_ip_config(),
        "dhcp" | "dhcp_lease" | "lease" | "dhcp_detail" => inspect_dhcp(),
        "mtu" | "path_mtu" | "pmtu" | "frame_size" | "mtu_discovery" => inspect_mtu(),
        "ipv6" | "ipv6_status" | "ipv6_address" | "ipv6_prefix" | "ipv6_config" | "slaac" | "dhcpv6" => inspect_ipv6(),
        "tcp_params" | "tcp_settings" | "tcp_autotuning" | "tcp_config" | "tcp_tuning" | "tcp_window" => inspect_tcp_params(),
        "wlan_profiles" | "wifi_profiles" | "wireless_profiles" | "saved_wifi" | "saved_networks" => inspect_wlan_profiles(),
        "ipsec" | "ipsec_sa" | "ipsec_policy" | "ipsec_rules" | "ipsec_tunnel" | "ike" => inspect_ipsec(),
        "netbios" | "netbios_status" | "wins" | "nbtstat" | "netbios_config" => inspect_netbios(),
        "nic_teaming" | "nic_team" | "teaming" | "lacp" | "bonding" | "link_aggregation" => inspect_nic_teaming(),
        "snmp" | "snmp_agent" | "snmp_service" | "snmp_config" => inspect_snmp(),
        "port_test" | "port_check" | "test_port" | "check_port" | "tcp_test" | "reachable" => {
            let pt_host = args.get("host").and_then(|v| v.as_str()).map(|s| s.to_string());
            let pt_port = args.get("port").and_then(|v| v.as_u64()).and_then(|p| u16::try_from(p).ok());
            inspect_port_test(pt_host.as_deref(), pt_port)
        }
        "network_profile" | "network_location" | "net_profile" | "network_category" => inspect_network_profile(),
        "overclocker" | "thermal_deep" | "clocks" | "voltage" => inspect_overclocker().await,
        "display_config" | "display" | "monitor" | "monitors" | "resolution" | "refresh_rate" | "screen" => {
            inspect_display_config(max_entries)
        }
        "ntp" | "time_sync" | "time_synchronization" | "clock_sync" | "w32tm" | "clock" => {
            inspect_ntp()
        }
        "cpu_power" | "turbo_boost" | "cpu_frequency" | "cpu_freq" | "processor_power" | "boost" => {
            inspect_cpu_power()
        }
        "credentials" | "credential_manager" | "saved_passwords" | "stored_credentials" => {
            inspect_credentials(max_entries)
        }
        "tpm" | "secure_boot" | "uefi" | "tpm_status" | "secureboot" | "firmware_security" => {
            inspect_tpm()
        }
        "latency" | "ping" | "ping_test" | "rtt" | "packet_loss" | "reachability" => {
            inspect_latency()
        }
        "network_adapter" | "nic" | "nic_settings" | "adapter_settings" | "nic_offload" | "nic_advanced" => {
            inspect_network_adapter()
        }
        "event_query" | "event_log" | "events" | "event_search" | "eventlog" => {
            let event_id = args.get("event_id").and_then(|v| v.as_u64()).and_then(|n| u32::try_from(n).ok());
            let log_name = args.get("log").and_then(|v| v.as_str()).map(|s| s.to_string());
            let source = args.get("source").and_then(|v| v.as_str()).map(|s| s.to_string());
            let hours = args.get("hours").and_then(|v| v.as_u64()).and_then(|h| u32::try_from(h).ok()).unwrap_or(24u32);
            let level = args.get("level").and_then(|v| v.as_str()).map(|s| s.to_string());
            inspect_event_query(event_id, log_name.as_deref(), source.as_deref(), hours, level.as_deref(), max_entries)
        }
        "app_crashes" | "application_crashes" | "app_errors" | "application_errors" | "faulting_application" => {
            let process_filter = args.get("process").and_then(|v| v.as_str()).map(|s| s.to_string());
            inspect_app_crashes(process_filter.as_deref(), max_entries)
        }
        "mdm_enrollment" | "mdm" | "intune" | "intune_enrollment" | "device_enrollment" | "autopilot" => {
            inspect_mdm_enrollment()
        }
        "storage_spaces" | "storage_pool" | "storage_pools" | "virtual_disk" | "virtual_disks" | "windows_raid" => {
            inspect_storage_spaces()
        }
        "defender_quarantine" | "quarantine" | "threat_history" | "malware_history" | "defender_history" | "detected_threats" => {
            inspect_defender_quarantine(max_entries)
        }
        "domain_health" | "dc_connectivity" | "ad_connectivity" | "kerberos_health" => {
            inspect_domain_health()
        }
        "service_dependencies" | "svc_deps" | "service_deps" => {
            inspect_service_dependencies(max_entries)
        }
        "wmi_health" | "wmi_repository" | "wmi_status" => {
            inspect_wmi_health()
        }
        "local_security_policy" | "password_policy" | "account_policy" | "ntlm_policy" | "lm_policy" => {
            inspect_local_security_policy()
        }
        "usb_history" | "usb_devices" | "usb_forensics" | "usbstor" => {
            inspect_usb_history(max_entries)
        }
        "print_spooler" | "spooler" | "printnightmare" | "print_security" | "printer_security" => {
            inspect_print_spooler()
        }
        other => Err(format!(
            "Unknown inspect_host topic '{}'. Use one of: summary, toolchains, path, env_doctor, fix_plan, network, lan_discovery, audio, bluetooth, camera, sign_in, installer_health, onedrive, browser_health, identity_auth, outlook, teams, windows_backup, search_index, display_config, ntp, cpu_power, credentials, tpm, latency, network_adapter, dhcp, mtu, ipv6, tcp_params, wlan_profiles, ipsec, netbios, nic_teaming, snmp, port_test, public_ip, ssl_cert, data_audit, network_profile, services, processes, desktop, downloads, directory, disk_benchmark, disk, ports, repo_doctor, log_check, startup_items, health_report, storage, hardware, updates, security, pending_reboot, disk_health, battery, recent_crashes, app_crashes, scheduled_tasks, dev_conflicts, connectivity, wifi, connections, vpn, proxy, firewall_rules, traceroute, dns_cache, arp, route_table, os_config, resource_load, env, hosts_file, docker, docker_filesystems, wsl, wsl_filesystems, ssh, installed_software, git_config, databases, user_accounts, audit_policy, shares, dns_servers, bitlocker, rdp, shadow_copies, pagefile, windows_features, printers, winrm, network_stats, udp_ports, gpo, certificates, integrity, domain, domain_health, device_health, drivers, peripherals, sessions, permissions, login_history, share_access, registry_audit, thermal, activation, patch_history, ad_user, dns_lookup, hyperv, ip_config, overclocker, event_query, mdm_enrollment, storage_spaces, defender_quarantine, service_dependencies, wmi_health, local_security_policy, usb_history, print_spooler.",
            other
        )),

    };

    result.map(|body| annotate_privilege_limited_output(topic.as_str(), body))
}

fn annotate_privilege_limited_output(topic: &str, body: String) -> String {
    let Some(scope) = admin_sensitive_topic_scope(topic) else {
        return body;
    };
    let lower = body.to_lowercase();
    let privilege_limited = lower.contains("access denied")
        || lower.contains("administrator privilege is required")
        || lower.contains("administrator privileges required")
        || lower.contains("requires administrator")
        || lower.contains("requires elevation")
        || lower.contains("non-admin session")
        || lower.contains("could not be fully determined from this session");
    if !privilege_limited || lower.contains("=== elevation note ===") {
        return body;
    }

    let mut annotated = body;
    annotated.push_str("\n=== Elevation note ===\n");
    annotated.push_str("- Hematite should stay non-admin by default.\n");
    annotated.push_str(
        "- This result may be partial because Windows restricted one or more read-only provider calls in the current session.\n",
    );
    let _ = writeln!(
        annotated,
        "- Rerun Hematite as Administrator only if you need a definitive {scope} answer."
    );
    annotated
}

fn admin_sensitive_topic_scope(topic: &str) -> Option<&'static str> {
    match topic {
        "tpm" | "secure_boot" | "uefi" | "tpm_status" | "secureboot" | "firmware_security" => {
            Some("TPM / Secure Boot / firmware")
        }
        "gpo" | "group_policy" | "applied_policies" => Some("Group Policy"),
        "audit_policy" | "audit" | "auditpol" => Some("audit policy"),
        "winrm" | "remote_management" | "psremoting" => Some("WinRM"),
        "bitlocker" | "encryption" | "drive_encryption" | "bitlocker_status" => Some("BitLocker"),
        "windows_features" | "optional_features" | "installed_features" | "features" => {
            Some("Windows Features")
        }
        "udp_ports" | "udp_listeners" | "udp" => Some("UDP listener"),
        _ => None,
    }
}

#[cfg(test)]
mod privilege_hint_tests {
    use super::annotate_privilege_limited_output;

    #[test]
    fn annotate_privilege_limited_output_only_tags_admin_sensitive_topics() {
        let body = "Host inspection: network\nError: Access denied.\n".to_string();
        let annotated = annotate_privilege_limited_output("network", body.clone());
        assert_eq!(annotated, body);
    }

    #[test]
    fn annotate_privilege_limited_output_adds_targeted_note_for_tpm() {
        let body = "Host inspection: tpm\n\n=== Findings ===\n- Finding: TPM / Secure Boot state could not be fully determined from this session - firmware mode, privileges, or Windows TPM providers may be limiting visibility.\n".to_string();
        let annotated = annotate_privilege_limited_output("tpm", body);
        assert!(annotated.contains("=== Elevation note ==="));
        assert!(annotated.contains("stay non-admin by default"));
        assert!(annotated.contains("definitive TPM / Secure Boot / firmware answer"));
    }
}

#[cfg(test)]
mod event_query_tests {
    use super::is_event_query_no_results_message;

    #[cfg(target_os = "windows")]
    #[test]
    fn treats_windows_no_results_message_as_empty_query() {
        assert!(is_event_query_no_results_message(
            "No events were found that match the specified selection criteria."
        ));
    }

    #[cfg(target_os = "windows")]
    #[test]
    fn does_not_treat_real_errors_as_empty_query() {
        assert!(!is_event_query_no_results_message("Access is denied."));
    }
}

fn parse_max_entries(args: &Value) -> usize {
    args.get("max_entries")
        .and_then(|v| v.as_u64())
        .map(|n| n as usize)
        .unwrap_or(DEFAULT_MAX_ENTRIES)
        .clamp(1, MAX_ENTRIES_CAP)
}

fn parse_port_filter(args: &Value) -> Option<u16> {
    args.get("port")
        .and_then(|v| v.as_u64())
        .and_then(|n| u16::try_from(n).ok())
}

fn parse_name_filter(args: &Value) -> Option<String> {
    args.get("name")
        .and_then(|v| v.as_str())
        .map(str::trim)
        .filter(|value| !value.is_empty())
        .map(|value| value.to_string())
}

fn parse_lookback_hours(args: &Value) -> Option<u32> {
    args.get("lookback_hours")
        .and_then(|v| v.as_u64())
        .map(|n| n as u32)
}

fn parse_issue_text(args: &Value) -> Option<String> {
    args.get("issue")
        .and_then(|v| v.as_str())
        .map(str::trim)
        .filter(|value| !value.is_empty())
        .map(|value| value.to_string())
}

#[cfg(target_os = "windows")]
fn is_event_query_no_results_message(message: &str) -> bool {
    let lower = message.to_ascii_lowercase();
    lower.contains("no events were found")
        || lower.contains("no events match the specified selection criteria")
}

fn resolve_optional_path(args: &Value) -> Result<PathBuf, String> {
    match args.get("path").and_then(|v| v.as_str()) {
        Some(raw_path) => resolve_path(raw_path),
        None => {
            std::env::current_dir().map_err(|e| format!("Failed to get current directory: {e}"))
        }
    }
}

fn inspect_summary(max_entries: usize) -> Result<String, String> {
    let current_dir =
        std::env::current_dir().map_err(|e| format!("Failed to get current directory: {e}"))?;
    let workspace_root = crate::tools::file_ops::workspace_root();
    let workspace_mode = workspace_mode_label(&workspace_root);
    let path_stats = analyze_path_env();
    let toolchains = collect_toolchains();

    let mut out = String::from("Host inspection: summary\n\n");
    let _ = writeln!(out, "- OS: {}", std::env::consts::OS);
    let _ = writeln!(out, "- Current directory: {}", current_dir.display());
    let _ = writeln!(out, "- Workspace root: {}", workspace_root.display());
    let _ = writeln!(out, "- Workspace mode: {}", workspace_mode);
    let _ = writeln!(out, "- Preferred shell: {}", preferred_shell_label());
    let _ = writeln!(
        out,
        "- PATH entries: {} total, {} unique, {} duplicates, {} missing",
        path_stats.total_entries,
        path_stats.unique_entries,
        path_stats.duplicate_entries.len(),
        path_stats.missing_entries.len()
    );

    if toolchains.found.is_empty() {
        out.push_str(
            "- Toolchains found: none of the common developer tools were detected on PATH\n",
        );
    } else {
        out.push_str("- Toolchains found:\n");
        for (label, version) in toolchains.found.iter().take(max_entries.min(8)) {
            let _ = writeln!(out, "  - {}: {}", label, version);
        }
        if toolchains.found.len() > max_entries.min(8) {
            let _ = writeln!(
                out,
                "  - ... {} more found tools omitted",
                toolchains.found.len() - max_entries.min(8)
            );
        }
    }

    if !toolchains.missing.is_empty() {
        let _ = writeln!(
            out,
            "- Common tools not detected on PATH: {}",
            toolchains.missing.join(", ")
        );
    }

    for (label, path) in [("Desktop", desktop_dir()), ("Downloads", downloads_dir())] {
        match path {
            Some(path) if path.exists() => match count_top_level_items(&path) {
                Ok(count) => {
                    let _ = writeln!(
                        out,
                        "- {}: {} top-level items at {}",
                        label,
                        count,
                        path.display()
                    );
                }
                Err(e) => {
                    let _ = writeln!(
                        out,
                        "- {}: exists at {} but could not inspect ({})",
                        label,
                        path.display(),
                        e
                    );
                }
            },
            Some(path) => {
                let _ = writeln!(
                    out,
                    "- {}: expected at {} but not found",
                    label,
                    path.display()
                );
            }
            None => {
                let _ = writeln!(out, "- {}: location unavailable on this host", label);
            }
        }
    }

    Ok(out.trim_end().to_string())
}

fn inspect_toolchains() -> Result<String, String> {
    let report = collect_toolchains();
    let mut out = String::from("Host inspection: toolchains\n\n");

    if report.found.is_empty() {
        out.push_str("- No common developer tools were detected on PATH.");
    } else {
        out.push_str("Detected developer tools:\n");
        for (label, version) in report.found {
            let _ = writeln!(out, "- {}: {}", label, version);
        }
    }

    if !report.missing.is_empty() {
        out.push_str("\nNot detected on PATH:\n");
        for label in report.missing {
            let _ = writeln!(out, "- {}", label);
        }
    }

    Ok(out.trim_end().to_string())
}

fn inspect_path(max_entries: usize) -> Result<String, String> {
    let path_stats = analyze_path_env();
    let mut out = String::from("Host inspection: PATH\n\n");
    let _ = writeln!(out, "- Total entries: {}", path_stats.total_entries);
    let _ = writeln!(out, "- Unique entries: {}", path_stats.unique_entries);
    let _ = writeln!(
        out,
        "- Duplicate entries: {}",
        path_stats.duplicate_entries.len()
    );
    let _ = writeln!(out, "- Missing paths: {}", path_stats.missing_entries.len());

    out.push_str("\nPATH entries:\n");
    for entry in path_stats.entries.iter().take(max_entries) {
        let _ = writeln!(out, "- {}", entry);
    }
    if path_stats.entries.len() > max_entries {
        let _ = writeln!(
            out,
            "- ... {} more entries omitted",
            path_stats.entries.len() - max_entries
        );
    }

    if !path_stats.duplicate_entries.is_empty() {
        out.push_str("\nDuplicate entries:\n");
        for entry in path_stats.duplicate_entries.iter().take(max_entries) {
            let _ = writeln!(out, "- {}", entry);
        }
        if path_stats.duplicate_entries.len() > max_entries {
            let _ = writeln!(
                out,
                "- ... {} more duplicates omitted",
                path_stats.duplicate_entries.len() - max_entries
            );
        }
    }

    if !path_stats.missing_entries.is_empty() {
        out.push_str("\nMissing directories:\n");
        for entry in path_stats.missing_entries.iter().take(max_entries) {
            let _ = writeln!(out, "- {}", entry);
        }
        if path_stats.missing_entries.len() > max_entries {
            let _ = writeln!(
                out,
                "- ... {} more missing entries omitted",
                path_stats.missing_entries.len() - max_entries
            );
        }
    }

    Ok(out.trim_end().to_string())
}

fn inspect_env_doctor(max_entries: usize) -> Result<String, String> {
    let path_stats = analyze_path_env();
    let toolchains = collect_toolchains();
    let package_managers = collect_package_managers();
    let findings = build_env_doctor_findings(&toolchains, &package_managers, &path_stats);

    let mut out = String::from("Host inspection: env_doctor\n\n");
    let _ = writeln!(
        out,
        "- PATH health: {} duplicates, {} missing entries",
        path_stats.duplicate_entries.len(),
        path_stats.missing_entries.len()
    );
    let _ = writeln!(out, "- Toolchains found: {}", toolchains.found.len());
    let _ = writeln!(
        out,
        "- Package managers found: {}",
        package_managers.found.len()
    );

    if !package_managers.found.is_empty() {
        out.push_str("\nPackage managers:\n");
        for (label, version) in package_managers.found.iter().take(max_entries) {
            let _ = writeln!(out, "- {}: {}", label, version);
        }
        if package_managers.found.len() > max_entries {
            let _ = writeln!(
                out,
                "- ... {} more package managers omitted",
                package_managers.found.len() - max_entries
            );
        }
    }

    if !path_stats.duplicate_entries.is_empty() {
        out.push_str("\nDuplicate PATH entries:\n");
        for entry in path_stats.duplicate_entries.iter().take(max_entries.min(5)) {
            let _ = writeln!(out, "- {}", entry);
        }
        if path_stats.duplicate_entries.len() > max_entries.min(5) {
            let _ = writeln!(
                out,
                "- ... {} more duplicate entries omitted",
                path_stats.duplicate_entries.len() - max_entries.min(5)
            );
        }
    }

    if !path_stats.missing_entries.is_empty() {
        out.push_str("\nMissing PATH entries:\n");
        for entry in path_stats.missing_entries.iter().take(max_entries.min(5)) {
            let _ = writeln!(out, "- {}", entry);
        }
        if path_stats.missing_entries.len() > max_entries.min(5) {
            let _ = writeln!(
                out,
                "- ... {} more missing entries omitted",
                path_stats.missing_entries.len() - max_entries.min(5)
            );
        }
    }

    if !findings.is_empty() {
        out.push_str("\nFindings:\n");
        for finding in findings.iter().take(max_entries.max(5)) {
            let _ = writeln!(out, "- {}", finding);
        }
        if findings.len() > max_entries.max(5) {
            let _ = writeln!(
                out,
                "- ... {} more findings omitted",
                findings.len() - max_entries.max(5)
            );
        }
    } else {
        out.push_str("\nFindings:\n- No obvious environment drift was detected from PATH and package-manager checks.");
    }

    out.push_str(
        "\nGuidance:\n- This report already includes the PATH and package-manager health details. Do not call `inspect_host(path)` next unless the user explicitly asks for the raw PATH list.",
    );

    Ok(out.trim_end().to_string())
}

#[derive(Clone, Copy, Debug, Eq, PartialEq)]
enum FixPlanKind {
    EnvPath,
    PortConflict,
    LmStudio,
    DriverInstall,
    GroupPolicy,
    FirewallRule,
    SshKey,
    WslSetup,
    ServiceConfig,
    WindowsActivation,
    RegistryEdit,
    ScheduledTaskCreate,
    DiskCleanup,
    DnsResolution,
    Generic,
}

async fn inspect_fix_plan(
    issue: Option<String>,
    port_filter: Option<u16>,
    max_entries: usize,
) -> Result<String, String> {
    let issue = issue.unwrap_or_else(|| {
        "Help me fix PATH, toolchain, port-conflict, or LM Studio connectivity problems."
            .to_string()
    });
    let plan_kind = classify_fix_plan_kind(&issue, port_filter);
    match plan_kind {
        FixPlanKind::EnvPath => inspect_env_fix_plan(&issue, max_entries),
        FixPlanKind::PortConflict => inspect_port_fix_plan(&issue, port_filter, max_entries),
        FixPlanKind::LmStudio => inspect_lm_studio_fix_plan(&issue, max_entries).await,
        FixPlanKind::DriverInstall => inspect_driver_install_fix_plan(&issue),
        FixPlanKind::GroupPolicy => inspect_group_policy_fix_plan(&issue),
        FixPlanKind::FirewallRule => inspect_firewall_rule_fix_plan(&issue),
        FixPlanKind::SshKey => inspect_ssh_key_fix_plan(&issue),
        FixPlanKind::WslSetup => inspect_wsl_setup_fix_plan(&issue),
        FixPlanKind::ServiceConfig => inspect_service_config_fix_plan(&issue),
        FixPlanKind::WindowsActivation => inspect_windows_activation_fix_plan(&issue),
        FixPlanKind::RegistryEdit => inspect_registry_edit_fix_plan(&issue),
        FixPlanKind::ScheduledTaskCreate => inspect_scheduled_task_fix_plan(&issue),
        FixPlanKind::DiskCleanup => inspect_disk_cleanup_fix_plan(&issue),
        FixPlanKind::DnsResolution => inspect_dns_fix_plan(&issue),
        FixPlanKind::Generic => inspect_generic_fix_plan(&issue),
    }
}

fn classify_fix_plan_kind(issue: &str, port_filter: Option<u16>) -> FixPlanKind {
    let lower = issue.to_ascii_lowercase();
    // FirewallRule must be checked before PortConflict — "open port 80 in the firewall"
    // is firewall rule creation, not a port ownership conflict.
    if lower.contains("firewall rule")
        || lower.contains("inbound rule")
        || lower.contains("outbound rule")
        || (lower.contains("firewall")
            && (lower.contains("allow")
                || lower.contains("block")
                || lower.contains("create")
                || lower.contains("open")))
    {
        FixPlanKind::FirewallRule
    } else if port_filter.is_some()
        || lower.contains("port ")
        || lower.contains("address already in use")
        || lower.contains("already in use")
        || lower.contains("what owns port")
        || lower.contains("listening on port")
    {
        FixPlanKind::PortConflict
    } else if lower.contains("lm studio")
        || lower.contains("localhost:1234")
        || lower.contains("/v1/models")
        || lower.contains("no coding model loaded")
        || lower.contains("embedding model")
        || lower.contains("server on port 1234")
        || lower.contains("runtime refresh")
    {
        FixPlanKind::LmStudio
    } else if lower.contains("driver")
        || lower.contains("gpu driver")
        || lower.contains("nvidia driver")
        || lower.contains("amd driver")
        || lower.contains("install driver")
        || lower.contains("update driver")
    {
        FixPlanKind::DriverInstall
    } else if lower.contains("group policy")
        || lower.contains("gpedit")
        || lower.contains("local policy")
        || lower.contains("secpol")
        || lower.contains("administrative template")
    {
        FixPlanKind::GroupPolicy
    } else if lower.contains("ssh key")
        || lower.contains("ssh-keygen")
        || lower.contains("generate ssh")
        || lower.contains("authorized_keys")
        || lower.contains("id_rsa")
        || lower.contains("id_ed25519")
    {
        FixPlanKind::SshKey
    } else if lower.contains("wsl")
        || lower.contains("windows subsystem for linux")
        || lower.contains("install ubuntu")
        || lower.contains("install linux on windows")
        || lower.contains("wsl2")
    {
        FixPlanKind::WslSetup
    } else if lower.contains("service")
        && (lower.contains("start ")
            || lower.contains("stop ")
            || lower.contains("restart ")
            || lower.contains("enable ")
            || lower.contains("disable ")
            || lower.contains("configure service"))
    {
        FixPlanKind::ServiceConfig
    } else if lower.contains("activate windows")
        || lower.contains("windows activation")
        || lower.contains("product key")
        || lower.contains("kms")
        || lower.contains("not activated")
    {
        FixPlanKind::WindowsActivation
    } else if lower.contains("registry")
        || lower.contains("regedit")
        || lower.contains("hklm")
        || lower.contains("hkcu")
        || lower.contains("reg add")
        || lower.contains("reg delete")
        || lower.contains("registry key")
    {
        FixPlanKind::RegistryEdit
    } else if lower.contains("scheduled task")
        || lower.contains("task scheduler")
        || lower.contains("schtasks")
        || lower.contains("create task")
        || lower.contains("run on startup")
        || lower.contains("run on schedule")
        || lower.contains("cron")
    {
        FixPlanKind::ScheduledTaskCreate
    } else if lower.contains("disk cleanup")
        || lower.contains("free up disk")
        || lower.contains("free up space")
        || lower.contains("clear cache")
        || lower.contains("disk full")
        || lower.contains("low disk space")
        || lower.contains("reclaim space")
    {
        FixPlanKind::DiskCleanup
    } else if lower.contains("cargo")
        || lower.contains("rustc")
        || lower.contains("path")
        || lower.contains("package manager")
        || lower.contains("package managers")
        || lower.contains("toolchain")
        || lower.contains("winget")
        || lower.contains("choco")
        || lower.contains("scoop")
        || lower.contains("python")
        || lower.contains("node")
    {
        FixPlanKind::EnvPath
    } else if lower.contains("dns ")
        || lower.contains("nameserver")
        || lower.contains("cannot resolve")
        || lower.contains("nslookup")
        || lower.contains("flushdns")
    {
        FixPlanKind::DnsResolution
    } else {
        FixPlanKind::Generic
    }
}

fn inspect_env_fix_plan(issue: &str, max_entries: usize) -> Result<String, String> {
    let path_stats = analyze_path_env();
    let toolchains = collect_toolchains();
    let package_managers = collect_package_managers();
    let findings = build_env_doctor_findings(&toolchains, &package_managers, &path_stats);
    let found_tools = toolchains
        .found
        .iter()
        .map(|(label, _)| label.as_str())
        .collect::<HashSet<_>>();
    let found_managers = package_managers
        .found
        .iter()
        .map(|(label, _)| label.as_str())
        .collect::<HashSet<_>>();

    let mut out = String::from("Host inspection: fix_plan\n\n");
    let _ = writeln!(out, "- Requested issue: {}", issue);
    out.push_str("- Fix-plan type: environment/path\n");
    let _ = writeln!(
        out,
        "- PATH health: {} duplicates, {} missing entries",
        path_stats.duplicate_entries.len(),
        path_stats.missing_entries.len()
    );
    let _ = writeln!(out, "- Toolchains found: {}", toolchains.found.len());
    let _ = writeln!(
        out,
        "- Package managers found: {}",
        package_managers.found.len()
    );

    out.push_str("\nLikely causes:\n");
    if found_tools.contains("rustc") && !found_managers.contains("cargo") {
        out.push_str(
            "- Rust is present but Cargo is not. The most common cause is a missing Rustup bin path such as `%USERPROFILE%\\.cargo\\bin` on Windows or `$HOME/.cargo/bin` on Unix.\n",
        );
    }
    if path_stats.duplicate_entries.is_empty()
        && path_stats.missing_entries.is_empty()
        && !findings.is_empty()
    {
        for finding in findings.iter().take(max_entries.max(4)) {
            let _ = writeln!(out, "- {}", finding);
        }
    } else {
        if !path_stats.duplicate_entries.is_empty() {
            out.push_str("- Duplicate PATH rows create clutter and can hide which install path is actually winning.\n");
        }
        if !path_stats.missing_entries.is_empty() {
            out.push_str("- Stale PATH rows point at directories that no longer exist, which makes environment drift harder to reason about.\n");
        }
    }
    if found_tools.contains("node")
        && !found_managers.contains("npm")
        && !found_managers.contains("pnpm")
    {
        out.push_str("- Node is present without a detected package manager. That usually means a partial install or PATH drift.\n");
    }
    if found_tools.contains("python")
        && !found_managers.contains("pip")
        && !found_managers.contains("uv")
        && !found_managers.contains("pipx")
    {
        out.push_str("- Python is present without a detected package manager. That usually means the launcher works but Scripts/bin is not discoverable.\n");
    }

    out.push_str("\nFix plan:\n");
    out.push_str("- Verify the command resolution first with `where cargo`, `where rustc`, `where python`, or `Get-Command cargo` so you know whether the tool is missing or just hidden behind PATH drift.\n");
    if found_tools.contains("rustc") && !found_managers.contains("cargo") {
        out.push_str("- Add the Rustup bin directory to your user PATH, then restart the terminal. On Windows that is usually `%USERPROFILE%\\.cargo\\bin`.\n");
    } else if !found_tools.contains("rustc") && !found_managers.contains("cargo") {
        out.push_str("- If Rust is not installed at all, install Rustup first, then reopen the terminal. On Windows the clean path is `winget install Rustlang.Rustup`.\n");
    }
    if !path_stats.duplicate_entries.is_empty() || !path_stats.missing_entries.is_empty() {
        out.push_str("- Clean duplicate or dead PATH rows in Environment Variables so the winning toolchain path is obvious and stable.\n");
    }
    if found_tools.contains("node")
        && !found_managers.contains("npm")
        && !found_managers.contains("pnpm")
    {
        out.push_str("- Repair the Node install or reinstall Node so `npm` is restored. If you prefer `pnpm`, install it after Node is healthy.\n");
    }
    if found_tools.contains("python")
        && !found_managers.contains("pip")
        && !found_managers.contains("uv")
        && !found_managers.contains("pipx")
    {
        out.push_str("- Repair Python or install a Python package manager explicitly. `py -m ensurepip --upgrade` is the least-invasive first check on Windows.\n");
    }

    if !path_stats.duplicate_entries.is_empty() {
        out.push_str("\nExample duplicate PATH rows:\n");
        for entry in path_stats.duplicate_entries.iter().take(max_entries.min(5)) {
            let _ = writeln!(out, "- {}", entry);
        }
    }
    if !path_stats.missing_entries.is_empty() {
        out.push_str("\nExample missing PATH rows:\n");
        for entry in path_stats.missing_entries.iter().take(max_entries.min(5)) {
            let _ = writeln!(out, "- {}", entry);
        }
    }

    out.push_str(
        "\nWhy this works:\n- PATH problems are usually resolution problems, not mysterious tool failures. Verify the executable path, repair the install only when needed, then restart the shell so the environment is rebuilt cleanly.",
    );
    Ok(out.trim_end().to_string())
}

fn inspect_port_fix_plan(
    issue: &str,
    port_filter: Option<u16>,
    max_entries: usize,
) -> Result<String, String> {
    let requested_port = port_filter.or_else(|| first_port_in_text(issue));
    let listeners = collect_listening_ports().unwrap_or_default();
    let mut matching = listeners;
    if let Some(port) = requested_port {
        matching.retain(|entry| entry.port == port);
    }
    let processes = collect_processes().unwrap_or_default();

    let mut out = String::from("Host inspection: fix_plan\n\n");
    let _ = writeln!(out, "- Requested issue: {}", issue);
    out.push_str("- Fix-plan type: port_conflict\n");
    if let Some(port) = requested_port {
        let _ = writeln!(out, "- Requested port: {}", port);
    } else {
        out.push_str("- Requested port: not parsed from the issue text\n");
    }
    let _ = writeln!(out, "- Matching listeners found: {}", matching.len());

    if !matching.is_empty() {
        out.push_str("\nCurrent listeners:\n");
        for entry in matching.iter().take(max_entries.min(5)) {
            let process_name = entry
                .pid
                .as_deref()
                .and_then(|pid| pid.parse::<u32>().ok())
                .and_then(|pid| {
                    processes
                        .iter()
                        .find(|process| process.pid == pid)
                        .map(|process| process.name.as_str())
                })
                .unwrap_or("unknown");
            let pid = entry.pid.as_deref().unwrap_or("unknown");
            let _ = writeln!(
                out,
                "- {} {} ({}) pid {} process {}",
                entry.protocol, entry.local, entry.state, pid, process_name
            );
        }
    }

    out.push_str("\nFix plan:\n");
    out.push_str("- Identify whether the existing listener is expected. If it is your dev server, reuse it or change your app config instead of killing it blindly.\n");
    if !matching.is_empty() {
        out.push_str("- If the listener is stale, stop the owning process by PID or close the parent app cleanly. On Windows, `taskkill /PID <pid> /F` is the blunt option, but closing the app normally is safer.\n");
    } else {
        out.push_str("- Re-run a listener check right before changing anything. Port conflicts can disappear if a stale dev process exits between checks.\n");
    }
    out.push_str("- If the port is intentionally occupied, move your app to another port instead of fighting the existing process.\n");
    out.push_str("- If the port keeps getting reclaimed after you kill it, inspect startup services or background tools rather than repeating `taskkill` loops.\n");
    out.push_str(
        "\nWhy this works:\n- Port conflicts are ownership problems. Once you know which PID owns the listener, the clean fix is either stop that owner or move your app to a different port.",
    );
    Ok(out.trim_end().to_string())
}

async fn inspect_lm_studio_fix_plan(issue: &str, max_entries: usize) -> Result<String, String> {
    let config = crate::agent::config::load_config();
    let configured_api = config
        .api_url
        .unwrap_or_else(|| "http://localhost:1234/v1".to_string());
    let models_url = format!("{}/models", configured_api.trim_end_matches('/'));
    let reachability = probe_http_endpoint(&models_url).await;
    let embed_model = detect_loaded_embed_model(&configured_api).await;

    let mut out = String::from("Host inspection: fix_plan\n\n");
    let _ = writeln!(out, "- Requested issue: {}", issue);
    out.push_str("- Fix-plan type: lm_studio\n");
    let _ = writeln!(out, "- Configured API URL: {}", configured_api);
    let _ = writeln!(out, "- Probe URL: {}", models_url);
    match &reachability {
        EndpointProbe::Reachable(status) => {
            let _ = writeln!(out, "- Endpoint reachable: yes (HTTP {})", status);
        }
        EndpointProbe::Unreachable(detail) => {
            let _ = writeln!(out, "- Endpoint reachable: no ({})", detail);
        }
    }
    let _ = writeln!(
        out,
        "- Embedding model loaded: {}",
        embed_model.as_deref().unwrap_or("none detected")
    );

    out.push_str("\nFix plan:\n");
    match reachability {
        EndpointProbe::Reachable(_) => {
            out.push_str("- LM Studio is reachable, so the first fix step is model state, not networking. Check whether a chat model is actually loaded and whether the local server is still serving the model you expect.\n");
        }
        EndpointProbe::Unreachable(_) => {
            out.push_str("- Start LM Studio and make sure the local server is running on the configured endpoint. Hematite defaults to `http://localhost:1234/v1` unless `.hematite/settings.json` overrides `api_url`.\n");
        }
    }
    out.push_str("- If Hematite is pointed at the wrong endpoint, fix `api_url` in `.hematite/settings.json` and restart or run `/runtime-refresh`.\n");
    out.push_str("- If chat works but semantic search does not, load an embedding model as a second resident local model. Hematite expects a `nomic-embed` or similar embedding model there.\n");
    out.push_str("- If LM Studio keeps responding with no model loaded, load the coding model first, then start the server again before blaming Hematite.\n");
    out.push_str("- If the server is up but turns still fail, narrow the prompt or refresh the runtime profile so Hematite picks up the live model and context budget.\n");
    if let Some(model) = embed_model {
        let _ = writeln!(out,
            "- Current embedding model already visible: {}. That means the embeddings lane is configured, so focus on the chat model or endpoint next.",
            model
        );
    }
    if max_entries > 0 {
        out.push_str(
            "\nWhy this works:\n- LM Studio failures usually collapse into three buckets: wrong endpoint, server not running, or models not loaded. Confirm the endpoint first, then fix model state instead of guessing.",
        );
    }
    Ok(out.trim_end().to_string())
}

fn inspect_driver_install_fix_plan(issue: &str) -> Result<String, String> {
    // Read GPU info from the hardware topic output for grounding
    #[cfg(target_os = "windows")]
    let gpu_info = {
        let out = Command::new("powershell")
            .args([
                "-NoProfile",
                "-NonInteractive",
                "-Command",
                "Get-CimInstance Win32_VideoController | Select-Object Name,DriverVersion,DriverDate | ForEach-Object { \"GPU: $($_.Name) | Driver: $($_.DriverVersion) | Date: $($_.DriverDate)\" }",
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        out.trim().to_string()
    };
    #[cfg(not(target_os = "windows"))]
    let gpu_info = String::from("(GPU detection not available on this platform)");

    let mut out = String::from("Host inspection: fix_plan\n\n");
    let _ = writeln!(out, "- Requested issue: {}", issue);
    out.push_str("- Fix-plan type: driver_install\n");
    if !gpu_info.is_empty() {
        let _ = write!(out, "\nDetected GPU(s):\n{}\n", gpu_info);
    }
    out.push_str("\nFix plan — Installing or updating GPU drivers:\n");
    out.push_str("1. Identify your GPU make from the detection above (NVIDIA, AMD, or Intel).\n");
    out.push_str(
        "2. Open Device Manager: press Win+X → Device Manager → expand Display Adapters.\n",
    );
    out.push_str("3. Right-click your GPU → Properties → Driver tab — note the current driver version and date.\n");
    out.push_str("4. Download the latest driver directly from the manufacturer:\n");
    out.push_str("   - NVIDIA: geforce.com/drivers (use GeForce Experience for auto-detection)\n");
    out.push_str("   - AMD: amd.com/support (use Auto-Detect tool)\n");
    out.push_str("   - Intel: intel.com/content/www/us/en/download-center/home.html\n");
    out.push_str("5. Run the downloaded installer. Choose 'Express Install' (keeps settings) or 'Custom / Clean Install' (wipes old driver state — recommended if fixing corruption).\n");
    out.push_str("6. Reboot when prompted — driver installs always require a restart.\n");
    out.push_str("\nVerification:\n");
    out.push_str("- After reboot, run in PowerShell:\n  Get-CimInstance Win32_VideoController | Select-Object Name,DriverVersion,DriverDate\n");
    out.push_str("- The DriverVersion should match what you installed.\n");
    out.push_str("\nWhy this works:\nManufacturer installers handle INF signing, kernel-mode driver registration, and WDDM version negotiation automatically. Manual Device Manager updates often miss supporting components.");
    Ok(out.trim_end().to_string())
}

fn inspect_group_policy_fix_plan(issue: &str) -> Result<String, String> {
    // Check Windows edition — Group Policy editor is not available on Home editions
    #[cfg(target_os = "windows")]
    let edition = {
        Command::new("powershell")
            .args([
                "-NoProfile",
                "-NonInteractive",
                "-Command",
                "(Get-CimInstance Win32_OperatingSystem).Caption",
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default()
            .trim()
            .to_string()
    };
    #[cfg(not(target_os = "windows"))]
    let edition = String::from("(Windows edition detection not available)");

    let is_home = edition.to_lowercase().contains("home");

    let mut out = String::from("Host inspection: fix_plan\n\n");
    let _ = writeln!(out, "- Requested issue: {}", issue);
    out.push_str("- Fix-plan type: group_policy\n");
    let _ = writeln!(
        out,
        "- Windows edition detected: {}",
        if edition.is_empty() {
            "unknown".to_string()
        } else {
            edition.clone()
        }
    );

    if is_home {
        out.push_str("\nWARNING: Windows Home does not include the Local Group Policy Editor (gpedit.msc).\n");
        out.push_str("Options on Home edition:\n");
        out.push_str("1. Use the Registry Editor (regedit) as an alternative — most Group Policy settings map to registry keys under HKLM\\SOFTWARE\\Policies or HKCU\\SOFTWARE\\Policies.\n");
        out.push_str(
            "2. Install the gpedit.msc enabler script (third-party — use with caution).\n",
        );
        out.push_str("3. Upgrade to Windows Pro if you need full Group Policy support.\n");
    } else {
        out.push_str("\nFix plan — Editing Local Group Policy:\n");
        out.push_str("1. Press Win+R → type gpedit.msc → press Enter (requires administrator).\n");
        out.push_str("2. Navigate the tree: Computer Configuration (machine-wide) or User Configuration (current user).\n");
        out.push_str("3. Drill into Administrative Templates → find the policy you want.\n");
        out.push_str("4. Double-click a policy → set to Enabled, Disabled, or Not Configured.\n");
        out.push_str("5. Click OK — most policies apply on next logon or after gpupdate.\n");
        out.push_str("6. To force immediate application, run in an elevated PowerShell:\n  gpupdate /force\n");
    }
    out.push_str("\nVerification:\n");
    out.push_str("- Run `gpresult /r` in an elevated command prompt to see applied policies.\n");
    out.push_str(
        "- Or: `Get-GPResultantSetOfPolicy` in PowerShell (requires RSAT on domain machines).\n",
    );
    out.push_str("\nWhy this works:\nGroup Policy writes settings to well-known registry paths that Windows reads at logon and on policy refresh cycles. gpupdate /force triggers an immediate refresh without requiring a restart.");
    Ok(out.trim_end().to_string())
}

fn inspect_firewall_rule_fix_plan(issue: &str) -> Result<String, String> {
    #[cfg(target_os = "windows")]
    let profile_state = {
        Command::new("powershell")
            .args([
                "-NoProfile",
                "-NonInteractive",
                "-Command",
                "Get-NetFirewallProfile | Select-Object Name,Enabled | ForEach-Object { \"$($_.Name): $($_.Enabled)\" }",
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default()
            .trim()
            .to_string()
    };
    #[cfg(not(target_os = "windows"))]
    let profile_state = String::new();

    let mut out = String::from("Host inspection: fix_plan\n\n");
    let _ = writeln!(out, "- Requested issue: {}", issue);
    out.push_str("- Fix-plan type: firewall_rule\n");
    if !profile_state.is_empty() {
        let _ = write!(out, "\nFirewall profile state:\n{}\n", profile_state);
    }
    out.push_str("\nFix plan — Creating or modifying a Windows Firewall rule (PowerShell, run as Administrator):\n");
    out.push_str("\nTo ALLOW inbound traffic on a port:\n");
    out.push_str("  New-NetFirewallRule -DisplayName \"My App Port 8080\" -Direction Inbound -Protocol TCP -LocalPort 8080 -Action Allow -Profile Any\n");
    out.push_str("\nTo BLOCK outbound traffic to an address:\n");
    out.push_str("  New-NetFirewallRule -DisplayName \"Block Example\" -Direction Outbound -RemoteAddress 1.2.3.4 -Action Block\n");
    out.push_str("\nTo ALLOW an application through the firewall:\n");
    out.push_str("  New-NetFirewallRule -DisplayName \"My App\" -Direction Inbound -Program \"C:\\Path\\To\\App.exe\" -Action Allow\n");
    out.push_str("\nTo REMOVE a rule you created:\n");
    out.push_str("  Remove-NetFirewallRule -DisplayName \"My App Port 8080\"\n");
    out.push_str("\nTo see existing custom rules:\n");
    out.push_str("  Get-NetFirewallRule | Where-Object { $_.Enabled -eq 'True' -and $_.PolicyStoreSourceType -ne 'GroupPolicy' } | Select-Object DisplayName,Direction,Action\n");
    out.push_str("\nVerification:\n");
    out.push_str("- After creating the rule, test reachability from another machine or use:\n  Test-NetConnection -ComputerName localhost -Port 8080\n");
    out.push_str("\nWhy this works:\nNew-NetFirewallRule writes directly to the Windows Filtering Platform (WFP) rule store — the same engine used by the Firewall GUI, but scriptable and reproducible.");
    Ok(out.trim_end().to_string())
}

fn inspect_ssh_key_fix_plan(issue: &str) -> Result<String, String> {
    let home = dirs_home().unwrap_or_else(|| std::path::PathBuf::from("~"));
    let ssh_dir = home.join(".ssh");
    let has_ssh_dir = ssh_dir.exists();
    let has_ed25519 = ssh_dir.join("id_ed25519").exists();
    let has_rsa = ssh_dir.join("id_rsa").exists();
    let has_authorized_keys = ssh_dir.join("authorized_keys").exists();

    let mut out = String::from("Host inspection: fix_plan\n\n");
    let _ = writeln!(out, "- Requested issue: {}", issue);
    out.push_str("- Fix-plan type: ssh_key\n");
    let _ = writeln!(out, "- ~/.ssh directory exists: {}", has_ssh_dir);
    let _ = writeln!(out, "- id_ed25519 key found: {}", has_ed25519);
    let _ = writeln!(out, "- id_rsa key found: {}", has_rsa);
    let _ = writeln!(out, "- authorized_keys found: {}", has_authorized_keys);

    if has_ed25519 {
        out.push_str("\nYou already have an Ed25519 key. If you want to use it, skip to the 'Add to agent' step.\n");
    }

    out.push_str("\nFix plan — Generating an SSH key pair:\n");
    out.push_str("1. Open PowerShell (or Terminal) — no elevation needed.\n");
    out.push_str("2. Generate an Ed25519 key (preferred over RSA):\n");
    out.push_str("   ssh-keygen -t ed25519 -C \"your@email.com\"\n");
    out.push_str(
        "   - Accept the default path (~/.ssh/id_ed25519) unless you need a custom name.\n",
    );
    out.push_str("   - Set a passphrase (recommended) or press Enter twice for no passphrase.\n");
    out.push_str("3. Start the SSH agent and add your key:\n");
    out.push_str("   # Windows (PowerShell, run as Admin once to enable the service):\n");
    out.push_str("   Set-Service -Name ssh-agent -StartupType Automatic\n");
    out.push_str("   Start-Service ssh-agent\n");
    out.push_str("   # Then add the key (normal PowerShell):\n");
    out.push_str("   ssh-add ~/.ssh/id_ed25519\n");
    out.push_str("4. Copy your PUBLIC key to the target server's authorized_keys:\n");
    out.push_str("   # Print your public key:\n");
    out.push_str("   cat ~/.ssh/id_ed25519.pub\n");
    out.push_str("   # On the target server, append it:\n");
    out.push_str("   echo \"<paste public key>\" >> ~/.ssh/authorized_keys\n");
    out.push_str("   chmod 600 ~/.ssh/authorized_keys\n");
    out.push_str("5. Test the connection:\n");
    out.push_str("   ssh user@server-address\n");
    out.push_str("\nFor GitHub/GitLab:\n");
    out.push_str("- Copy the public key: Get-Content ~/.ssh/id_ed25519.pub | Set-Clipboard\n");
    out.push_str("- Paste it into GitHub Settings → SSH and GPG keys → New SSH key\n");
    out.push_str("- Test: ssh -T git@github.com\n");
    out.push_str("\nWhy this works:\nEd25519 keys use elliptic-curve cryptography — shorter than RSA, harder to brute-force, and supported by all modern SSH servers. The agent caches the decrypted key so you only enter the passphrase once per session.");
    Ok(out.trim_end().to_string())
}

fn inspect_wsl_setup_fix_plan(issue: &str) -> Result<String, String> {
    #[cfg(target_os = "windows")]
    let wsl_status = {
        let out = Command::new("wsl")
            .args(["--status"])
            .output()
            .ok()
            .map(|o| {
                let stdout = String::from_utf8(o.stdout).unwrap_or_default();
                let stderr = String::from_utf8(o.stderr).unwrap_or_default();
                format!("{}{}", stdout, stderr)
            })
            .unwrap_or_default();
        out.trim().to_string()
    };
    #[cfg(not(target_os = "windows"))]
    let wsl_status = String::new();

    let wsl_installed =
        !wsl_status.is_empty() && !wsl_status.to_lowercase().contains("not installed");

    let mut out = String::from("Host inspection: fix_plan\n\n");
    let _ = writeln!(out, "- Requested issue: {}", issue);
    out.push_str("- Fix-plan type: wsl_setup\n");
    let _ = writeln!(out, "- WSL already installed: {}", wsl_installed);
    if !wsl_status.is_empty() {
        let _ = write!(out, "- WSL status:\n{}\n", wsl_status);
    }

    if wsl_installed {
        out.push_str("\nWSL is already installed. To install a new Linux distro:\n");
        out.push_str("1. Run in PowerShell (Admin): wsl --install -d Ubuntu\n");
        out.push_str("   Available distros: wsl --list --online\n");
        out.push_str("2. After install, launch from Start menu or type 'ubuntu' in PowerShell.\n");
        out.push_str("3. Create your Linux username and password when prompted.\n");
    } else {
        out.push_str("\nFix plan — Installing WSL2 (Windows Subsystem for Linux):\n");
        out.push_str("1. Open PowerShell as Administrator.\n");
        out.push_str("2. Install WSL with the default Ubuntu distro:\n");
        out.push_str("   wsl --install\n");
        out.push_str("   (This enables the required Windows features, downloads WSL2, and installs Ubuntu)\n");
        out.push_str("3. Reboot when prompted — WSL requires a restart after the first install.\n");
        out.push_str("4. After reboot, Ubuntu will launch automatically and ask you to create a username and password.\n");
        out.push_str("5. Set WSL2 as the default version (should already be set, but confirm):\n");
        out.push_str("   wsl --set-default-version 2\n");
        out.push_str("\nTo install a different distro instead of Ubuntu:\n");
        out.push_str("   wsl --install -d Debian\n");
        out.push_str("   wsl --list --online   # to see all available distros\n");
    }
    out.push_str("\nVerification:\n");
    out.push_str("- Run: wsl --list --verbose\n");
    out.push_str("- You should see your distro with State: Running and Version: 2\n");
    out.push_str("\nWhy this works:\nWSL2 runs a real Linux kernel inside a lightweight Hyper-V VM. The `wsl --install` command handles all the Windows feature enablement, kernel download, and distro bootstrapping automatically.");
    Ok(out.trim_end().to_string())
}

fn inspect_service_config_fix_plan(issue: &str) -> Result<String, String> {
    let lower = issue.to_ascii_lowercase();
    // Extract service name hints from the issue text
    let service_hint = if lower.contains("ssh") {
        Some("sshd")
    } else if lower.contains("mysql") {
        Some("MySQL80")
    } else if lower.contains("postgres") || lower.contains("postgresql") {
        Some("postgresql")
    } else if lower.contains("redis") {
        Some("Redis")
    } else if lower.contains("nginx") {
        Some("nginx")
    } else if lower.contains("apache") {
        Some("Apache2.4")
    } else {
        None
    };

    #[cfg(target_os = "windows")]
    let service_state = if let Some(svc) = service_hint {
        Command::new("powershell")
            .args([
                "-NoProfile",
                "-NonInteractive",
                "-Command",
                &format!("Get-Service -Name '{}' -ErrorAction SilentlyContinue | Select-Object Name,Status,StartType | ForEach-Object {{ \"Service: $($_.Name) | Status: $($_.Status) | StartType: $($_.StartType)\" }}", svc),
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default()
            .trim()
            .to_string()
    } else {
        String::new()
    };
    #[cfg(not(target_os = "windows"))]
    let service_state = String::new();

    let mut out = String::from("Host inspection: fix_plan\n\n");
    let _ = writeln!(out, "- Requested issue: {}", issue);
    out.push_str("- Fix-plan type: service_config\n");
    if let Some(svc) = service_hint {
        let _ = writeln!(out, "- Service detected in request: {}", svc);
    }
    if !service_state.is_empty() {
        let _ = writeln!(out, "- Current state: {}", service_state);
    }

    out.push_str("\nFix plan — Managing Windows services (PowerShell, run as Administrator):\n");
    out.push_str("\nStart a service:\n");
    out.push_str("  Start-Service -Name \"ServiceName\"\n");
    out.push_str("\nStop a service:\n");
    out.push_str("  Stop-Service -Name \"ServiceName\"\n");
    out.push_str("\nRestart a service:\n");
    out.push_str("  Restart-Service -Name \"ServiceName\"\n");
    out.push_str("\nEnable a service to start automatically:\n");
    out.push_str("  Set-Service -Name \"ServiceName\" -StartupType Automatic\n");
    out.push_str("\nDisable a service (stops it from auto-starting):\n");
    out.push_str("  Set-Service -Name \"ServiceName\" -StartupType Disabled\n");
    out.push_str("\nFind the exact service name:\n");
    out.push_str("  Get-Service | Where-Object { $_.DisplayName -like '*mysql*' }\n");
    out.push_str("\nVerification:\n");
    out.push_str("  Get-Service -Name \"ServiceName\" | Select-Object Name,Status,StartType\n");
    if let Some(svc) = service_hint {
        let _ = write!(
            out,
            "\nFor your detected service ({}):\n  Get-Service -Name '{}'\n",
            svc, svc
        );
    }
    out.push_str("\nWhy this works:\nPowerShell's service cmdlets talk directly to the Windows Service Control Manager (SCM) — the same authority that manages auto-start, stop, and dependency resolution for all registered Windows services.");
    Ok(out.trim_end().to_string())
}

fn inspect_windows_activation_fix_plan(issue: &str) -> Result<String, String> {
    #[cfg(target_os = "windows")]
    let activation_status = {
        Command::new("powershell")
            .args([
                "-NoProfile",
                "-NonInteractive",
                "-Command",
                "Get-CimInstance SoftwareLicensingProduct -Filter \"Name like 'Windows%'\" | Where-Object { $_.PartialProductKey } | Select-Object Name,LicenseStatus | ForEach-Object { \"Product: $($_.Name) | Status: $(if ($_.LicenseStatus -eq 1) { 'LICENSED' } else { 'NOT LICENSED (code ' + $_.LicenseStatus + ')' })\" }",
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default()
            .trim()
            .to_string()
    };
    #[cfg(not(target_os = "windows"))]
    let activation_status = String::new();

    let activation_lower = activation_status.to_lowercase();
    let is_licensed =
        activation_lower.contains("licensed") && !activation_lower.contains("not licensed");

    let mut out = String::from("Host inspection: fix_plan\n\n");
    let _ = writeln!(out, "- Requested issue: {}", issue);
    out.push_str("- Fix-plan type: windows_activation\n");
    if !activation_status.is_empty() {
        let _ = write!(out, "- Current activation state:\n{}\n", activation_status);
    }

    if is_licensed {
        out.push_str(
            "\nWindows appears to be activated. If you are still seeing activation prompts, try:\n",
        );
        out.push_str("1. Run in elevated PowerShell: slmgr /ato\n");
        out.push_str("   (Forces an online activation attempt)\n");
        out.push_str("2. Check activation details: slmgr /dli\n");
    } else {
        out.push_str("\nFix plan — Activating Windows:\n");
        out.push_str("1. Check your current status first:\n");
        out.push_str("   slmgr /dli   (basic info)\n");
        out.push_str("   slmgr /dlv   (detailed — shows remaining rearms, grace period)\n");
        out.push_str("\n2. If you have a retail product key:\n");
        out.push_str("   slmgr /ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX   (install key)\n");
        out.push_str("   slmgr /ato                                   (activate online)\n");
        out.push_str("\n3. If you had a digital license (linked to your Microsoft account):\n");
        out.push_str("   - Go to Settings → System → Activation\n");
        out.push_str("   - Click 'Troubleshoot' → 'I changed hardware on this device recently'\n");
        out.push_str("   - Sign in with the Microsoft account that holds the license\n");
        out.push_str("\n4. If using a volume license (organization/enterprise):\n");
        out.push_str("   - Contact your IT department for the KMS server address\n");
        out.push_str("   - Set KMS host: slmgr /skms kms.yourorg.com\n");
        out.push_str("   - Activate:    slmgr /ato\n");
    }
    out.push_str("\nVerification:\n");
    out.push_str("  slmgr /dli   — should show 'License Status: Licensed'\n");
    out.push_str("  Or: Settings → System → Activation → 'Windows is activated'\n");
    out.push_str("\nWhy this works:\nslmgr.vbs is the Software License Manager — Microsoft's official command-line tool for all Windows license operations. It talks directly to the Software Protection Platform service.");
    Ok(out.trim_end().to_string())
}

fn inspect_registry_edit_fix_plan(issue: &str) -> Result<String, String> {
    let mut out = String::from("Host inspection: fix_plan\n\n");
    let _ = writeln!(out, "- Requested issue: {}", issue);
    out.push_str("- Fix-plan type: registry_edit\n");
    out.push_str(
        "\nCAUTION: Registry edits affect core Windows behavior. Always back up before editing.\n",
    );
    out.push_str("\nFix plan — Safely editing the Windows Registry:\n");
    out.push_str("\n1. Back up before you touch anything:\n");
    out.push_str("   # Export the key you're about to change (PowerShell):\n");
    out.push_str("   reg export \"HKLM\\SOFTWARE\\MyKey\" C:\\backup\\MyKey_backup.reg\n");
    out.push_str("   # Or export the whole registry (takes a while):\n");
    out.push_str("   reg export HKLM C:\\backup\\HKLM_full.reg\n");
    out.push_str("\n2. Read a value (PowerShell, no elevation needed for HKCU):\n");
    out.push_str("   Get-ItemProperty -Path 'HKLM:\\SOFTWARE\\MyKey' -Name 'MyValue'\n");
    out.push_str("\n3. Create or update a DWORD value (PowerShell, Admin for HKLM):\n");
    out.push_str(
        "   Set-ItemProperty -Path 'HKLM:\\SOFTWARE\\MyKey' -Name 'MyValue' -Value 1 -Type DWord\n",
    );
    out.push_str("\n4. Create a new key:\n");
    out.push_str("   New-Item -Path 'HKLM:\\SOFTWARE\\MyNewKey' -Force\n");
    out.push_str("\n5. Delete a value:\n");
    out.push_str("   Remove-ItemProperty -Path 'HKLM:\\SOFTWARE\\MyKey' -Name 'MyValue'\n");
    out.push_str("\n6. Restore from backup if something breaks:\n");
    out.push_str("   reg import C:\\backup\\MyKey_backup.reg\n");
    out.push_str("\nCommon registry hives:\n");
    out.push_str("  HKLM = HKEY_LOCAL_MACHINE  (machine-wide, requires Admin)\n");
    out.push_str("  HKCU = HKEY_CURRENT_USER   (current user, no elevation needed)\n");
    out.push_str("  HKCR = HKEY_CLASSES_ROOT    (file associations)\n");
    out.push_str("\nVerification:\n");
    out.push_str("  Get-ItemProperty -Path 'HKLM:\\SOFTWARE\\MyKey' | Select-Object MyValue\n");
    out.push_str("\nWhy this works:\nPowerShell's registry provider (HKLM:, HKCU:) is the safest scripted way to edit the registry — it validates paths and types, unlike raw reg.exe which accepts anything silently.");
    Ok(out.trim_end().to_string())
}

fn inspect_scheduled_task_fix_plan(issue: &str) -> Result<String, String> {
    let mut out = String::from("Host inspection: fix_plan\n\n");
    let _ = writeln!(out, "- Requested issue: {}", issue);
    out.push_str("- Fix-plan type: scheduled_task_create\n");
    out.push_str("\nFix plan — Creating a Scheduled Task (PowerShell, run as Administrator):\n");
    out.push_str("\nExample: Run a script at 9 AM every day\n");
    out.push_str("  $action  = New-ScheduledTaskAction -Execute 'powershell.exe' -Argument '-File C:\\Scripts\\MyScript.ps1'\n");
    out.push_str("  $trigger = New-ScheduledTaskTrigger -Daily -At '09:00AM'\n");
    out.push_str("  Register-ScheduledTask -TaskName 'MyDailyTask' -Action $action -Trigger $trigger -RunLevel Highest\n");
    out.push_str("\nExample: Run at Windows startup\n");
    out.push_str("  $trigger = New-ScheduledTaskTrigger -AtStartup\n");
    out.push_str("  Register-ScheduledTask -TaskName 'MyStartupTask' -Action $action -Trigger $trigger -RunLevel Highest\n");
    out.push_str("\nExample: Run at user logon\n");
    out.push_str("  $trigger = New-ScheduledTaskTrigger -AtLogon\n");
    out.push_str(
        "  Register-ScheduledTask -TaskName 'MyLogonTask' -Action $action -Trigger $trigger\n",
    );
    out.push_str("\nExample: Run every 30 minutes\n");
    out.push_str("  $trigger = New-ScheduledTaskTrigger -RepetitionInterval (New-TimeSpan -Minutes 30) -Once -At (Get-Date)\n");
    out.push_str("\nView all tasks:\n");
    out.push_str("  Get-ScheduledTask | Select-Object TaskName,State | Sort-Object TaskName\n");
    out.push_str("\nDelete a task:\n");
    out.push_str("  Unregister-ScheduledTask -TaskName 'MyDailyTask' -Confirm:$false\n");
    out.push_str("\nRun a task immediately:\n");
    out.push_str("  Start-ScheduledTask -TaskName 'MyDailyTask'\n");
    out.push_str("\nVerification:\n");
    out.push_str("  Get-ScheduledTask -TaskName 'MyDailyTask' | Select-Object TaskName,State,LastRunTime,NextRunTime\n");
    out.push_str("\nWhy this works:\nPowerShell's ScheduledTask cmdlets use the Task Scheduler COM interface — the same engine as the Task Scheduler GUI (taskschd.msc). Tasks persist in the Windows Task Scheduler database across reboots.");
    Ok(out.trim_end().to_string())
}

fn inspect_disk_cleanup_fix_plan(issue: &str) -> Result<String, String> {
    #[cfg(target_os = "windows")]
    let disk_info = {
        Command::new("powershell")
            .args([
                "-NoProfile",
                "-NonInteractive",
                "-Command",
                "Get-PSDrive -PSProvider FileSystem | Select-Object Name,@{N='Used_GB';E={[Math]::Round($_.Used/1GB,1)}},@{N='Free_GB';E={[Math]::Round($_.Free/1GB,1)}} | Where-Object { $_.Used_GB -gt 0 } | ForEach-Object { \"Drive $($_.Name): Used $($_.Used_GB) GB, Free $($_.Free_GB) GB\" }",
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default()
            .trim()
            .to_string()
    };
    #[cfg(not(target_os = "windows"))]
    let disk_info = String::new();

    let mut out = String::from("Host inspection: fix_plan\n\n");
    let _ = writeln!(out, "- Requested issue: {}", issue);
    out.push_str("- Fix-plan type: disk_cleanup\n");
    if !disk_info.is_empty() {
        let _ = write!(out, "\nCurrent drive usage:\n{}\n", disk_info);
    }
    out.push_str("\nFix plan — Reclaiming disk space (ordered by impact):\n");
    out.push_str("\n1. Run Windows Disk Cleanup (built-in, GUI):\n");
    out.push_str("   cleanmgr /sageset:1    (configure what to clean)\n");
    out.push_str("   cleanmgr /sagerun:1    (run the cleanup)\n");
    out.push_str("   Tick 'Windows Update Cleanup' for the biggest reclaim (often 5-20 GB).\n");
    out.push_str("\n2. Clear the Windows Update cache (PowerShell, Admin):\n");
    out.push_str("   Stop-Service wuauserv\n");
    out.push_str("   Remove-Item C:\\Windows\\SoftwareDistribution\\Download\\* -Recurse -Force\n");
    out.push_str("   Start-Service wuauserv\n");
    out.push_str("\n3. Clear Windows Temp folder:\n");
    out.push_str("   Remove-Item $env:TEMP\\* -Recurse -Force -ErrorAction SilentlyContinue\n");
    out.push_str(
        "   Remove-Item C:\\Windows\\Temp\\* -Recurse -Force -ErrorAction SilentlyContinue\n",
    );
    out.push_str("\n4. Developer cache directories (often the biggest culprits):\n");
    out.push_str("   - Rust build artifacts: cargo clean  (inside each project)\n");
    out.push_str("   - npm cache:  npm cache clean --force\n");
    out.push_str("   - pip cache:  pip cache purge\n");
    out.push_str(
        "   - Docker:     docker system prune -a  (removes all unused images/containers)\n",
    );
    out.push_str("   - Cargo registry cache: Remove-Item ~\\.cargo\\registry -Recurse -Force  (will redownload on next build)\n");
    out.push_str("\n5. Check for large files:\n");
    out.push_str("   Get-ChildItem C:\\ -Recurse -ErrorAction SilentlyContinue | Sort-Object Length -Descending | Select-Object -First 20 FullName,@{N='MB';E={[Math]::Round($_.Length/1MB,1)}}\n");
    out.push_str("\nVerification:\n");
    out.push_str(
        "  Get-PSDrive C | Select-Object @{N='Free_GB';E={[Math]::Round($_.Free/1GB,1)}}\n",
    );
    out.push_str("\nWhy this works:\nWindows accumulates update packages, temp files, and developer build artifacts over months. Targeting those specific locations gives the most space back with the least risk of breaking anything.");
    Ok(out.trim_end().to_string())
}

fn inspect_generic_fix_plan(issue: &str) -> Result<String, String> {
    let mut out = String::from("Host inspection: fix_plan\n\n");
    let _ = writeln!(out, "- Requested issue: {}", issue);
    out.push_str("- Fix-plan type: generic\n");
    out.push_str(
        "\nGuidance:\n- Use `fix_plan` with a descriptive issue string to get a grounded, machine-specific walkthrough.\n\
         Structured lanes available:\n\
         - PATH/toolchain drift (cargo, rustc, node, python, winget, choco, scoop)\n\
         - Port conflict (address already in use, what owns port)\n\
         - LM Studio connectivity (localhost:1234, no coding model loaded, embedding model)\n\
         - Driver install (GPU driver, nvidia driver, install driver, update driver)\n\
         - Group Policy (gpedit, local policy, administrative template)\n\
         - Firewall rule (inbound rule, outbound rule, open port, allow port, block port)\n\
         - SSH key (ssh-keygen, generate ssh, authorized_keys)\n\
         - WSL setup (wsl2, windows subsystem for linux, install ubuntu)\n\
         - Service config (start/stop/restart/enable/disable a service)\n\
         - Windows activation (product key, not activated, kms)\n\
         - Registry edit (regedit, reg add, hklm, hkcu, registry key)\n\
         - Scheduled task (task scheduler, schtasks, run on startup, cron)\n\
         - Disk cleanup (free up disk, clear cache, disk full, reclaim space)\n\
         - If your issue is outside these lanes, run the closest `inspect_host` topic first to ground the diagnosis.",
    );
    Ok(out.trim_end().to_string())
}

fn inspect_resource_load() -> Result<String, String> {
    #[cfg(target_os = "windows")]
    {
        let output = Command::new("powershell")
            .args([
                "-NoProfile",
                "-Command",
                "(Get-CimInstance Win32_Processor).LoadPercentage; Get-CimInstance Win32_OperatingSystem | Select-Object TotalVisibleMemorySize, FreePhysicalMemory | ConvertTo-Json -Compress",
            ])
            .output()
            .map_err(|e| format!("Failed to run powershell: {e}"))?;

        let text = String::from_utf8_lossy(&output.stdout);
        let mut lines = text.lines().map(str::trim).filter(|l| !l.is_empty());

        let cpu_load = lines
            .next()
            .and_then(|l| l.parse::<u32>().ok())
            .unwrap_or(0);
        let mem_json: String = lines.collect();
        let mem_val: Value = serde_json::from_str(&mem_json).unwrap_or(Value::Null);

        let total_kb = mem_val["TotalVisibleMemorySize"].as_u64().unwrap_or(1);
        let free_kb = mem_val["FreePhysicalMemory"].as_u64().unwrap_or(0);
        let used_kb = total_kb.saturating_sub(free_kb);
        let mem_percent = (used_kb * 100).checked_div(total_kb).unwrap_or(0);

        let mut out = String::from("Host inspection: resource_load\n\n");
        out.push_str("**System Performance Summary:**\n");
        let _ = writeln!(out, "- CPU Load: {}%", cpu_load);
        let _ = writeln!(
            out,
            "- Memory Usage: {} / {} ({}%)",
            human_bytes(used_kb * 1024),
            human_bytes(total_kb * 1024),
            mem_percent
        );

        if cpu_load > 85 {
            out.push_str("\n[Warning] CPU load is extremely high. System may be unresponsive.\n");
        }
        if mem_percent > 90 {
            out.push_str("\n[Warning] Memory usage is near capacity. Swap activity may slow down the machine.\n");
        }

        Ok(out)
    }
    #[cfg(not(target_os = "windows"))]
    {
        Ok("Resource load inspection is not yet implemented for this platform.".to_string())
    }
}

#[derive(Debug)]
enum EndpointProbe {
    Reachable(u16),
    Unreachable(String),
}

async fn probe_http_endpoint(url: &str) -> EndpointProbe {
    let client = match reqwest::Client::builder()
        .timeout(std::time::Duration::from_secs(3))
        .build()
    {
        Ok(client) => client,
        Err(err) => return EndpointProbe::Unreachable(err.to_string()),
    };

    match client.get(url).send().await {
        Ok(resp) => EndpointProbe::Reachable(resp.status().as_u16()),
        Err(err) => EndpointProbe::Unreachable(err.to_string()),
    }
}

async fn detect_loaded_embed_model(configured_api: &str) -> Option<String> {
    if configured_api.contains("11434") {
        let base = configured_api.trim_end_matches("/v1").trim_end_matches('/');
        let url = format!("{}/api/ps", base);
        let client = reqwest::Client::builder()
            .timeout(std::time::Duration::from_secs(3))
            .build()
            .ok()?;
        let response = client.get(url).send().await.ok()?;
        let body = response.json::<serde_json::Value>().await.ok()?;
        let entries = body["models"].as_array()?;
        for entry in entries {
            let name = entry["name"]
                .as_str()
                .or_else(|| entry["model"].as_str())
                .unwrap_or_default();
            let lower = name.to_ascii_lowercase();
            if lower.contains("embed")
                || lower.contains("embedding")
                || lower.contains("minilm")
                || lower.contains("bge")
                || lower.contains("e5")
            {
                return Some(name.to_string());
            }
        }
        return None;
    }

    let base = configured_api.trim_end_matches("/v1").trim_end_matches('/');
    let url = format!("{}/api/v0/models", base);
    let client = reqwest::Client::builder()
        .timeout(std::time::Duration::from_secs(3))
        .build()
        .ok()?;

    #[derive(serde::Deserialize)]
    struct ModelList {
        data: Vec<ModelEntry>,
    }
    #[derive(serde::Deserialize)]
    struct ModelEntry {
        id: String,
        #[serde(rename = "type", default)]
        model_type: String,
        #[serde(default)]
        state: String,
    }

    let response = client.get(url).send().await.ok()?;
    let models = response.json::<ModelList>().await.ok()?;
    models
        .data
        .into_iter()
        .find(|model| model.model_type == "embeddings" && model.state == "loaded")
        .map(|model| model.id)
}

fn first_port_in_text(text: &str) -> Option<u16> {
    text.split(|c: char| !c.is_ascii_digit())
        .find(|fragment| !fragment.is_empty())
        .and_then(|fragment| fragment.parse::<u16>().ok())
}

fn inspect_processes(name_filter: Option<String>, max_entries: usize) -> Result<String, String> {
    let mut processes = collect_processes()?;
    if let Some(filter) = name_filter.as_deref() {
        let lowered = filter.to_ascii_lowercase();
        processes.retain(|entry| entry.name.to_ascii_lowercase().contains(&lowered));
    }
    processes.sort_by(|a, b| {
        let a_cpu = a.cpu_percent.unwrap_or(0.0);
        let b_cpu = b.cpu_percent.unwrap_or(0.0);
        b_cpu
            .partial_cmp(&a_cpu)
            .unwrap_or(std::cmp::Ordering::Equal)
            .then_with(|| b.memory_bytes.cmp(&a.memory_bytes))
            .then_with(|| a.name.cmp(&b.name))
            .then_with(|| a.pid.cmp(&b.pid))
    });

    let total_memory: u64 = processes.iter().map(|entry| entry.memory_bytes).sum();

    let mut out = String::from("Host inspection: processes\n\n");
    if let Some(filter) = name_filter.as_deref() {
        let _ = writeln!(out, "- Filter name: {}", filter);
    }
    let _ = writeln!(out, "- Processes found: {}", processes.len());
    let _ = writeln!(
        out,
        "- Total reported working set: {}",
        human_bytes(total_memory)
    );

    if processes.is_empty() {
        out.push_str("\nNo running processes matched.");
        return Ok(out);
    }

    out.push_str("\nTop processes by resource usage:\n");
    for entry in processes.iter().take(max_entries) {
        let cpu_str = entry
            .cpu_percent
            .map(|p| format!(" [CPU: {:.1}%]", p))
            .or_else(|| entry.cpu_seconds.map(|s| format!(" [CPU: {:.1}s]", s)))
            .unwrap_or_default();
        let io_str = if let (Some(r), Some(w)) = (entry.read_ops, entry.write_ops) {
            format!(" [I/O R:{}/W:{}]", r, w)
        } else {
            " [I/O unknown]".to_string()
        };
        let _ = writeln!(
            out,
            "- {} (pid {}) - {}{}{}{}",
            entry.name,
            entry.pid,
            human_bytes(entry.memory_bytes),
            cpu_str,
            io_str,
            entry
                .detail
                .as_deref()
                .map(|detail| format!(" [{}]", detail))
                .unwrap_or_default()
        );
    }
    if processes.len() > max_entries {
        let _ = writeln!(
            out,
            "- ... {} more processes omitted",
            processes.len() - max_entries
        );
    }

    Ok(out.trim_end().to_string())
}

fn inspect_network(max_entries: usize) -> Result<String, String> {
    let adapters = collect_network_adapters()?;
    let active_count = adapters
        .iter()
        .filter(|adapter| adapter.is_active())
        .count();
    let exposure = listener_exposure_summary(collect_listening_ports().ok().unwrap_or_default());

    let mut out = String::from("Host inspection: network\n\n");
    let _ = writeln!(out, "- Adapters found: {}", adapters.len());
    let _ = writeln!(out, "- Active adapters: {}", active_count);
    let _ = writeln!(
        out,
        "- Listener exposure: {} loopback-only, {} wildcard/public, {} specific-bind",
        exposure.loopback_only, exposure.wildcard_public, exposure.specific_bind
    );

    if adapters.is_empty() {
        out.push_str("\nNo adapter details were detected.");
        return Ok(out);
    }

    out.push_str("\nAdapter summary:\n");
    for adapter in adapters.iter().take(max_entries) {
        let status = if adapter.is_active() {
            "active"
        } else if adapter.disconnected {
            "disconnected"
        } else {
            "idle"
        };
        let mut details = vec![status.to_string()];
        if !adapter.ipv4.is_empty() {
            details.push(format!("ipv4 {}", adapter.ipv4.join(", ")));
        }
        if !adapter.ipv6.is_empty() {
            details.push(format!("ipv6 {}", adapter.ipv6.join(", ")));
        }
        if !adapter.gateways.is_empty() {
            details.push(format!("gateway {}", adapter.gateways.join(", ")));
        }
        if !adapter.dns_servers.is_empty() {
            details.push(format!("dns {}", adapter.dns_servers.join(", ")));
        }
        let _ = writeln!(out, "- {} - {}", adapter.name, details.join(" | "));
    }
    if adapters.len() > max_entries {
        let _ = writeln!(
            out,
            "- ... {} more adapters omitted",
            adapters.len() - max_entries
        );
    }

    Ok(out.trim_end().to_string())
}

fn inspect_lan_discovery(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: lan_discovery\n\n");

    #[cfg(target_os = "windows")]
    {
        let n = max_entries.clamp(5, 20);
        let adapters = collect_network_adapters()?;
        let services = collect_services().unwrap_or_default();
        let active_adapters: Vec<&NetworkAdapter> = adapters
            .iter()
            .filter(|adapter| adapter.is_active())
            .collect();
        let gateways: Vec<String> = active_adapters
            .iter()
            .flat_map(|adapter| adapter.gateways.clone())
            .collect::<HashSet<_>>()
            .into_iter()
            .collect();

        let neighbor_script = r#"
$neighbors = Get-NetNeighbor -AddressFamily IPv4 -ErrorAction SilentlyContinue |
    Where-Object {
        $_.IPAddress -notlike '127.*' -and
        $_.IPAddress -notlike '169.254*' -and
        $_.State -notin @('Unreachable','Invalid')
    } |
    Select-Object IPAddress, LinkLayerAddress, State, InterfaceAlias
$neighbors | ConvertTo-Json -Compress
"#;
        let neighbor_text = Command::new("powershell")
            .args(["-NoProfile", "-NonInteractive", "-Command", neighbor_script])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        let neighbors: Vec<(String, String, String, String)> = parse_lan_neighbors(&neighbor_text)
            .into_iter()
            .take(n)
            .collect();

        let listener_script = r#"
Get-NetUDPEndpoint -ErrorAction SilentlyContinue |
    Where-Object { $_.LocalPort -in 137,138,1900,5353,5355 } |
    Select-Object LocalAddress, LocalPort, OwningProcess |
    ForEach-Object {
        $proc = (Get-Process -Id $_.OwningProcess -ErrorAction SilentlyContinue).Name
        "$($_.LocalAddress)|$($_.LocalPort)|$($_.OwningProcess)|$proc"
    }
"#;
        let listener_text = Command::new("powershell")
            .args(["-NoProfile", "-NonInteractive", "-Command", listener_script])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        let listeners: Vec<(String, u16, String, String)> = listener_text
            .lines()
            .filter_map(|line| {
                let mut it = line.trim().splitn(4, '|');
                let a = it.next()?.to_string();
                let b = it.next()?.parse::<u16>().ok()?;
                let c = it.next()?.to_string();
                let d = it.next()?.to_string();
                Some((a, b, c, d))
            })
            .take(n)
            .collect();

        let smb_mapping_script = r#"
Get-PSDrive -PSProvider FileSystem | Where-Object { $_.DisplayRoot } |
    ForEach-Object { "$($_.Name):|$($_.DisplayRoot)" }
"#;
        let smb_mappings: Vec<String> = Command::new("powershell")
            .args([
                "-NoProfile",
                "-NonInteractive",
                "-Command",
                smb_mapping_script,
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default()
            .lines()
            .take(n)
            .map(|line| line.trim().to_string())
            .filter(|line| !line.is_empty())
            .collect();

        let smb_connections_script = r#"
Get-SmbConnection -ErrorAction SilentlyContinue |
    Select-Object ServerName, ShareName, NumOpens |
    ForEach-Object { "$($_.ServerName)|$($_.ShareName)|$($_.NumOpens)" }
"#;
        let smb_connections: Vec<String> = Command::new("powershell")
            .args([
                "-NoProfile",
                "-NonInteractive",
                "-Command",
                smb_connections_script,
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default()
            .lines()
            .take(n)
            .map(|line| line.trim().to_string())
            .filter(|line| !line.is_empty())
            .collect();

        let discovery_service_names = [
            "FDResPub",
            "fdPHost",
            "SSDPSRV",
            "upnphost",
            "LanmanServer",
            "LanmanWorkstation",
            "lmhosts",
        ];
        let discovery_services: Vec<&ServiceEntry> = services
            .iter()
            .filter(|entry| {
                discovery_service_names
                    .iter()
                    .any(|name| entry.name.eq_ignore_ascii_case(name))
            })
            .collect();

        let mut findings = Vec::with_capacity(4);
        if active_adapters.is_empty() {
            findings.push(AuditFinding {
                finding: "No active LAN adapters were detected.".to_string(),
                impact: "Neighborhood, SMB, mDNS, SSDP, and printer/NAS discovery cannot work without an active local interface.".to_string(),
                fix: "Bring up Wi-Fi or Ethernet first, then rerun LAN discovery. If the adapter should be up already, inspect `network` or `connectivity` next.".to_string(),
            });
        }

        let stopped_discovery_services: Vec<&ServiceEntry> = discovery_services
            .iter()
            .copied()
            .filter(|entry| {
                !entry.status.eq_ignore_ascii_case("running")
                    && !entry.status.eq_ignore_ascii_case("active")
            })
            .collect();
        if !stopped_discovery_services.is_empty() {
            let names = {
                let mut s = String::new();
                for (i, entry) in stopped_discovery_services.iter().enumerate() {
                    if i > 0 {
                        s.push_str(", ");
                    }
                    s.push_str(&entry.name);
                }
                s
            };
            findings.push(AuditFinding {
                finding: format!("Discovery-related services are not running: {names}"),
                impact: "Windows network neighborhood visibility, SSDP/UPnP discovery, or SMB browse behavior can look broken even when the network itself is fine.".to_string(),
                fix: "Start the relevant services and set their startup type appropriately. `FDResPub` and `fdPHost` matter for neighborhood visibility; `SSDPSRV` and `upnphost` matter for UPnP.".to_string(),
            });
        }

        if listeners.is_empty() {
            findings.push(AuditFinding {
                finding: "No discovery-oriented UDP listeners were found on 137, 138, 1900, 5353, or 5355.".to_string(),
                impact: "NetBIOS, SSDP/UPnP, mDNS, and LLMNR discovery may be inactive on this host, so other devices may not see it automatically.".to_string(),
                fix: "If auto-discovery is expected, confirm the related services are running and check whether local firewall policy is suppressing these discovery ports.".to_string(),
            });
        }

        if !active_adapters.is_empty() && neighbors.len() <= gateways.len() {
            findings.push(AuditFinding {
                finding: "Very little neighborhood evidence was observed beyond the default gateway.".to_string(),
                impact: "That often means discovery traffic is quiet, the LAN is isolated, or peer devices are not advertising themselves.".to_string(),
                fix: "Check whether the target device is on the same subnet/VLAN, whether discovery is enabled on both sides, and whether the local firewall is allowing discovery protocols.".to_string(),
            });
        }

        out.push_str("=== Findings ===\n");
        if findings.is_empty() {
            out.push_str(
                "- Finding: LAN discovery signals look healthy from this inspection pass.\n",
            );
            out.push_str("  Impact: Neighborhood visibility, SMB browsing, and SSDP/mDNS discovery do not show an obvious host-side blocker.\n");
            out.push_str("  Fix: If one device still cannot be seen, test the specific host/share/printer path next to separate name resolution from service reachability.\n");
        } else {
            for finding in &findings {
                let _ = writeln!(out, "- Finding: {}", finding.finding);
                let _ = writeln!(out, "  Impact: {}", finding.impact);
                let _ = writeln!(out, "  Fix: {}", finding.fix);
            }
        }

        out.push_str("\n=== Active adapter and gateway summary ===\n");
        if active_adapters.is_empty() {
            out.push_str("- No active adapters detected.\n");
        } else {
            for adapter in active_adapters.iter().take(n) {
                let ipv4 = if adapter.ipv4.is_empty() {
                    "no IPv4".to_string()
                } else {
                    adapter.ipv4.join(", ")
                };
                let gateway = if adapter.gateways.is_empty() {
                    "no gateway".to_string()
                } else {
                    adapter.gateways.join(", ")
                };
                let _ = writeln!(
                    out,
                    "- {} | IPv4: {} | Gateway: {}",
                    adapter.name, ipv4, gateway
                );
            }
        }

        out.push_str("\n=== Neighborhood evidence ===\n");
        let _ = writeln!(out, "- Gateway count: {}", gateways.len());
        let _ = writeln!(out, "- Neighbor entries observed: {}", neighbors.len());
        if neighbors.is_empty() {
            out.push_str("- No ARP/neighbor evidence retrieved.\n");
        } else {
            for (ip, mac, state, iface) in neighbors.iter().take(n) {
                let _ = writeln!(
                    out,
                    "- {} on {} | MAC: {} | State: {}",
                    ip, iface, mac, state
                );
            }
        }

        out.push_str("\n=== Discovery services ===\n");
        if discovery_services.is_empty() {
            out.push_str("- Discovery service status unavailable.\n");
        } else {
            for entry in discovery_services.iter().take(n) {
                let startup = entry.startup.as_deref().unwrap_or("unknown");
                let _ = writeln!(
                    out,
                    "- {} | Status: {} | Startup: {}",
                    entry.name, entry.status, startup
                );
            }
        }

        out.push_str("\n=== Discovery listener surface ===\n");
        if listeners.is_empty() {
            out.push_str("- No discovery-oriented UDP listeners detected.\n");
        } else {
            for (addr, port, pid, proc_name) in listeners.iter().take(n) {
                let label = match *port {
                    137 => "NetBIOS Name Service",
                    138 => "NetBIOS Datagram",
                    1900 => "SSDP/UPnP",
                    5353 => "mDNS",
                    5355 => "LLMNR",
                    _ => "Discovery",
                };
                let proc_label = if proc_name.is_empty() {
                    "unknown".to_string()
                } else {
                    proc_name.clone()
                };
                let _ = writeln!(
                    out,
                    "- {}:{} | {} | PID {} ({})",
                    addr, port, label, pid, proc_label
                );
            }
        }

        out.push_str("\n=== SMB and neighborhood visibility ===\n");
        if smb_mappings.is_empty() && smb_connections.is_empty() {
            out.push_str("- No mapped SMB drives or active SMB connections detected.\n");
        } else {
            if !smb_mappings.is_empty() {
                out.push_str("- Mapped drives:\n");
                for mapping in smb_mappings.iter().take(n) {
                    let mut it = mapping.splitn(3, '|');
                    if let (Some(a), Some(b)) = (it.next(), it.next()) {
                        let _ = writeln!(out, "  - {} -> {}", a, b);
                    }
                }
            }
            if !smb_connections.is_empty() {
                out.push_str("- Active SMB connections:\n");
                for connection in smb_connections.iter().take(n) {
                    let mut it = connection.splitn(4, '|');
                    if let (Some(a), Some(b), Some(c)) = (it.next(), it.next(), it.next()) {
                        let _ = writeln!(out, "  - {}\\{} | Opens: {}", a, b, c);
                    }
                }
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let n = max_entries.clamp(5, 20);
        let adapters = collect_network_adapters()?;
        let arp_output = Command::new("ip")
            .args(["neigh"])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        let neighbors: Vec<&str> = arp_output
            .lines()
            .filter(|line| !line.trim().is_empty())
            .take(n)
            .collect();

        out.push_str("=== Findings ===\n");
        if adapters.iter().any(|adapter| adapter.is_active()) {
            out.push_str(
                "- Finding: LAN discovery support is partially available on this platform.\n",
            );
            out.push_str("  Impact: Adapter and neighbor evidence can be inspected, but mDNS/UPnP coverage depends on local tools and services like Avahi.\n");
            out.push_str("  Fix: If discovery is failing, inspect Avahi/systemd-resolved, local firewall rules, and `udp_ports` next.\n");
        } else {
            out.push_str("- Finding: No active LAN adapters were detected.\n");
            out.push_str(
                "  Impact: Neighborhood discovery cannot work without an active interface.\n",
            );
            out.push_str("  Fix: Bring up Wi-Fi or Ethernet first, then rerun LAN discovery.\n");
        }

        out.push_str("\n=== Active adapter and gateway summary ===\n");
        if adapters.is_empty() {
            out.push_str("- No adapters detected.\n");
        } else {
            for adapter in adapters.iter().take(n) {
                let ipv4 = if adapter.ipv4.is_empty() {
                    "no IPv4".to_string()
                } else {
                    adapter.ipv4.join(", ")
                };
                let gateway = if adapter.gateways.is_empty() {
                    "no gateway".to_string()
                } else {
                    adapter.gateways.join(", ")
                };
                let _ = write!(
                    out,
                    "- {} | IPv4: {} | Gateway: {}\n",
                    adapter.name, ipv4, gateway
                );
            }
        }

        out.push_str("\n=== Neighborhood evidence ===\n");
        if neighbors.is_empty() {
            out.push_str("- No neighbor entries detected.\n");
        } else {
            for line in neighbors {
                let _ = write!(out, "- {}\n", line.trim());
            }
        }
    }

    Ok(out.trim_end().to_string())
}

fn inspect_services(name_filter: Option<String>, max_entries: usize) -> Result<String, String> {
    let mut services = collect_services()?;
    if let Some(filter) = name_filter.as_deref() {
        let lowered = filter.to_ascii_lowercase();
        services.retain(|entry| {
            entry.name.to_ascii_lowercase().contains(&lowered)
                || entry
                    .display_name
                    .as_deref()
                    .map(|d| d.to_ascii_lowercase().contains(&lowered))
                    .unwrap_or(false)
        });
    }

    services.sort_by(|a, b| {
        let a_running =
            a.status.eq_ignore_ascii_case("running") || a.status.eq_ignore_ascii_case("active");
        let b_running =
            b.status.eq_ignore_ascii_case("running") || b.status.eq_ignore_ascii_case("active");
        b_running.cmp(&a_running).then_with(|| a.name.cmp(&b.name))
    });

    let running = services
        .iter()
        .filter(|entry| {
            entry.status.eq_ignore_ascii_case("running")
                || entry.status.eq_ignore_ascii_case("active")
        })
        .count();
    let failed = services
        .iter()
        .filter(|entry| {
            entry.status.eq_ignore_ascii_case("failed")
                || entry.status.eq_ignore_ascii_case("error")
                || entry.status.eq_ignore_ascii_case("stopped")
        })
        .count();

    let mut out = String::from("Host inspection: services\n\n");
    if let Some(filter) = name_filter.as_deref() {
        let _ = writeln!(out, "- Filter name: {}", filter);
    }
    let _ = writeln!(out, "- Services found: {}", services.len());
    let _ = writeln!(out, "- Running/active: {}", running);
    let _ = writeln!(out, "- Failed/stopped: {}", failed);

    if services.is_empty() {
        out.push_str("\nNo services matched.");
        return Ok(out);
    }

    // Split into running and stopped sections so both are always visible.
    let per_section = (max_entries / 2).max(5);

    let running_services: Vec<_> = services
        .iter()
        .filter(|e| {
            e.status.eq_ignore_ascii_case("running") || e.status.eq_ignore_ascii_case("active")
        })
        .collect();
    let stopped_services: Vec<_> = services
        .iter()
        .filter(|e| {
            e.status.eq_ignore_ascii_case("stopped")
                || e.status.eq_ignore_ascii_case("failed")
                || e.status.eq_ignore_ascii_case("error")
        })
        .collect();

    let fmt_entry = |entry: &&ServiceEntry| {
        let startup = entry
            .startup
            .as_deref()
            .map(|v| format!(" | startup {}", v))
            .unwrap_or_default();
        let logon = entry
            .start_name
            .as_deref()
            .map(|v| format!(" | LogOn: {}", v))
            .unwrap_or_default();
        let display = entry
            .display_name
            .as_deref()
            .filter(|v| *v != entry.name)
            .map(|v| format!(" [{}]", v))
            .unwrap_or_default();
        format!(
            "- {}{} - {}{}{}\n",
            entry.name, display, entry.status, startup, logon
        )
    };

    let _ = write!(
        out,
        "\nRunning services ({} total, showing up to {}):\n",
        running_services.len(),
        per_section
    );
    for entry in running_services.iter().take(per_section) {
        out.push_str(&fmt_entry(entry));
    }
    if running_services.len() > per_section {
        let _ = writeln!(
            out,
            "- ... {} more running services omitted",
            running_services.len() - per_section
        );
    }

    let _ = write!(
        out,
        "\nStopped/failed services ({} total, showing up to {}):\n",
        stopped_services.len(),
        per_section
    );
    for entry in stopped_services.iter().take(per_section) {
        out.push_str(&fmt_entry(entry));
    }
    if stopped_services.len() > per_section {
        let _ = writeln!(
            out,
            "- ... {} more stopped services omitted",
            stopped_services.len() - per_section
        );
    }

    Ok(out.trim_end().to_string())
}

async fn inspect_disk(path: PathBuf, max_entries: usize) -> Result<String, String> {
    inspect_directory("Disk", path, max_entries).await
}

fn inspect_ports(port_filter: Option<u16>, max_entries: usize) -> Result<String, String> {
    let mut listeners = collect_listening_ports()?;
    if let Some(port) = port_filter {
        listeners.retain(|entry| entry.port == port);
    }
    listeners.sort_by(|a, b| a.port.cmp(&b.port).then_with(|| a.local.cmp(&b.local)));

    let mut out = String::from("Host inspection: ports\n\n");
    if let Some(port) = port_filter {
        let _ = writeln!(out, "- Filter port: {}", port);
    }
    let _ = writeln!(out, "- Listening endpoints found: {}", listeners.len());

    if listeners.is_empty() {
        out.push_str("\nNo listening endpoints matched.");
        return Ok(out);
    }

    out.push_str("\nListening endpoints:\n");
    for entry in listeners.iter().take(max_entries) {
        let pid_str = entry
            .pid
            .as_deref()
            .map(|p| format!(" pid {}", p))
            .unwrap_or_default();
        let name_str = entry
            .process_name
            .as_deref()
            .map(|n| format!(" [{}]", n))
            .unwrap_or_default();
        let _ = writeln!(
            out,
            "- {} {} ({}){}{}",
            entry.protocol, entry.local, entry.state, pid_str, name_str
        );
    }
    if listeners.len() > max_entries {
        let _ = writeln!(
            out,
            "- ... {} more listening endpoints omitted",
            listeners.len() - max_entries
        );
    }

    Ok(out.trim_end().to_string())
}

fn inspect_repo_doctor(path: PathBuf, max_entries: usize) -> Result<String, String> {
    if !path.exists() {
        return Err(format!("Path does not exist: {}", path.display()));
    }
    if !path.is_dir() {
        return Err(format!("Path is not a directory: {}", path.display()));
    }

    let markers = collect_project_markers(&path);
    let hematite_state = collect_hematite_state(&path);
    let git_state = inspect_git_state(&path);
    let release_state = inspect_release_artifacts(&path);

    let mut out = String::from("Host inspection: repo_doctor\n\n");
    let _ = writeln!(out, "- Path: {}", path.display());
    let _ = writeln!(out, "- Workspace mode: {}", workspace_mode_for_path(&path));

    if markers.is_empty() {
        out.push_str("- Project markers: none of Cargo.toml, package.json, pyproject.toml, go.mod, justfile, Makefile, or .git were found at this path\n");
    } else {
        out.push_str("- Project markers:\n");
        for marker in markers.iter().take(max_entries) {
            let _ = writeln!(out, "  - {}", marker);
        }
    }

    match git_state {
        Some(git) => {
            let _ = writeln!(out, "- Git root: {}", git.root.display());
            let _ = writeln!(out, "- Git branch: {}", git.branch);
            let _ = writeln!(out, "- Git status: {}", git.status_label());
        }
        None => out.push_str("- Git: not inside a detected work tree\n"),
    }

    let _ = writeln!(
        out,
        "- Hematite docs/imports/reports: {}/{}/{}",
        hematite_state.docs_count, hematite_state.import_count, hematite_state.report_count
    );
    if hematite_state.workspace_profile {
        out.push_str("- Workspace profile: present\n");
    } else {
        out.push_str("- Workspace profile: absent\n");
    }

    if let Some(release) = release_state {
        let _ = writeln!(out, "- Cargo version: {}", release.version);
        let _ = writeln!(
            out,
            "- Windows artifacts for current version: {}/{}/{}",
            bool_label(release.portable_dir),
            bool_label(release.portable_zip),
            bool_label(release.setup_exe)
        );
    }

    Ok(out.trim_end().to_string())
}

async fn inspect_known_directory(
    label: &str,
    path: Option<PathBuf>,
    max_entries: usize,
) -> Result<String, String> {
    let path = path.ok_or_else(|| format!("{} location is unavailable on this host.", label))?;
    inspect_directory(label, path, max_entries).await
}

async fn inspect_directory(
    label: &str,
    path: PathBuf,
    max_entries: usize,
) -> Result<String, String> {
    let label = label.to_string();
    tokio::task::spawn_blocking(move || inspect_directory_sync(&label, &path, max_entries))
        .await
        .map_err(|e| format!("inspect_host task failed: {e}"))?
}

fn inspect_directory_sync(label: &str, path: &Path, max_entries: usize) -> Result<String, String> {
    if !path.exists() {
        return Err(format!("Path does not exist: {}", path.display()));
    }
    if !path.is_dir() {
        return Err(format!("Path is not a directory: {}", path.display()));
    }

    let mut top_level_entries = Vec::new();
    for entry in fs::read_dir(path)
        .map_err(|e| format!("Failed to read directory {}: {e}", path.display()))?
    {
        match entry {
            Ok(entry) => top_level_entries.push(entry),
            Err(_) => continue,
        }
    }
    top_level_entries.sort_by_key(|entry| entry.file_name());

    let top_level_count = top_level_entries.len();
    let mut sample_names = Vec::with_capacity(max_entries.min(top_level_count));
    let mut largest_entries = Vec::with_capacity(top_level_count);
    let mut aggregate = PathAggregate::default();
    let mut budget = DIRECTORY_SCAN_NODE_BUDGET;

    for entry in top_level_entries {
        let name = entry.file_name().to_string_lossy().to_string();
        if sample_names.len() < max_entries {
            sample_names.push(name.clone());
        }
        let kind = match entry.file_type() {
            Ok(ft) if ft.is_dir() => "dir",
            Ok(ft) if ft.is_symlink() => "symlink",
            _ => "file",
        };
        let stats = measure_path(&entry.path(), &mut budget);
        aggregate.merge(&stats);
        largest_entries.push(LargestEntry {
            name,
            kind,
            bytes: stats.total_bytes,
        });
    }

    largest_entries.sort_by(|a, b| b.bytes.cmp(&a.bytes).then_with(|| a.name.cmp(&b.name)));

    let mut out = format!("Directory inspection: {}\n\n", label);
    let _ = writeln!(out, "- Path: {}", path.display());
    let _ = writeln!(out, "- Top-level items: {}", top_level_count);
    let _ = writeln!(out, "- Recursive files: {}", aggregate.file_count);
    let _ = writeln!(out, "- Recursive directories: {}", aggregate.dir_count);
    let _ = writeln!(
        out,
        "- Total size: {}{}",
        human_bytes(aggregate.total_bytes),
        if aggregate.partial {
            " (partial scan)"
        } else {
            ""
        }
    );
    if aggregate.skipped_entries > 0 {
        let _ = writeln!(
            out,
            "- Skipped entries: {} (permissions, symlinks, or scan budget)",
            aggregate.skipped_entries
        );
    }

    if !largest_entries.is_empty() {
        out.push_str("\nLargest top-level entries:\n");
        for entry in largest_entries.iter().take(max_entries) {
            let _ = writeln!(
                out,
                "- {} [{}] - {}",
                entry.name,
                entry.kind,
                human_bytes(entry.bytes)
            );
        }
    }

    if !sample_names.is_empty() {
        out.push_str("\nSample names:\n");
        for name in sample_names {
            let _ = writeln!(out, "- {}", name);
        }
    }

    Ok(out.trim_end().to_string())
}

fn resolve_path(raw: &str) -> Result<PathBuf, String> {
    let trimmed = raw.trim();
    if trimmed.is_empty() {
        return Err("Path must not be empty.".to_string());
    }

    if let Some(rest) = trimmed
        .strip_prefix("~/")
        .or_else(|| trimmed.strip_prefix("~\\"))
    {
        let home = home::home_dir().ok_or_else(|| "Home directory is unavailable.".to_string())?;
        return Ok(home.join(rest));
    }

    let path = PathBuf::from(trimmed);
    if path.is_absolute() {
        Ok(path)
    } else {
        let cwd =
            std::env::current_dir().map_err(|e| format!("Failed to get current directory: {e}"))?;
        let full_path = cwd.join(&path);

        // Heuristic: If it's a relative path to .hematite or hematite.exe and doesn't exist here,
        // check the user's home directory.
        if !full_path.exists()
            && (trimmed.starts_with(".hematite") || trimmed.starts_with("hematite.exe"))
        {
            if let Some(home) = home::home_dir() {
                let home_path = home.join(trimmed);
                if home_path.exists() {
                    return Ok(home_path);
                }
            }
        }

        Ok(full_path)
    }
}

fn workspace_mode_label(workspace_root: &Path) -> &'static str {
    workspace_mode_for_path(workspace_root)
}

fn workspace_mode_for_path(path: &Path) -> &'static str {
    if is_project_marker_path(path) {
        "project"
    } else if path.join(".hematite").join("docs").exists()
        || path.join(".hematite").join("imports").exists()
        || path.join(".hematite").join("reports").exists()
    {
        "docs-only"
    } else {
        "general directory"
    }
}

fn is_project_marker_path(path: &Path) -> bool {
    [
        "Cargo.toml",
        "package.json",
        "pyproject.toml",
        "go.mod",
        "composer.json",
        "requirements.txt",
        "Makefile",
        "justfile",
    ]
    .iter()
    .any(|name| path.join(name).exists())
        || path.join(".git").exists()
}

fn preferred_shell_label() -> &'static str {
    #[cfg(target_os = "windows")]
    {
        "PowerShell"
    }
    #[cfg(not(target_os = "windows"))]
    {
        "sh"
    }
}

fn desktop_dir() -> Option<PathBuf> {
    home::home_dir().map(|home| home.join("Desktop"))
}

fn downloads_dir() -> Option<PathBuf> {
    home::home_dir().map(|home| home.join("Downloads"))
}

fn count_top_level_items(path: &Path) -> Result<usize, String> {
    let mut count = 0usize;
    for entry in
        fs::read_dir(path).map_err(|e| format!("Failed to read {}: {e}", path.display()))?
    {
        if entry.is_ok() {
            count += 1;
        }
    }
    Ok(count)
}

#[derive(Default)]
struct PathAggregate {
    total_bytes: u64,
    file_count: u64,
    dir_count: u64,
    skipped_entries: u64,
    partial: bool,
}

impl PathAggregate {
    fn merge(&mut self, other: &PathAggregate) {
        self.total_bytes += other.total_bytes;
        self.file_count += other.file_count;
        self.dir_count += other.dir_count;
        self.skipped_entries += other.skipped_entries;
        self.partial |= other.partial;
    }
}

struct LargestEntry {
    name: String,
    kind: &'static str,
    bytes: u64,
}

fn measure_path(path: &Path, budget: &mut usize) -> PathAggregate {
    if *budget == 0 {
        return PathAggregate {
            partial: true,
            skipped_entries: 1,
            ..PathAggregate::default()
        };
    }
    *budget -= 1;

    let metadata = match fs::symlink_metadata(path) {
        Ok(metadata) => metadata,
        Err(_) => {
            return PathAggregate {
                skipped_entries: 1,
                ..PathAggregate::default()
            }
        }
    };

    let file_type = metadata.file_type();
    if file_type.is_symlink() {
        return PathAggregate {
            skipped_entries: 1,
            ..PathAggregate::default()
        };
    }

    if metadata.is_file() {
        return PathAggregate {
            total_bytes: metadata.len(),
            file_count: 1,
            ..PathAggregate::default()
        };
    }

    if !metadata.is_dir() {
        return PathAggregate::default();
    }

    let mut aggregate = PathAggregate {
        dir_count: 1,
        ..PathAggregate::default()
    };

    let read_dir = match fs::read_dir(path) {
        Ok(read_dir) => read_dir,
        Err(_) => {
            aggregate.skipped_entries += 1;
            return aggregate;
        }
    };

    for child in read_dir {
        match child {
            Ok(child) => {
                let child_stats = measure_path(&child.path(), budget);
                aggregate.merge(&child_stats);
            }
            Err(_) => aggregate.skipped_entries += 1,
        }
    }

    aggregate
}

struct PathAnalysis {
    total_entries: usize,
    unique_entries: usize,
    entries: Vec<String>,
    duplicate_entries: Vec<String>,
    missing_entries: Vec<String>,
}

fn analyze_path_env() -> PathAnalysis {
    let mut entries = Vec::new();
    let mut duplicate_entries = Vec::new();
    let mut missing_entries = Vec::new();
    let mut seen = HashSet::new();

    let raw_path = std::env::var_os("PATH").unwrap_or_default();
    for path in std::env::split_paths(&raw_path) {
        let display = path.display().to_string();
        if display.trim().is_empty() {
            continue;
        }

        let normalized = normalize_path_entry(&display);
        if !seen.insert(normalized) {
            duplicate_entries.push(display.clone());
        }
        if !path.exists() {
            missing_entries.push(display.clone());
        }
        entries.push(display);
    }

    let total_entries = entries.len();
    let unique_entries = seen.len();

    PathAnalysis {
        total_entries,
        unique_entries,
        entries,
        duplicate_entries,
        missing_entries,
    }
}

fn normalize_path_entry(value: &str) -> String {
    #[cfg(target_os = "windows")]
    {
        value
            .replace('/', "\\")
            .trim_end_matches(['\\', '/'])
            .to_ascii_lowercase()
    }
    #[cfg(not(target_os = "windows"))]
    {
        value.trim_end_matches('/').to_string()
    }
}

struct ToolchainReport {
    found: Vec<(String, String)>,
    missing: Vec<String>,
}

struct PackageManagerReport {
    found: Vec<(String, String)>,
}

#[derive(Debug, Clone)]
struct ProcessEntry {
    name: String,
    pid: u32,
    memory_bytes: u64,
    cpu_seconds: Option<f64>,
    cpu_percent: Option<f64>,
    read_ops: Option<u64>,
    write_ops: Option<u64>,
    detail: Option<String>,
}

#[derive(Debug, Clone)]
struct ServiceEntry {
    name: String,
    status: String,
    startup: Option<String>,
    display_name: Option<String>,
    start_name: Option<String>,
}

#[derive(Debug, Clone, Default)]
struct NetworkAdapter {
    name: String,
    ipv4: Vec<String>,
    ipv6: Vec<String>,
    gateways: Vec<String>,
    dns_servers: Vec<String>,
    disconnected: bool,
}

impl NetworkAdapter {
    fn is_active(&self) -> bool {
        !self.disconnected
            && (!self.ipv4.is_empty() || !self.ipv6.is_empty() || !self.gateways.is_empty())
    }
}

#[derive(Debug, Clone, Copy, Default)]
struct ListenerExposureSummary {
    loopback_only: usize,
    wildcard_public: usize,
    specific_bind: usize,
}

#[derive(Debug, Clone)]
struct ListeningPort {
    protocol: String,
    local: String,
    port: u16,
    state: String,
    pid: Option<String>,
    process_name: Option<String>,
}

fn collect_listening_ports() -> Result<Vec<ListeningPort>, String> {
    #[cfg(target_os = "windows")]
    {
        collect_windows_listening_ports()
    }
    #[cfg(not(target_os = "windows"))]
    {
        collect_unix_listening_ports()
    }
}

fn collect_network_adapters() -> Result<Vec<NetworkAdapter>, String> {
    #[cfg(target_os = "windows")]
    {
        collect_windows_network_adapters()
    }
    #[cfg(not(target_os = "windows"))]
    {
        collect_unix_network_adapters()
    }
}

fn collect_services() -> Result<Vec<ServiceEntry>, String> {
    #[cfg(target_os = "windows")]
    {
        collect_windows_services()
    }
    #[cfg(not(target_os = "windows"))]
    {
        collect_unix_services()
    }
}

#[cfg(target_os = "windows")]
fn collect_windows_listening_ports() -> Result<Vec<ListeningPort>, String> {
    let output = Command::new("netstat")
        .args(["-ano", "-p", "tcp"])
        .output()
        .map_err(|e| format!("Failed to run netstat: {e}"))?;
    if !output.status.success() {
        return Err("netstat returned a non-success status.".to_string());
    }

    let text = String::from_utf8_lossy(&output.stdout);
    let mut listeners = Vec::new();
    for line in text.lines() {
        let trimmed = line.trim();
        if !trimmed.starts_with("TCP") {
            continue;
        }
        let mut it = trimmed.split_whitespace();
        if let (Some(proto), Some(local), Some(_), Some(state), Some(pid)) =
            (it.next(), it.next(), it.next(), it.next(), it.next())
        {
            if state != "LISTENING" {
                continue;
            }
            let Some(port) = extract_port_from_socket(local) else {
                continue;
            };
            listeners.push(ListeningPort {
                protocol: proto.to_string(),
                local: local.to_string(),
                port,
                state: state.to_string(),
                pid: Some(pid.to_string()),
                process_name: None,
            });
        }
    }

    // Enrich with process names via PowerShell — works without elevation for
    // most user-space processes. System processes (PID 4, etc.) stay unnamed.
    let unique_pids: Vec<String> = listeners
        .iter()
        .filter_map(|l| l.pid.clone())
        .collect::<HashSet<_>>()
        .into_iter()
        .collect();

    if !unique_pids.is_empty() {
        let pid_list = unique_pids.join(",");
        let ps_cmd = format!(
            "Get-Process -Id {} -ErrorAction SilentlyContinue | Select-Object Id,Name | Format-Table -HideTableHeaders",
            pid_list
        );
        if let Ok(ps_out) = Command::new("powershell")
            .args(["-NoProfile", "-NonInteractive", "-Command", &ps_cmd])
            .output()
        {
            let mut pid_map = std::collections::HashMap::<String, String>::new();
            let ps_text = String::from_utf8_lossy(&ps_out.stdout);
            for line in ps_text.lines() {
                let mut it = line.split_whitespace();
                if let (Some(a), Some(b)) = (it.next(), it.next()) {
                    pid_map.insert(a.to_string(), b.to_string());
                }
            }
            for listener in &mut listeners {
                if let Some(pid) = &listener.pid {
                    listener.process_name = pid_map.get(pid).cloned();
                }
            }
        }
    }

    Ok(listeners)
}

#[cfg(not(target_os = "windows"))]
fn collect_unix_listening_ports() -> Result<Vec<ListeningPort>, String> {
    let output = Command::new("ss")
        .args(["-ltn"])
        .output()
        .map_err(|e| format!("Failed to run ss: {e}"))?;
    if !output.status.success() {
        return Err("ss returned a non-success status.".to_string());
    }

    let text = String::from_utf8_lossy(&output.stdout);
    let mut listeners = Vec::new();
    for line in text.lines().skip(1) {
        let mut it = line.split_whitespace();
        if let (Some(state), Some(_), Some(_), Some(local)) =
            (it.next(), it.next(), it.next(), it.next())
        {
            let Some(port) = extract_port_from_socket(local) else {
                continue;
            };
            listeners.push(ListeningPort {
                protocol: "tcp".to_string(),
                local: local.to_string(),
                port,
                state: state.to_string(),
                pid: None,
                process_name: None,
            });
        }
    }

    Ok(listeners)
}

fn collect_processes() -> Result<Vec<ProcessEntry>, String> {
    #[cfg(target_os = "windows")]
    {
        collect_windows_processes()
    }
    #[cfg(not(target_os = "windows"))]
    {
        collect_unix_processes()
    }
}

#[cfg(target_os = "windows")]
fn collect_windows_services() -> Result<Vec<ServiceEntry>, String> {
    let command = "Get-CimInstance Win32_Service | Select-Object Name,State,StartMode,DisplayName,StartName | ConvertTo-Json -Compress";
    let output = Command::new("powershell")
        .args(["-NoProfile", "-Command", command])
        .output()
        .map_err(|e| format!("Failed to run PowerShell service inspection: {e}"))?;
    if !output.status.success() {
        return Err("PowerShell service inspection returned a non-success status.".to_string());
    }

    parse_windows_services_json(&String::from_utf8_lossy(&output.stdout))
}

#[cfg(not(target_os = "windows"))]
fn collect_unix_services() -> Result<Vec<ServiceEntry>, String> {
    let status_output = Command::new("systemctl")
        .args([
            "list-units",
            "--type=service",
            "--all",
            "--no-pager",
            "--no-legend",
            "--plain",
        ])
        .output()
        .map_err(|e| format!("Failed to run systemctl list-units: {e}"))?;
    if !status_output.status.success() {
        return Err("systemctl list-units returned a non-success status.".to_string());
    }

    let startup_output = Command::new("systemctl")
        .args([
            "list-unit-files",
            "--type=service",
            "--no-legend",
            "--no-pager",
            "--plain",
        ])
        .output()
        .map_err(|e| format!("Failed to run systemctl list-unit-files: {e}"))?;
    if !startup_output.status.success() {
        return Err("systemctl list-unit-files returned a non-success status.".to_string());
    }

    Ok(parse_unix_services(
        &String::from_utf8_lossy(&status_output.stdout),
        &String::from_utf8_lossy(&startup_output.stdout),
    ))
}

#[cfg(target_os = "windows")]
fn collect_windows_network_adapters() -> Result<Vec<NetworkAdapter>, String> {
    let output = Command::new("ipconfig")
        .args(["/all"])
        .output()
        .map_err(|e| format!("Failed to run ipconfig: {e}"))?;
    if !output.status.success() {
        return Err("ipconfig returned a non-success status.".to_string());
    }

    Ok(parse_windows_ipconfig_all(&String::from_utf8_lossy(
        &output.stdout,
    )))
}

#[cfg(not(target_os = "windows"))]
fn collect_unix_network_adapters() -> Result<Vec<NetworkAdapter>, String> {
    let addr_output = Command::new("ip")
        .args(["-o", "addr", "show", "up"])
        .output()
        .map_err(|e| format!("Failed to run ip addr: {e}"))?;
    if !addr_output.status.success() {
        return Err("ip addr returned a non-success status.".to_string());
    }

    let route_output = Command::new("ip")
        .args(["route", "show", "default"])
        .output()
        .map_err(|e| format!("Failed to run ip route: {e}"))?;
    if !route_output.status.success() {
        return Err("ip route returned a non-success status.".to_string());
    }

    let mut adapters = parse_unix_ip_addr(&String::from_utf8_lossy(&addr_output.stdout));
    apply_unix_default_routes(
        &mut adapters,
        &String::from_utf8_lossy(&route_output.stdout),
    );
    apply_unix_dns_servers(&mut adapters);
    Ok(adapters)
}

#[cfg(target_os = "windows")]
fn collect_windows_processes() -> Result<Vec<ProcessEntry>, String> {
    // We take two samples of CPU time separated by a short interval to calculate recent CPU %
    let script = r#"
        $s1 = Get-Process | Select-Object Id, CPU
        Start-Sleep -Milliseconds 250
        $s2 = Get-Process | Select-Object Name, Id, WorkingSet64, CPU, ReadOperationCount, WriteOperationCount
        $s2 | ForEach-Object {
            $p2 = $_
            $p1 = $s1 | Where-Object { $_.Id -eq $p2.Id }
            $pct = 0.0
            if ($p1 -and $p2.CPU -gt $p1.CPU) {
                # (Delta CPU seconds / interval) * 100 / LogicalProcessors
                # Note: We skip division by logical processors to show 'per-core' usage or just raw % if preferred.
                # Standard Task Manager style is (delta / interval) * 100.
                $pct = [math]::Round((($p2.CPU - $p1.CPU) / 0.25) * 100, 1)
            }
            "PID:$($p2.Id)|NAME:$($p2.Name)|MEM:$($p2.WorkingSet64)|CPU_S:$($p2.CPU)|CPU_P:$pct|READ:$($p2.ReadOperationCount)|WRITE:$($p2.WriteOperationCount)"
        }
    "#;

    let output = Command::new("powershell")
        .args(["-NoProfile", "-Command", script])
        .output()
        .map_err(|e| format!("Failed to run powershell Get-Process: {e}"))?;

    let text = String::from_utf8_lossy(&output.stdout);
    let mut out = Vec::new();
    let mut parts: Vec<&str> = Vec::with_capacity(8);
    for line in text.lines() {
        parts.clear();
        parts.extend(line.trim().split('|'));
        if parts.len() < 5 {
            continue;
        }
        let mut entry = ProcessEntry {
            name: "unknown".to_string(),
            pid: 0,
            memory_bytes: 0,
            cpu_seconds: None,
            cpu_percent: None,
            read_ops: None,
            write_ops: None,
            detail: None,
        };
        for p in &parts {
            if let Some((k, v)) = p.split_once(':') {
                match k {
                    "PID" => entry.pid = v.parse().unwrap_or(0),
                    "NAME" => entry.name = v.to_string(),
                    "MEM" => entry.memory_bytes = v.parse().unwrap_or(0),
                    "CPU_S" => entry.cpu_seconds = v.parse().ok(),
                    "CPU_P" => entry.cpu_percent = v.parse().ok(),
                    "READ" => entry.read_ops = v.parse().ok(),
                    "WRITE" => entry.write_ops = v.parse().ok(),
                    _ => {}
                }
            }
        }
        out.push(entry);
    }
    Ok(out)
}

#[cfg(not(target_os = "windows"))]
fn collect_unix_processes() -> Result<Vec<ProcessEntry>, String> {
    let output = Command::new("ps")
        .args(["-eo", "pid=,rss=,comm="])
        .output()
        .map_err(|e| format!("Failed to run ps: {e}"))?;
    if !output.status.success() {
        return Err("ps returned a non-success status.".to_string());
    }

    let text = String::from_utf8_lossy(&output.stdout);
    let mut processes = Vec::new();
    for line in text.lines() {
        let mut it = line.split_whitespace();
        let Some(pid_str) = it.next() else {
            continue;
        };
        let Some(rss_str) = it.next() else {
            continue;
        };
        let Some(first_word) = it.next() else {
            continue;
        };
        let Ok(pid) = pid_str.parse::<u32>() else {
            continue;
        };
        let Ok(rss_kib) = rss_str.parse::<u64>() else {
            continue;
        };
        let mut name = first_word.to_string();
        for w in it {
            name.push(' ');
            name.push_str(w);
        }
        processes.push(ProcessEntry {
            name,
            pid,
            memory_bytes: rss_kib * 1024,
            cpu_seconds: None,
            cpu_percent: None,
            read_ops: None,
            write_ops: None,
            detail: None,
        });
    }

    Ok(processes)
}

fn extract_port_from_socket(value: &str) -> Option<u16> {
    let cleaned = value.trim().trim_matches(['[', ']']);
    let port_str = cleaned.rsplit(':').next()?;
    port_str.parse::<u16>().ok()
}

fn listener_exposure_summary(listeners: Vec<ListeningPort>) -> ListenerExposureSummary {
    let mut summary = ListenerExposureSummary::default();
    for entry in listeners {
        let local = entry.local.to_ascii_lowercase();
        if is_loopback_listener(&local) {
            summary.loopback_only += 1;
        } else if is_wildcard_listener(&local) {
            summary.wildcard_public += 1;
        } else {
            summary.specific_bind += 1;
        }
    }
    summary
}

fn is_loopback_listener(local: &str) -> bool {
    local.starts_with("127.")
        || local.starts_with("[::1]")
        || local.starts_with("::1")
        || local.starts_with("localhost:")
}

fn is_wildcard_listener(local: &str) -> bool {
    local.starts_with("0.0.0.0:")
        || local.starts_with("[::]:")
        || local.starts_with(":::")
        || local == "*:*"
}

struct GitState {
    root: PathBuf,
    branch: String,
    dirty_entries: usize,
}

impl GitState {
    fn status_label(&self) -> String {
        if self.dirty_entries == 0 {
            "clean".to_string()
        } else {
            format!("dirty ({} changed path(s))", self.dirty_entries)
        }
    }
}

fn inspect_git_state(path: &Path) -> Option<GitState> {
    let root = capture_first_line(
        "git",
        &["-C", path.to_str()?, "rev-parse", "--show-toplevel"],
    )?;
    let branch = capture_first_line("git", &["-C", path.to_str()?, "branch", "--show-current"])
        .unwrap_or_else(|| "detached".to_string());
    let output = Command::new("git")
        .args(["-C", path.to_str()?, "status", "--short"])
        .output()
        .ok()?;
    if !output.status.success() {
        return None;
    }
    let dirty_entries = String::from_utf8_lossy(&output.stdout).lines().count();
    Some(GitState {
        root: PathBuf::from(root),
        branch,
        dirty_entries,
    })
}

struct HematiteState {
    docs_count: usize,
    import_count: usize,
    report_count: usize,
    workspace_profile: bool,
}

fn collect_hematite_state(path: &Path) -> HematiteState {
    let root = path.join(".hematite");
    HematiteState {
        docs_count: count_entries_if_exists(&root.join("docs")),
        import_count: count_entries_if_exists(&root.join("imports")),
        report_count: count_entries_if_exists(&root.join("reports")),
        workspace_profile: root.join("workspace_profile.json").exists(),
    }
}

fn count_entries_if_exists(path: &Path) -> usize {
    if !path.exists() || !path.is_dir() {
        return 0;
    }
    fs::read_dir(path)
        .ok()
        .map(|iter| iter.filter(|entry| entry.is_ok()).count())
        .unwrap_or(0)
}

fn collect_project_markers(path: &Path) -> Vec<String> {
    [
        "Cargo.toml",
        "package.json",
        "pyproject.toml",
        "go.mod",
        "justfile",
        "Makefile",
        ".git",
    ]
    .iter()
    .filter(|&name| path.join(name).exists())
    .map(|name| (*name).to_string())
    .collect()
}

struct ReleaseArtifactState {
    version: String,
    portable_dir: bool,
    portable_zip: bool,
    setup_exe: bool,
}

fn inspect_release_artifacts(path: &Path) -> Option<ReleaseArtifactState> {
    let cargo_toml = path.join("Cargo.toml");
    if !cargo_toml.exists() {
        return None;
    }
    let cargo_text = fs::read_to_string(cargo_toml).ok()?;
    let version = [regex_line_capture(
        &cargo_text,
        r#"(?m)^version\s*=\s*"([^"]+)""#,
    )?]
    .concat();
    let dist_windows = path.join("dist").join("windows");
    let prefix = format!("Hematite-{}", version);
    Some(ReleaseArtifactState {
        version,
        portable_dir: dist_windows.join(format!("{}-portable", prefix)).exists(),
        portable_zip: dist_windows
            .join(format!("{}-portable.zip", prefix))
            .exists(),
        setup_exe: dist_windows.join(format!("{}-Setup.exe", prefix)).exists(),
    })
}

fn regex_line_capture(text: &str, pattern: &str) -> Option<String> {
    let regex = regex::Regex::new(pattern).ok()?;
    let captures = regex.captures(text)?;
    captures.get(1).map(|m| m.as_str().to_string())
}

fn bool_label(value: bool) -> &'static str {
    if value {
        "yes"
    } else {
        "no"
    }
}

fn collect_toolchains() -> ToolchainReport {
    let config = crate::agent::config::load_config();
    let mut python_probes = Vec::with_capacity(5);
    if let Some(ref path) = config.python_path {
        python_probes.push(CommandProbe::new(path, &["--version"]));
    };

    python_probes.extend([
        CommandProbe::new("python3", &["--version"]),
        CommandProbe::new("python", &["--version"]),
        CommandProbe::new("py", &["-3", "--version"]),
        CommandProbe::new("py", &["--version"]),
    ]);

    let checks = [
        ToolCheck::new("git", &[CommandProbe::new("git", &["--version"])]),
        ToolCheck::new("rustc", &[CommandProbe::new("rustc", &["--version"])]),
        ToolCheck::new("cargo", &[CommandProbe::new("cargo", &["--version"])]),
        ToolCheck::new("node", &[CommandProbe::new("node", &["--version"])]),
        ToolCheck::new(
            "npm",
            &[
                CommandProbe::new("npm", &["--version"]),
                CommandProbe::new("npm.cmd", &["--version"]),
            ],
        ),
        ToolCheck::new(
            "pnpm",
            &[
                CommandProbe::new("pnpm", &["--version"]),
                CommandProbe::new("pnpm.cmd", &["--version"]),
            ],
        ),
        ToolCheck::new("python", &python_probes),
        ToolCheck::new("deno", &[CommandProbe::new("deno", &["--version"])]),
        ToolCheck::new("go", &[CommandProbe::new("go", &["version"])]),
        ToolCheck::new("dotnet", &[CommandProbe::new("dotnet", &["--version"])]),
        ToolCheck::new("uv", &[CommandProbe::new("uv", &["--version"])]),
    ];

    let mut found = Vec::with_capacity(checks.len());
    let mut missing = Vec::with_capacity(checks.len());

    for check in checks {
        match check.detect() {
            Some(version) => found.push((check.label.to_string(), version)),
            None => missing.push(check.label.to_string()),
        }
    }

    ToolchainReport { found, missing }
}

fn collect_package_managers() -> PackageManagerReport {
    let config = crate::agent::config::load_config();
    let mut pip_probes = Vec::with_capacity(6);
    if let Some(ref path) = config.python_path {
        pip_probes.push(CommandProbe::new(path, &["-m", "pip", "--version"]));
    }
    pip_probes.extend([
        CommandProbe::new("python3", &["-m", "pip", "--version"]),
        CommandProbe::new("python", &["-m", "pip", "--version"]),
        CommandProbe::new("py", &["-3", "-m", "pip", "--version"]),
        CommandProbe::new("py", &["-m", "pip", "--version"]),
        CommandProbe::new("pip", &["--version"]),
    ]);

    let checks = [
        ToolCheck::new("cargo", &[CommandProbe::new("cargo", &["--version"])]),
        ToolCheck::new(
            "npm",
            &[
                CommandProbe::new("npm", &["--version"]),
                CommandProbe::new("npm.cmd", &["--version"]),
            ],
        ),
        ToolCheck::new(
            "pnpm",
            &[
                CommandProbe::new("pnpm", &["--version"]),
                CommandProbe::new("pnpm.cmd", &["--version"]),
            ],
        ),
        ToolCheck::new("pip", &pip_probes),
        ToolCheck::new("pipx", &[CommandProbe::new("pipx", &["--version"])]),
        ToolCheck::new("uv", &[CommandProbe::new("uv", &["--version"])]),
        ToolCheck::new("winget", &[CommandProbe::new("winget", &["--version"])]),
        ToolCheck::new(
            "choco",
            &[
                CommandProbe::new("choco", &["--version"]),
                CommandProbe::new("choco.exe", &["--version"]),
            ],
        ),
        ToolCheck::new("scoop", &[CommandProbe::new("scoop", &["--version"])]),
    ];

    let mut found = Vec::with_capacity(checks.len());
    for check in checks {
        if let Some(version) = check.detect() {
            found.push((check.label.to_string(), version))
        }
    }

    PackageManagerReport { found }
}

#[derive(Clone)]
struct ToolCheck {
    label: &'static str,
    probes: Vec<CommandProbe>,
}

impl ToolCheck {
    fn new(label: &'static str, probes: &[CommandProbe]) -> Self {
        Self {
            label,
            probes: probes.to_vec(),
        }
    }

    fn detect(&self) -> Option<String> {
        for probe in &self.probes {
            if let Some(output) = capture_first_line(&probe.program, &probe.args) {
                return Some(output);
            }
        }
        None
    }
}

#[derive(Clone)]
struct CommandProbe {
    program: String,
    args: Vec<String>,
}

impl CommandProbe {
    fn new(program: &str, args: &[&str]) -> Self {
        Self {
            program: program.to_string(),
            args: args.iter().map(|s| s.to_string()).collect(),
        }
    }
}

fn build_env_doctor_findings(
    toolchains: &ToolchainReport,
    package_managers: &PackageManagerReport,
    path_stats: &PathAnalysis,
) -> Vec<String> {
    let found_tools = toolchains
        .found
        .iter()
        .map(|(label, _)| label.as_str())
        .collect::<HashSet<_>>();
    let found_managers = package_managers
        .found
        .iter()
        .map(|(label, _)| label.as_str())
        .collect::<HashSet<_>>();

    let mut findings = Vec::with_capacity(4);

    if !path_stats.duplicate_entries.is_empty() {
        findings.push(format!(
            "PATH contains {} duplicate entries. That is usually harmless but worth cleaning up.",
            path_stats.duplicate_entries.len()
        ));
    }
    if !path_stats.missing_entries.is_empty() {
        findings.push(format!(
            "PATH contains {} entries that do not exist on disk.",
            path_stats.missing_entries.len()
        ));
    }
    if found_tools.contains("rustc") && !found_managers.contains("cargo") {
        findings.push(
            "Rust is present but Cargo was not detected. That is an incomplete Rust toolchain."
                .to_string(),
        );
    }
    if found_tools.contains("node")
        && !found_managers.contains("npm")
        && !found_managers.contains("pnpm")
    {
        findings.push(
            "Node is present but no JavaScript package manager was detected (npm or pnpm)."
                .to_string(),
        );
    }
    if found_tools.contains("python")
        && !found_managers.contains("pip")
        && !found_managers.contains("uv")
        && !found_managers.contains("pipx")
    {
        findings.push(
            "Python is present but no Python package manager was detected (pip, uv, or pipx)."
                .to_string(),
        );
    }
    let windows_manager_count = ["winget", "choco", "scoop"]
        .iter()
        .filter(|label| found_managers.contains(**label))
        .count();
    if windows_manager_count > 1 {
        findings.push(
            "Multiple Windows package managers are installed. That is workable, but it can create overlap in update paths."
                .to_string(),
        );
    }
    if findings.is_empty() && !found_managers.is_empty() {
        findings.push(
            "Core package-manager coverage looks healthy for a normal developer workstation."
                .to_string(),
        );
    }

    findings
}

fn capture_first_line<S: AsRef<str>>(program: &str, args: &[S]) -> Option<String> {
    let output = std::process::Command::new(program)
        .args(args.iter().map(|s| s.as_ref()))
        .output()
        .ok()?;
    if !output.status.success() {
        return None;
    }

    let stdout = if output.stdout.is_empty() {
        String::from_utf8_lossy(&output.stderr).into_owned()
    } else {
        String::from_utf8_lossy(&output.stdout).into_owned()
    };

    stdout
        .lines()
        .map(str::trim)
        .find(|line| !line.is_empty())
        .map(|line| line.to_string())
}

fn human_bytes(bytes: u64) -> String {
    const UNITS: [&str; 5] = ["B", "KB", "MB", "GB", "TB"];
    let mut value = bytes as f64;
    let mut unit_index = 0usize;

    while value >= 1024.0 && unit_index < UNITS.len() - 1 {
        value /= 1024.0;
        unit_index += 1;
    }

    if unit_index == 0 {
        format!("{} {}", bytes, UNITS[unit_index])
    } else {
        format!("{value:.1} {}", UNITS[unit_index])
    }
}

#[cfg(target_os = "windows")]
fn parse_windows_ipconfig_all(text: &str) -> Vec<NetworkAdapter> {
    let mut adapters = Vec::new();
    let mut current: Option<NetworkAdapter> = None;
    let mut pending_dns = false;

    for raw_line in text.lines() {
        let line = raw_line.trim_end();
        let trimmed = line.trim();
        if trimmed.is_empty() {
            pending_dns = false;
            continue;
        }

        if !line.starts_with(' ') && trimmed.ends_with(':') && trimmed.contains("adapter") {
            if let Some(adapter) = current.take() {
                adapters.push(adapter);
            }
            current = Some(NetworkAdapter {
                name: trimmed.trim_end_matches(':').to_string(),
                ..NetworkAdapter::default()
            });
            pending_dns = false;
            continue;
        }

        let Some(adapter) = current.as_mut() else {
            continue;
        };

        if trimmed.contains("Media State") && trimmed.contains("disconnected") {
            adapter.disconnected = true;
        }

        if let Some(value) = value_after_colon(trimmed) {
            let normalized = normalize_ipconfig_value(value);
            if trimmed.starts_with("IPv4 Address") && !normalized.is_empty() {
                adapter.ipv4.push(normalized);
                pending_dns = false;
            } else if trimmed.starts_with("IPv6 Address")
                || trimmed.starts_with("Temporary IPv6 Address")
                || trimmed.starts_with("Link-local IPv6 Address")
            {
                if !normalized.is_empty() {
                    adapter.ipv6.push(normalized);
                }
                pending_dns = false;
            } else if trimmed.starts_with("Default Gateway") {
                if !normalized.is_empty() {
                    adapter.gateways.push(normalized);
                }
                pending_dns = false;
            } else if trimmed.starts_with("DNS Servers") {
                if !normalized.is_empty() {
                    adapter.dns_servers.push(normalized);
                }
                pending_dns = true;
            } else {
                pending_dns = false;
            }
        } else if pending_dns {
            let normalized = normalize_ipconfig_value(trimmed);
            if !normalized.is_empty() {
                adapter.dns_servers.push(normalized);
            }
        }
    }

    if let Some(adapter) = current.take() {
        adapters.push(adapter);
    }

    for adapter in &mut adapters {
        dedup_vec(&mut adapter.ipv4);
        dedup_vec(&mut adapter.ipv6);
        dedup_vec(&mut adapter.gateways);
        dedup_vec(&mut adapter.dns_servers);
    }

    adapters
}

#[cfg(not(target_os = "windows"))]
fn parse_unix_ip_addr(text: &str) -> Vec<NetworkAdapter> {
    let mut adapters = std::collections::BTreeMap::<String, NetworkAdapter>::new();

    for line in text.lines() {
        let mut it = line.split_whitespace();
        let (Some(_), Some(iface), Some(family), Some(addr_full)) =
            (it.next(), it.next(), it.next(), it.next())
        else {
            continue;
        };
        let name = iface.trim_end_matches(':').to_string();
        let addr = addr_full.split('/').next().unwrap_or("").to_string();
        let entry = adapters
            .entry(name.clone())
            .or_insert_with(|| NetworkAdapter {
                name,
                ..NetworkAdapter::default()
            });
        match family {
            "inet" if !addr.is_empty() => entry.ipv4.push(addr),
            "inet6" if !addr.is_empty() => entry.ipv6.push(addr),
            _ => {}
        }
    }

    adapters.into_values().collect()
}

#[cfg(not(target_os = "windows"))]
fn apply_unix_default_routes(adapters: &mut [NetworkAdapter], text: &str) {
    for line in text.lines() {
        let cols: Vec<&str> = line.split_whitespace().collect();
        if cols.len() < 5 {
            continue;
        }
        let gateway = cols
            .windows(2)
            .find(|pair| pair[0] == "via")
            .map(|pair| pair[1].to_string());
        let dev = cols
            .windows(2)
            .find(|pair| pair[0] == "dev")
            .map(|pair| pair[1]);
        if let (Some(gateway), Some(dev)) = (gateway, dev) {
            if let Some(adapter) = adapters.iter_mut().find(|adapter| adapter.name == dev) {
                adapter.gateways.push(gateway);
            }
        }
    }

    for adapter in adapters {
        dedup_vec(&mut adapter.gateways);
    }
}

#[cfg(not(target_os = "windows"))]
fn apply_unix_dns_servers(adapters: &mut [NetworkAdapter]) {
    let Ok(text) = fs::read_to_string("/etc/resolv.conf") else {
        return;
    };
    let mut dns_servers = text
        .lines()
        .filter_map(|line| line.strip_prefix("nameserver "))
        .map(str::trim)
        .filter(|value| !value.is_empty())
        .map(|value| value.to_string())
        .collect::<Vec<_>>();
    dedup_vec(&mut dns_servers);
    if dns_servers.is_empty() {
        return;
    }
    for adapter in adapters.iter_mut().filter(|adapter| adapter.is_active()) {
        adapter.dns_servers = dns_servers.clone();
    }
}

#[cfg(target_os = "windows")]
fn value_after_colon(line: &str) -> Option<&str> {
    line.split_once(':').map(|(_, value)| value.trim())
}

#[cfg(target_os = "windows")]
fn normalize_ipconfig_value(value: &str) -> String {
    value
        .trim()
        .trim_end_matches("(Preferred)")
        .trim_end_matches("(Deprecated)")
        .trim()
        .trim_matches(['(', ')'])
        .trim()
        .to_string()
}

#[cfg(target_os = "windows")]
fn is_noise_lan_neighbor(ip: &str, mac: &str) -> bool {
    let mac_upper = mac.to_ascii_uppercase();
    if mac_upper == "FF-FF-FF-FF-FF-FF" || mac_upper.starts_with("01-00-5E-") {
        return true;
    }

    ip == "255.255.255.255"
        || ip.starts_with("224.")
        || ip.starts_with("225.")
        || ip.starts_with("226.")
        || ip.starts_with("227.")
        || ip.starts_with("228.")
        || ip.starts_with("229.")
        || ip.starts_with("230.")
        || ip.starts_with("231.")
        || ip.starts_with("232.")
        || ip.starts_with("233.")
        || ip.starts_with("234.")
        || ip.starts_with("235.")
        || ip.starts_with("236.")
        || ip.starts_with("237.")
        || ip.starts_with("238.")
        || ip.starts_with("239.")
}

fn dedup_vec(values: &mut Vec<String>) {
    let mut seen = HashSet::new();
    values.retain(|value| seen.insert(value.clone()));
}

#[cfg(target_os = "windows")]
fn parse_lan_neighbors(text: &str) -> Vec<(String, String, String, String)> {
    let trimmed = text.trim();
    if trimmed.is_empty() {
        return Vec::new();
    }

    let Ok(value) = serde_json::from_str::<Value>(trimmed) else {
        return Vec::new();
    };
    let entries = match value {
        Value::Array(items) => items,
        other => vec![other],
    };

    let mut neighbors = Vec::with_capacity(entries.len());
    for entry in entries {
        let ip = entry
            .get("IPAddress")
            .and_then(|v| v.as_str())
            .unwrap_or("")
            .to_string();
        if ip.is_empty() {
            continue;
        }
        let mac = entry
            .get("LinkLayerAddress")
            .and_then(|v| v.as_str())
            .unwrap_or("unknown")
            .to_string();
        let state = entry
            .get("State")
            .and_then(|v| v.as_str())
            .unwrap_or("unknown")
            .to_string();
        let iface = entry
            .get("InterfaceAlias")
            .and_then(|v| v.as_str())
            .unwrap_or("unknown")
            .to_string();
        if is_noise_lan_neighbor(&ip, &mac) {
            continue;
        }
        neighbors.push((ip, mac, state, iface));
    }

    neighbors
}

#[cfg(target_os = "windows")]
fn parse_windows_services_json(text: &str) -> Result<Vec<ServiceEntry>, String> {
    let trimmed = text.trim();
    if trimmed.is_empty() {
        return Ok(Vec::new());
    }

    let value: Value = serde_json::from_str(trimmed)
        .map_err(|e| format!("Failed to parse PowerShell service JSON: {e}"))?;
    let entries = match value {
        Value::Array(items) => items,
        other => vec![other],
    };

    let mut services = Vec::with_capacity(entries.len());
    for entry in entries {
        let Some(name) = entry.get("Name").and_then(|v| v.as_str()) else {
            continue;
        };
        services.push(ServiceEntry {
            name: name.to_string(),
            status: entry
                .get("State")
                .and_then(|v| v.as_str())
                .unwrap_or("unknown")
                .to_string(),
            startup: entry
                .get("StartMode")
                .and_then(|v| v.as_str())
                .map(|v| v.to_string()),
            display_name: entry
                .get("DisplayName")
                .and_then(|v| v.as_str())
                .map(|v| v.to_string()),
            start_name: entry
                .get("StartName")
                .and_then(|v| v.as_str())
                .map(|v| v.to_string()),
        });
    }

    Ok(services)
}

#[cfg(target_os = "windows")]
fn windows_json_entries(node: Option<&Value>) -> Vec<Value> {
    match node.cloned() {
        Some(Value::Array(items)) => items,
        Some(other) => vec![other],
        None => Vec::new(),
    }
}

#[cfg(target_os = "windows")]
fn parse_windows_pnp_devices(node: Option<&Value>) -> Vec<WindowsPnpDevice> {
    windows_json_entries(node)
        .into_iter()
        .filter_map(|entry| {
            let name = entry
                .get("FriendlyName")
                .and_then(|v| v.as_str())
                .or_else(|| entry.get("Name").and_then(|v| v.as_str()))
                .unwrap_or("")
                .trim()
                .to_string();
            if name.is_empty() {
                return None;
            }
            Some(WindowsPnpDevice {
                name,
                status: entry
                    .get("Status")
                    .and_then(|v| v.as_str())
                    .unwrap_or("Unknown")
                    .trim()
                    .to_string(),
                problem: entry.get("Problem").and_then(|v| v.as_u64()).or_else(|| {
                    entry
                        .get("Problem")
                        .and_then(|v| v.as_i64())
                        .map(|v| v as u64)
                }),
                class_name: entry
                    .get("Class")
                    .and_then(|v| v.as_str())
                    .map(|v| v.trim().to_string()),
                instance_id: entry
                    .get("InstanceId")
                    .and_then(|v| v.as_str())
                    .map(|v| v.trim().to_string()),
            })
        })
        .collect()
}

#[cfg(target_os = "windows")]
fn parse_windows_sound_devices(node: Option<&Value>) -> Vec<WindowsSoundDevice> {
    windows_json_entries(node)
        .into_iter()
        .filter_map(|entry| {
            let name = entry
                .get("Name")
                .and_then(|v| v.as_str())
                .unwrap_or("")
                .trim()
                .to_string();
            if name.is_empty() {
                return None;
            }
            Some(WindowsSoundDevice {
                name,
                status: entry
                    .get("Status")
                    .and_then(|v| v.as_str())
                    .unwrap_or("Unknown")
                    .trim()
                    .to_string(),
                manufacturer: entry
                    .get("Manufacturer")
                    .and_then(|v| v.as_str())
                    .map(|v| v.trim().to_string()),
            })
        })
        .collect()
}

#[cfg(target_os = "windows")]
fn windows_device_has_issue(device: &WindowsPnpDevice) -> bool {
    !device.status.eq_ignore_ascii_case("ok") && !device.status.eq_ignore_ascii_case("unknown")
        || device.problem.unwrap_or(0) != 0
}

#[cfg(target_os = "windows")]
fn windows_sound_device_has_issue(device: &WindowsSoundDevice) -> bool {
    !device.status.eq_ignore_ascii_case("ok") && !device.status.eq_ignore_ascii_case("unknown")
}

#[cfg(target_os = "windows")]
fn is_microphone_like_name(name: &str) -> bool {
    let lower = name.to_ascii_lowercase();
    lower.contains("microphone")
        || lower.contains("mic")
        || lower.contains("input")
        || lower.contains("array")
        || lower.contains("capture")
        || lower.contains("record")
}

#[cfg(target_os = "windows")]
fn is_bluetooth_like_name(name: &str) -> bool {
    let lower = name.to_ascii_lowercase();
    lower.contains("bluetooth") || lower.contains("hands-free") || lower.contains("a2dp")
}

#[cfg(target_os = "windows")]
fn service_is_running(service: &ServiceEntry) -> bool {
    service.status.eq_ignore_ascii_case("running") || service.status.eq_ignore_ascii_case("active")
}

#[cfg(not(target_os = "windows"))]
fn parse_unix_services(status_text: &str, startup_text: &str) -> Vec<ServiceEntry> {
    let mut startup_modes = std::collections::HashMap::<String, String>::new();
    for line in startup_text.lines() {
        let mut it = line.split_whitespace();
        if let (Some(name), Some(mode)) = (it.next(), it.next()) {
            startup_modes.insert(name.to_string(), mode.to_string());
        }
    }

    let mut services = Vec::new();
    for line in status_text.lines() {
        let mut it = line.split_whitespace();
        let Some(unit) = it.next() else {
            continue;
        };
        let Some(load) = it.next() else {
            continue;
        };
        let Some(active) = it.next() else {
            continue;
        };
        let Some(sub) = it.next() else {
            continue;
        };
        let description = {
            let mut desc = String::new();
            for (i, w) in it.enumerate() {
                if i > 0 {
                    desc.push(' ');
                }
                desc.push_str(w);
            }
            if desc.is_empty() {
                None
            } else {
                Some(desc)
            }
        };
        services.push(ServiceEntry {
            name: unit.to_string(),
            status: format!("{}/{}", active, sub),
            startup: startup_modes
                .get(unit)
                .cloned()
                .or_else(|| Some(load.to_string())),
            display_name: description,
            start_name: None,
        });
    }

    services
}

// ── health_report ─────────────────────────────────────────────────────────────

/// Synthesized system health report — runs multiple checks and returns a
/// plain-English tiered verdict suitable for both developers and non-technical
/// users who just want to know if their machine is okay.
fn inspect_health_report() -> Result<String, String> {
    let mut needs_fix: Vec<String> = Vec::with_capacity(8);
    let mut watch: Vec<String> = Vec::with_capacity(8);
    let mut good: Vec<String> = Vec::with_capacity(8);
    let mut tips: Vec<String> = Vec::with_capacity(8);

    health_check_disk(&mut needs_fix, &mut watch, &mut good);
    health_check_memory(&mut watch, &mut good);
    health_check_network(&mut needs_fix, &mut watch, &mut good);
    health_check_pending_reboot(&mut watch, &mut good);
    health_check_services(&mut needs_fix, &mut watch, &mut good);
    health_check_thermal(&mut watch, &mut good);
    health_check_tools(&mut watch, &mut good, &mut tips);
    health_check_recent_errors(&mut watch, &mut tips);

    let overall = if !needs_fix.is_empty() {
        "ACTION REQUIRED"
    } else if !watch.is_empty() {
        "WORTH A LOOK"
    } else {
        "ALL GOOD"
    };

    let mut out = format!("System Health Report — {overall}\n\n");

    if !needs_fix.is_empty() {
        out.push_str("Needs fixing:\n");
        for item in &needs_fix {
            let _ = writeln!(out, "  [!] {item}");
        }
        out.push('\n');
    }
    if !watch.is_empty() {
        out.push_str("Worth watching:\n");
        for item in &watch {
            let _ = writeln!(out, "  [-] {item}");
        }
        out.push('\n');
    }
    if !good.is_empty() {
        out.push_str("Looking good:\n");
        for item in &good {
            let _ = writeln!(out, "  [+] {item}");
        }
        out.push('\n');
    }
    if !tips.is_empty() {
        out.push_str("To dig deeper:\n");
        for tip in &tips {
            let _ = writeln!(out, "  {tip}");
        }
    }

    Ok(out.trim_end().to_string())
}

fn health_check_disk(needs_fix: &mut Vec<String>, watch: &mut Vec<String>, good: &mut Vec<String>) {
    #[cfg(target_os = "windows")]
    {
        let script = r#"try {
    $d = Get-PSDrive C -ErrorAction Stop
    "$($d.Free)|$($d.Used)"
} catch { "ERR" }"#;
        if let Ok(out) = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
        {
            let text = String::from_utf8_lossy(&out.stdout);
            let text = text.trim();
            if !text.starts_with("ERR") {
                let mut it = text.splitn(3, '|');
                if let (Some(p0), Some(p1)) = (it.next(), it.next()) {
                    let free_bytes: u64 = p0.trim().parse().unwrap_or(0);
                    let used_bytes: u64 = p1.trim().parse().unwrap_or(0);
                    let total = free_bytes + used_bytes;
                    let free_gb = free_bytes / 1_073_741_824;
                    let pct_free = if total > 0 {
                        (free_bytes as f64 / total as f64 * 100.0) as u64
                    } else {
                        0
                    };
                    let msg = format!("Disk: {free_gb} GB free on C: ({pct_free}% available)");
                    if free_gb < 5 {
                        needs_fix.push(format!(
                            "{msg} — very low. Free up space or your system may slow down or stop working."
                        ));
                    } else if free_gb < 15 {
                        watch.push(format!("{msg} — getting low, consider cleaning up."));
                    } else {
                        good.push(msg);
                    }
                    return;
                }
            }
        }
        watch.push("Disk: could not read free space from C: drive.".to_string());
    }

    #[cfg(not(target_os = "windows"))]
    {
        if let Ok(out) = Command::new("df").args(["-BG", "/"]).output() {
            let text = String::from_utf8_lossy(&out.stdout);
            for line in text.lines().skip(1) {
                let mut it = line.split_whitespace();
                if let (Some(_), Some(_), Some(_), Some(avail_raw), Some(use_pct_raw)) =
                    (it.next(), it.next(), it.next(), it.next(), it.next())
                {
                    let avail_str = avail_raw.trim_end_matches('G');
                    let use_pct = use_pct_raw.trim_end_matches('%');
                    let avail_gb: u64 = avail_str.parse().unwrap_or(0);
                    let used_pct: u64 = use_pct.parse().unwrap_or(0);
                    let msg = format!("Disk: {avail_gb} GB free on / ({used_pct}% used)");
                    if avail_gb < 5 {
                        needs_fix.push(format!(
                            "{msg} — very low. Free up space to prevent system issues."
                        ));
                    } else if avail_gb < 15 {
                        watch.push(format!("{msg} — getting low."));
                    } else {
                        good.push(msg);
                    }
                    return;
                }
            }
        }
        watch.push("Disk: could not determine free space.".to_string());
    }
}

fn health_check_memory(watch: &mut Vec<String>, good: &mut Vec<String>) {
    #[cfg(target_os = "windows")]
    {
        let script = r#"try {
    $os = Get-CimInstance Win32_OperatingSystem -ErrorAction Stop
    "$($os.FreePhysicalMemory)|$($os.TotalVisibleMemorySize)"
} catch { "ERR" }"#;
        if let Ok(out) = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
        {
            let text = String::from_utf8_lossy(&out.stdout);
            let text = text.trim();
            if !text.starts_with("ERR") {
                let mut it = text.splitn(3, '|');
                if let (Some(p0), Some(p1)) = (it.next(), it.next()) {
                    let free_kb: u64 = p0.trim().parse().unwrap_or(0);
                    let total_kb: u64 = p1.trim().parse().unwrap_or(0);
                    if total_kb > 0 {
                        let free_gb = free_kb / 1_048_576;
                        let total_gb = total_kb / 1_048_576;
                        let free_pct = free_kb * 100 / total_kb;
                        let msg = format!(
                            "RAM: {free_gb} GB free of {total_gb} GB ({free_pct}% available)"
                        );
                        if free_pct < 10 {
                            watch.push(format!(
                                "{msg} — very low. Close unused apps to free up memory."
                            ));
                        } else if free_pct < 25 {
                            watch.push(format!("{msg} — running a bit low."));
                        } else {
                            good.push(msg);
                        }
                    }
                }
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        if let Ok(content) = std::fs::read_to_string("/proc/meminfo") {
            let mut total_kb = 0u64;
            let mut avail_kb = 0u64;
            for line in content.lines() {
                if line.starts_with("MemTotal:") {
                    total_kb = line
                        .split_whitespace()
                        .nth(1)
                        .and_then(|v| v.parse().ok())
                        .unwrap_or(0);
                } else if line.starts_with("MemAvailable:") {
                    avail_kb = line
                        .split_whitespace()
                        .nth(1)
                        .and_then(|v| v.parse().ok())
                        .unwrap_or(0);
                }
            }
            if total_kb > 0 {
                let free_gb = avail_kb / 1_048_576;
                let total_gb = total_kb / 1_048_576;
                let free_pct = avail_kb * 100 / total_kb;
                let msg =
                    format!("RAM: {free_gb} GB free of {total_gb} GB ({free_pct}% available)");
                if free_pct < 10 {
                    watch.push(format!("{msg} — very low. Close unused apps."));
                } else if free_pct < 25 {
                    watch.push(format!("{msg} — running a bit low."));
                } else {
                    good.push(msg);
                }
            }
        }
    }
}

/// Try running `cmd --arg` via PATH first, then via a known install-path fallback.
/// Prevents false "not installed" reports when the process PATH omits tool directories
/// (e.g. ~/.cargo/bin missing from a shortcut-launched or headless session).
fn probe_tool(cmd: &str, arg: &str) -> bool {
    if Command::new(cmd)
        .arg(arg)
        .stdout(std::process::Stdio::null())
        .stderr(std::process::Stdio::null())
        .status()
        .map(|s| s.success())
        .unwrap_or(false)
    {
        return true;
    }
    // Fallback: well-known Windows install locations for tools that live outside system32.
    #[cfg(windows)]
    {
        let home = std::env::var("USERPROFILE").unwrap_or_default();
        let fallback: Option<String> = match cmd {
            "cargo" | "rustc" | "rustup" => Some(format!(r"{}\\.cargo\\bin\\{}.exe", home, cmd)),
            "node" => Some(r"C:\Program Files\nodejs\node.exe".to_string()),
            "npm" => Some("C:\\Program Files\\nodejs\\npm.cmd".to_string()),
            _ => None,
        };
        if let Some(path) = fallback {
            return Command::new(&path)
                .arg(arg)
                .stdout(std::process::Stdio::null())
                .stderr(std::process::Stdio::null())
                .status()
                .map(|s| s.success())
                .unwrap_or(false);
        }
    }
    false
}

fn health_check_tools(watch: &mut Vec<String>, good: &mut Vec<String>, tips: &mut Vec<String>) {
    let tool_checks: &[(&str, &str, &str)] = &[
        ("git", "--version", "Git"),
        ("cargo", "--version", "Rust / Cargo"),
        ("node", "--version", "Node.js"),
        ("python", "--version", "Python"),
        ("python3", "--version", "Python 3"),
        ("npm", "--version", "npm"),
    ];

    let mut found: Vec<String> = Vec::with_capacity(tool_checks.len());
    let mut missing: Vec<String> = Vec::with_capacity(tool_checks.len());
    let mut python_found = false;

    for (cmd, arg, label) in tool_checks {
        if cmd.starts_with("python") && python_found {
            continue;
        }
        let ok = probe_tool(cmd, arg);
        if ok {
            found.push((*label).to_string());
            if cmd.starts_with("python") {
                python_found = true;
            }
        } else if !cmd.starts_with("python") || !python_found {
            missing.push((*label).to_string());
        }
    }

    if !found.is_empty() {
        good.push(format!("Dev tools found: {}", found.join(", ")));
    }
    if !missing.is_empty() {
        watch.push(format!(
            "Not installed (or not on PATH): {} — only matters if you need them",
            missing.join(", ")
        ));
        tips.push(
            "Run inspect_host(topic=\"toolchains\") for exact version details on all dev tools."
                .to_string(),
        );
    }
}

fn health_check_recent_errors(watch: &mut Vec<String>, tips: &mut Vec<String>) {
    #[cfg(target_os = "windows")]
    {
        let script = r#"try {
    $cutoff = (Get-Date).AddHours(-24)
    $count = (Get-WinEvent -FilterHashtable @{LogName='Application','System'; Level=1,2,3; StartTime=$cutoff} -MaxEvents 200 -ErrorAction SilentlyContinue | Measure-Object).Count
    $count
} catch { "0" }"#;
        if let Ok(out) = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
        {
            let text = String::from_utf8_lossy(&out.stdout);
            let count: u64 = text.trim().parse().unwrap_or(0);
            if count > 0 {
                watch.push(format!(
                    "{count} critical/error event{} in Windows event logs in the last 24 hours.",
                    if count == 1 { "" } else { "s" }
                ));
                tips.push(
                    "Run inspect_host(topic=\"log_check\") to see the actual error messages."
                        .to_string(),
                );
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        if let Ok(out) = Command::new("journalctl")
            .args(["-p", "3", "-n", "1", "--no-pager", "--quiet"])
            .output()
        {
            let text = String::from_utf8_lossy(&out.stdout);
            if !text.trim().is_empty() {
                watch.push("Critical/error entries found in the system journal.".to_string());
                tips.push(
                    "Run inspect_host(topic=\"log_check\") to see recent errors.".to_string(),
                );
            }
        }
    }
}

fn health_check_network(
    needs_fix: &mut Vec<String>,
    watch: &mut Vec<String>,
    good: &mut Vec<String>,
) {
    #[cfg(target_os = "windows")]
    {
        // Use .NET Ping directly — PS5.1 compatible, 2-second timeout.
        let script = r#"try {
    $ping = New-Object System.Net.NetworkInformation.Ping
    $r = $ping.Send("1.1.1.1", 2000)
    if ($r.Status -eq 'Success') { "OK|$($r.RoundtripTime)" } else { "FAIL" }
} catch { "FAIL" }"#;
        if let Ok(out) = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
        {
            let text = String::from_utf8_lossy(&out.stdout);
            let text = text.trim();
            if text.starts_with("OK") {
                let latency = text.split('|').nth(1).unwrap_or("?");
                let latency_ms: u64 = latency.parse().unwrap_or(0);
                let msg = format!("Internet connectivity: reachable ({}ms RTT)", latency_ms);
                if latency_ms > 300 {
                    watch.push(format!("{msg} — high latency, may indicate network issue."));
                } else {
                    good.push(msg);
                }
            } else {
                needs_fix.push(
                    "Internet connectivity: unreachable — could not ping 1.1.1.1. \
                     Check adapter, gateway, or DNS."
                        .to_string(),
                );
            }
            return;
        }
        watch.push("Network: could not run connectivity check.".to_string());
    }

    #[cfg(not(target_os = "windows"))]
    {
        let _ = watch;
        let ok = Command::new("ping")
            .args(["-c", "1", "-W", "2", "1.1.1.1"])
            .stdout(std::process::Stdio::null())
            .stderr(std::process::Stdio::null())
            .status()
            .map(|s| s.success())
            .unwrap_or(false);
        if ok {
            good.push("Internet connectivity: reachable.".to_string());
        } else {
            needs_fix.push("Internet connectivity: unreachable — cannot ping 1.1.1.1.".to_string());
        }
    }
}

fn health_check_pending_reboot(watch: &mut Vec<String>, good: &mut Vec<String>) {
    #[cfg(target_os = "windows")]
    {
        let script = r#"try {
    $pending = $false
    $reasons = @()
    if (Test-Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\RebootPending' -ErrorAction SilentlyContinue) {
        $pending = $true; $reasons += 'CBS/component update'
    }
    if (Test-Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired' -ErrorAction SilentlyContinue) {
        $pending = $true; $reasons += 'Windows Update'
    }
    $pfr = (Get-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager' -Name PendingFileRenameOperations -ErrorAction SilentlyContinue)
    if ($pfr -and $pfr.PendingFileRenameOperations) {
        $pending = $true; $reasons += 'file rename ops'
    }
    if ($pending) { "PENDING|$($reasons -join ',')" } else { "OK" }
} catch { "OK" }"#;
        if let Ok(out) = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
        {
            let text = String::from_utf8_lossy(&out.stdout);
            let text = text.trim();
            if text.starts_with("PENDING") {
                let reasons = text.split('|').nth(1).unwrap_or("unknown reason");
                watch.push(format!(
                    "Pending reboot required ({reasons}) — restart when convenient to apply changes."
                ));
            } else {
                good.push("No pending reboot.".to_string());
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        // Linux: check if a kernel update is pending (requires reboot to take effect)
        if std::path::Path::new("/var/run/reboot-required").exists() {
            watch.push(
                "Pending reboot required — a kernel or package update needs a restart.".to_string(),
            );
        } else {
            good.push("No pending reboot.".to_string());
        }
    }
}

fn health_check_services(
    needs_fix: &mut Vec<String>,
    watch: &mut Vec<String>,
    good: &mut Vec<String>,
) {
    #[cfg(not(target_os = "windows"))]
    let _ = (&needs_fix, &good);
    #[cfg(target_os = "windows")]
    let _ = &watch;

    #[cfg(target_os = "windows")]
    {
        // Only checks services whose being stopped indicates a real system problem.
        let script = r#"try {
    $names = @('EventLog','WinDefend','Dnscache')
    $stopped = @()
    foreach ($n in $names) {
        $s = Get-Service $n -ErrorAction SilentlyContinue
        if ($s -and $s.Status -ne 'Running') { $stopped += $n }
    }
    if ($stopped.Count -gt 0) { "STOPPED|$($stopped -join ',')" } else { "OK" }
} catch { "OK" }"#;
        if let Ok(out) = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
        {
            let text = String::from_utf8_lossy(&out.stdout);
            let text = text.trim();
            if text.starts_with("STOPPED") {
                let names = text.split('|').nth(1).unwrap_or("unknown");
                needs_fix.push(format!(
                    "Critical service(s) not running: {names} — these should always be active."
                ));
            } else {
                good.push("Core services (Event Log, Defender, DNS) all running.".to_string());
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        // Linux: check systemd failed units
        if let Ok(out) = Command::new("systemctl")
            .args(["--failed", "--no-legend", "--plain"])
            .output()
        {
            let text = String::from_utf8_lossy(&out.stdout);
            let failed: Vec<&str> = text.lines().filter(|l| !l.trim().is_empty()).collect();
            if !failed.is_empty() {
                watch.push(format!(
                    "{} failed systemd unit(s): {}",
                    failed.len(),
                    failed.join(", ")
                ));
            } else {
                good.push("No failed systemd units.".to_string());
            }
        }
    }
}

fn health_check_thermal(watch: &mut Vec<String>, good: &mut Vec<String>) {
    #[cfg(target_os = "windows")]
    {
        // WMI thermal zones — best-effort, silently skip if unavailable or requires elevation.
        let script = r#"try {
    $zones = Get-WmiObject -Namespace "root/wmi" -Class MSAcpi_ThermalZoneTemperature -ErrorAction Stop
    $temps = $zones | ForEach-Object { [math]::Round(($_.CurrentTemperature - 2732) / 10, 1) }
    $max = ($temps | Measure-Object -Maximum).Maximum
    "$max"
} catch { "NA" }"#;
        if let Ok(out) = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
        {
            let text = String::from_utf8_lossy(&out.stdout);
            let text = text.trim();
            if text != "NA" && !text.is_empty() {
                if let Ok(temp) = text.parse::<f64>() {
                    let msg = format!("CPU thermal: {temp:.0}°C peak zone temperature");
                    if temp >= 90.0 {
                        watch.push(format!("{msg} — very high, check cooling and airflow."));
                    } else if temp >= 75.0 {
                        watch.push(format!(
                            "{msg} — elevated under load, monitor for throttling."
                        ));
                    } else {
                        good.push(format!("{msg} — normal."));
                    }
                }
            }
            // If NA or unparseable, skip silently — thermal WMI often needs admin.
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        // Linux: read first available hwmon temp input
        let paths = [
            "/sys/class/thermal/thermal_zone0/temp",
            "/sys/class/hwmon/hwmon0/temp1_input",
        ];
        for path in &paths {
            if let Ok(content) = std::fs::read_to_string(path) {
                if let Ok(raw) = content.trim().parse::<u64>() {
                    let temp_c = raw / 1000;
                    let msg = format!("CPU thermal: {temp_c}°C");
                    if temp_c >= 90 {
                        watch.push(format!("{msg} — very high, check cooling."));
                    } else if temp_c >= 75 {
                        watch.push(format!("{msg} — elevated under load."));
                    } else {
                        good.push(format!("{msg} — normal."));
                    }
                    return;
                }
            }
        }
    }
}

// ── log_check ─────────────────────────────────────────────────────────────────

fn inspect_log_check(lookback_hours: Option<u32>, max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: log_check\n\n");

    #[cfg(target_os = "windows")]
    {
        // Pull recent critical/error events from Windows Application and System logs.
        let hours = lookback_hours.unwrap_or(24);
        let _ = write!(
            out,
            "Checking System/Application logs from the last {} hours...\n\n",
            hours
        );

        let n = max_entries.clamp(1, 50);
        let script = format!(
            r#"try {{
    $events = Get-WinEvent -FilterHashtable @{{LogName='Application','System'; Level=1,2,3; StartTime=(Get-Date).AddHours(-{hours})}} -MaxEvents 100 -ErrorAction SilentlyContinue
    if (-not $events) {{ "NO_EVENTS"; exit }}
    $events | Select-Object -First {n} | ForEach-Object {{
        $line = $_.TimeCreated.ToString('yyyy-MM-dd HH:mm:ss') + '|' + $_.LevelDisplayName + '|' + $_.ProviderName + '|' + (($_.Message -split '[\r\n]')[0].Trim())
        $line
    }}
}} catch {{ "ERROR:" + $_.Exception.Message }}"#,
            hours = hours,
            n = n
        );
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", &script])
            .output()
            .map_err(|e| format!("log_check: failed to run PowerShell: {e}"))?;

        let raw = String::from_utf8_lossy(&output.stdout);
        let text = raw.trim();

        if text.is_empty() || text == "NO_EVENTS" {
            out.push_str("No critical or error events found in Application/System logs.\n");
            return Ok(out.trim_end().to_string());
        }
        if text.starts_with("ERROR:") {
            let _ = writeln!(out, "Warning: event log query returned: {text}");
            return Ok(out.trim_end().to_string());
        }

        let mut count = 0usize;
        for line in text.lines() {
            let mut it = line.splitn(4, '|');
            if let (Some(time), Some(level), Some(source), Some(msg)) =
                (it.next(), it.next(), it.next(), it.next())
            {
                let _ = writeln!(out, "[{time}] [{level}] {source}: {msg}");
                count += 1;
            }
        }
        let _ = write!(
            out,
            "\nEvents shown: {count} (critical/error from Application + System logs)\n"
        );
    }

    #[cfg(not(target_os = "windows"))]
    {
        let _ = lookback_hours;
        // Use journalctl on Linux/macOS if available.
        let n = max_entries.clamp(1, 50).to_string();
        let output = Command::new("journalctl")
            .args(["-p", "3", "-n", &n, "--no-pager", "--output=short-precise"])
            .output();

        match output {
            Ok(o) if o.status.success() => {
                let text = String::from_utf8_lossy(&o.stdout);
                let trimmed = text.trim();
                if trimmed.is_empty() || trimmed.contains("No entries") {
                    out.push_str("No critical or error entries found in the system journal.\n");
                } else {
                    out.push_str(trimmed);
                    out.push('\n');
                    out.push_str("\n(source: journalctl -p 3 = critical/alert/emergency/error)\n");
                }
            }
            _ => {
                // Fallback: check /var/log/syslog or /var/log/messages
                let log_paths = ["/var/log/syslog", "/var/log/messages"];
                let mut found = false;
                for log_path in &log_paths {
                    if let Ok(content) = std::fs::read_to_string(log_path) {
                        let lines: Vec<&str> = content.lines().collect();
                        let mut tail: Vec<&str> = lines
                            .iter()
                            .rev()
                            .filter(|l| {
                                let l_lower = l.to_ascii_lowercase();
                                l_lower.contains("error") || l_lower.contains("crit")
                            })
                            .take(max_entries)
                            .copied()
                            .collect::<Vec<_>>();
                        tail.reverse();
                        if !tail.is_empty() {
                            let _ = write!(out, "Source: {log_path}\n");
                            for l in &tail {
                                out.push_str(l);
                                out.push('\n');
                            }
                            found = true;
                            break;
                        }
                    }
                }
                if !found {
                    out.push_str(
                        "journalctl not found and no readable syslog detected on this system.\n",
                    );
                }
            }
        }
    }

    Ok(out.trim_end().to_string())
}

// ── startup_items ─────────────────────────────────────────────────────────────

fn inspect_startup_items(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: startup_items\n\n");

    #[cfg(target_os = "windows")]
    {
        // Query both HKLM and HKCU Run keys.
        let script = r#"
$hives = @(
    @{Hive='HKLM'; Path='HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run'},
    @{Hive='HKCU'; Path='HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run'},
    @{Hive='HKLM (32-bit)'; Path='HKLM:\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run'}
)
foreach ($h in $hives) {
    try {
        $props = Get-ItemProperty -Path $h.Path -ErrorAction Stop
        $props.PSObject.Properties | Where-Object { $_.Name -notlike 'PS*' } | ForEach-Object {
            "$($h.Hive)|$($_.Name)|$($_.Value)"
        }
    } catch {}
}
"#;
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
            .map_err(|e| format!("startup_items: failed to run PowerShell: {e}"))?;

        let raw = String::from_utf8_lossy(&output.stdout);
        let text = raw.trim();

        let entries: Vec<(String, String, String)> = text
            .lines()
            .filter_map(|l| {
                let mut it = l.splitn(3, '|');
                match (it.next(), it.next(), it.next()) {
                    (Some(a), Some(b), Some(c)) => {
                        Some((a.to_string(), b.to_string(), c.to_string()))
                    }
                    _ => None,
                }
            })
            .take(max_entries)
            .collect();

        if entries.is_empty() {
            out.push_str("No startup entries found in the Windows Run registry keys.\n");
        } else {
            out.push_str("Registry run keys (programs that start with Windows):\n\n");
            let mut last_hive = String::new();
            for (hive, name, value) in &entries {
                if *hive != last_hive {
                    let _ = writeln!(out, "[{}]", hive);
                    last_hive = hive.clone();
                }
                // Truncate very long values (paths with many args)
                let display = if value.len() > 100 {
                    format!("{}…", safe_head(value, 100))
                } else {
                    value.clone()
                };
                let _ = writeln!(out, "  {name}: {display}");
            }
            let _ = write!(out, "\nTotal startup entries: {}\n", entries.len());
        }

        // 3. Unified Startup Command check (Task Manager style)
        let unified_script = r#"Get-CimInstance Win32_StartupCommand | ForEach-Object { "  $($_.Name): $($_.Command) ($($_.Location))" }"#;
        if let Ok(unified_out) = Command::new("powershell")
            .args(["-NoProfile", "-Command", unified_script])
            .output()
        {
            let unified_text = String::from_utf8_lossy(&unified_out.stdout);
            let trimmed = unified_text.trim();
            if !trimmed.is_empty() {
                out.push_str("\n=== Unified Startup Commands (WMI) ===\n");
                out.push_str(trimmed);
                out.push('\n');
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        // On Linux: systemd enabled services + cron @reboot entries.
        let output = Command::new("systemctl")
            .args([
                "list-unit-files",
                "--type=service",
                "--state=enabled",
                "--no-legend",
                "--no-pager",
                "--plain",
            ])
            .output();

        match output {
            Ok(o) if o.status.success() => {
                let text = String::from_utf8_lossy(&o.stdout);
                let services: Vec<&str> = text
                    .lines()
                    .filter(|l| !l.trim().is_empty())
                    .take(max_entries)
                    .collect();
                if services.is_empty() {
                    out.push_str("No enabled systemd services found.\n");
                } else {
                    out.push_str("Enabled systemd services (run at boot):\n\n");
                    for s in &services {
                        let _ = write!(out, "  {s}\n");
                    }
                    let _ = write!(out, "\nShowing {} of enabled services.\n", services.len());
                }
            }
            _ => {
                out.push_str(
                    "systemctl not found on this system. Cannot enumerate startup services.\n",
                );
            }
        }

        // Check @reboot cron entries.
        if let Ok(cron_out) = Command::new("crontab").args(["-l"]).output() {
            let cron_text = String::from_utf8_lossy(&cron_out.stdout);
            let reboot_entries: Vec<&str> = cron_text
                .lines()
                .filter(|l| l.trim_start().starts_with("@reboot"))
                .collect();
            if !reboot_entries.is_empty() {
                out.push_str("\nCron @reboot entries:\n");
                for e in reboot_entries {
                    let _ = write!(out, "  {e}\n");
                }
            }
        }
    }

    Ok(out.trim_end().to_string())
}

fn inspect_os_config() -> Result<String, String> {
    let mut out = String::from("Host inspection: OS Configuration\n\n");

    #[cfg(target_os = "windows")]
    {
        // Power Plan
        if let Ok(power_out) = Command::new("powercfg").args(["/getactivescheme"]).output() {
            let power_str = String::from_utf8_lossy(&power_out.stdout);
            out.push_str("=== Power Plan ===\n");
            out.push_str(power_str.trim());
            out.push_str("\n\n");
        }

        // Firewall Status
        let fw_script =
            "Get-NetFirewallProfile | Format-Table -Property Name, Enabled -AutoSize | Out-String";
        if let Ok(fw_out) = Command::new("powershell")
            .args(["-NoProfile", "-Command", fw_script])
            .output()
        {
            let fw_str = String::from_utf8_lossy(&fw_out.stdout);
            out.push_str("=== Firewall Profiles ===\n");
            out.push_str(fw_str.trim());
            out.push_str("\n\n");
        }

        // System Uptime
        let uptime_script =
            "(Get-CimInstance -ClassName Win32_OperatingSystem).LastBootUpTime.ToString()";
        if let Ok(uptime_out) = Command::new("powershell")
            .args(["-NoProfile", "-Command", uptime_script])
            .output()
        {
            let uptime_str = String::from_utf8_lossy(&uptime_out.stdout);
            out.push_str("=== System Uptime (Last Boot) ===\n");
            out.push_str(uptime_str.trim());
            out.push_str("\n\n");
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        // Uptime
        if let Ok(uptime_out) = Command::new("uptime").args(["-p"]).output() {
            let uptime_str = String::from_utf8_lossy(&uptime_out.stdout);
            out.push_str("=== System Uptime ===\n");
            out.push_str(uptime_str.trim());
            out.push_str("\n\n");
        }

        // Firewall (ufw status if available)
        if let Ok(ufw_out) = Command::new("ufw").arg("status").output() {
            let ufw_str = String::from_utf8_lossy(&ufw_out.stdout);
            if !ufw_str.trim().is_empty() {
                out.push_str("=== Firewall (UFW) ===\n");
                out.push_str(ufw_str.trim());
                out.push_str("\n\n");
            }
        }
    }
    Ok(out.trim_end().to_string())
}

pub async fn resolve_host_issue(args: &Value) -> Result<String, String> {
    let action = args
        .get("action")
        .and_then(|v| v.as_str())
        .ok_or_else(|| "Missing required argument: 'action'".to_string())?;

    let target = args
        .get("target")
        .and_then(|v| v.as_str())
        .unwrap_or("")
        .trim();

    if target.is_empty() && action != "clear_temp" {
        return Err("Missing required argument: 'target' for this action".to_string());
    }

    match action {
        "install_package" => {
            #[cfg(target_os = "windows")]
            {
                let cmd = format!("winget install --id {} -e --accept-package-agreements --accept-source-agreements", target);
                match Command::new("powershell")
                    .args(["-NoProfile", "-Command", &cmd])
                    .output()
                {
                    Ok(out) => Ok(format!(
                        "Executed remediation (winget install):\n{}",
                        String::from_utf8_lossy(&out.stdout)
                    )),
                    Err(e) => Err(format!("Failed to run winget: {}", e)),
                }
            }
            #[cfg(not(target_os = "windows"))]
            {
                Err(
                    "install_package via wrapper is only supported on Windows currently (winget)"
                        .to_string(),
                )
            }
        }
        "restart_service" => {
            #[cfg(target_os = "windows")]
            {
                let cmd = format!("Restart-Service -Name {} -Force", target);
                match Command::new("powershell")
                    .args(["-NoProfile", "-Command", &cmd])
                    .output()
                {
                    Ok(out) => {
                        let err_str = String::from_utf8_lossy(&out.stderr);
                        if !err_str.is_empty() {
                            return Err(format!("Error restarting service:\n{}", err_str));
                        }
                        Ok(format!("Successfully restarted service: {}", target))
                    }
                    Err(e) => Err(format!("Failed to restart service: {}", e)),
                }
            }
            #[cfg(not(target_os = "windows"))]
            {
                Err(
                    "restart_service via wrapper is only supported on Windows currently"
                        .to_string(),
                )
            }
        }
        "clear_temp" => {
            #[cfg(target_os = "windows")]
            {
                let cmd = "Remove-Item -Path \"$env:TEMP\\*\" -Recurse -Force -ErrorAction SilentlyContinue";
                match Command::new("powershell")
                    .args(["-NoProfile", "-Command", cmd])
                    .output()
                {
                    Ok(_) => Ok("Successfully cleared temporary files".to_string()),
                    Err(e) => Err(format!("Failed to clear temp: {}", e)),
                }
            }
            #[cfg(not(target_os = "windows"))]
            {
                Err("clear_temp via wrapper is only supported on Windows currently".to_string())
            }
        }
        other => Err(format!("Unknown remediation action: {}", other)),
    }
}

// ── storage ───────────────────────────────────────────────────────────────────

fn inspect_storage(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: storage\n\n");
    let _ = max_entries; // used by non-Windows branch

    // ── Drive overview ────────────────────────────────────────────────────────
    out.push_str("Drives:\n");

    #[cfg(target_os = "windows")]
    {
        let script = r#"Get-PSDrive -PSProvider 'FileSystem' | ForEach-Object {
    $free = $_.Free
    $used = $_.Used
    if ($free -eq $null) { $free = 0 }
    if ($used -eq $null) { $used = 0 }
    $total = $free + $used
    "$($_.Name)|$free|$used|$total"
}"#;
        match Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
        {
            Ok(o) => {
                let text = String::from_utf8_lossy(&o.stdout);
                let mut drive_count = 0usize;
                for line in text.lines() {
                    let mut it = line.trim().splitn(5, '|');
                    if let (Some(name), Some(p1), _, Some(p3)) =
                        (it.next(), it.next(), it.next(), it.next())
                    {
                        let free: u64 = p1.parse().unwrap_or(0);
                        let total: u64 = p3.parse().unwrap_or(0);
                        if total == 0 {
                            continue;
                        }
                        let free_gb = free / 1_073_741_824;
                        let total_gb = total / 1_073_741_824;
                        let used_pct = ((total - free) as f64 / total as f64 * 100.0) as u64;
                        let bar_len = 20usize;
                        let filled = (used_pct as usize * bar_len / 100).min(bar_len);
                        let bar: String = "#".repeat(filled) + &".".repeat(bar_len - filled);
                        let warn = if free_gb < 5 {
                            " [!] CRITICALLY LOW"
                        } else if free_gb < 15 {
                            " [-] LOW"
                        } else {
                            ""
                        };
                        let _ = writeln!(out,
                            "  {name}:  [{bar}] {used_pct}% used — {free_gb} GB free of {total_gb} GB{warn}"
                        );
                        drive_count += 1;
                    }
                }
                if drive_count == 0 {
                    out.push_str("  (could not enumerate drives)\n");
                }
            }
            Err(e) => {
                let _ = writeln!(out, "  (drive scan failed: {e})");
            }
        }

        // ── Real-time Performance (Latency) ──────────────────────────────────
        let latency_script = "Get-CimInstance Win32_PerfFormattedData_PerfDisk_PhysicalDisk -Filter \"Name='_Total'\" | Select-Object -ExpandProperty AvgDiskQueueLength";
        match Command::new("powershell")
            .args(["-NoProfile", "-Command", latency_script])
            .output()
        {
            Ok(o) => {
                out.push_str("\nReal-time Disk Intensity:\n");
                let text = String::from_utf8_lossy(&o.stdout).trim().to_string();
                if !text.is_empty() {
                    let _ = writeln!(out, "  Average Disk Queue Length: {text}");
                    if let Ok(q) = text.parse::<f64>() {
                        if q > 2.0 {
                            out.push_str(
                                "  [!] WARNING: High disk latency detected (Queue Length > 2.0)\n",
                            );
                        } else {
                            out.push_str("  [~] Disk latency is within healthy bounds.\n");
                        }
                    }
                } else {
                    out.push_str("  Average Disk Queue Length: unavailable\n");
                }
            }
            Err(_) => {
                out.push_str("\nReal-time Disk Intensity:\n");
                out.push_str("  Average Disk Queue Length: unavailable\n");
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        match Command::new("df")
            .args(["-h", "--output=target,size,avail,pcent"])
            .output()
        {
            Ok(o) => {
                let text = String::from_utf8_lossy(&o.stdout);
                let mut count = 0usize;
                for line in text.lines().skip(1) {
                    let mut it = line.split_whitespace();
                    if let (Some(fs), Some(size), Some(avail), Some(used)) =
                        (it.next(), it.next(), it.next(), it.next())
                    {
                        if !fs.starts_with("tmpfs") {
                            let _ = write!(
                                out,
                                "  {}  size: {}  avail: {}  used: {}\n",
                                fs, size, avail, used
                            );
                            count += 1;
                            if count >= max_entries {
                                break;
                            }
                        }
                    }
                }
            }
            Err(e) => {
                let _ = write!(out, "  (df failed: {e})\n");
            }
        }
    }

    // ── Large developer cache directories ─────────────────────────────────────
    out.push_str("\nLarge developer cache directories (if present):\n");

    #[cfg(target_os = "windows")]
    {
        let home = std::env::var("USERPROFILE").unwrap_or_default();
        let check_dirs: &[(&str, &str)] = &[
            ("Temp", r"AppData\Local\Temp"),
            ("npm cache", r"AppData\Roaming\npm-cache"),
            ("Cargo registry", r".cargo\registry"),
            ("Cargo git", r".cargo\git"),
            ("pip cache", r"AppData\Local\pip\cache"),
            ("Yarn cache", r"AppData\Local\Yarn\Cache"),
            (".rustup toolchains", r".rustup\toolchains"),
            ("node_modules (home)", r"node_modules"),
        ];

        let mut found_any = false;
        for (label, rel) in check_dirs {
            let full = format!(r"{}\{}", home, rel);
            let path = std::path::Path::new(&full);
            if path.exists() {
                // Quick size estimate via PowerShell (non-blocking cap at 5s)
                let size_script = format!(
                    r#"try {{ $s = (Get-ChildItem -Path '{}' -Recurse -ErrorAction SilentlyContinue | Measure-Object -Property Length -Sum).Sum; [math]::Round($s/1MB,0) }} catch {{ '?' }}"#,
                    full.replace('\'', "''")
                );
                let size_mb = Command::new("powershell")
                    .args(["-NoProfile", "-Command", &size_script])
                    .output()
                    .ok()
                    .map(|o| String::from_utf8_lossy(&o.stdout).trim().to_string())
                    .unwrap_or_else(|| "?".to_string());
                let _ = writeln!(out, "  {label}: {size_mb} MB  ({full})");
                found_any = true;
            }
        }
        if !found_any {
            out.push_str("  (none of the common cache directories found)\n");
        }

        out.push_str("\nTip: to reclaim space, run inspect_host(topic=\"fix_plan\", issue=\"free up disk space\")\n");
    }

    #[cfg(not(target_os = "windows"))]
    {
        let home = std::env::var("HOME").unwrap_or_default();
        let check_dirs: &[(&str, &str)] = &[
            ("npm cache", ".npm"),
            ("Cargo registry", ".cargo/registry"),
            ("pip cache", ".cache/pip"),
            (".rustup toolchains", ".rustup/toolchains"),
            ("Yarn cache", ".cache/yarn"),
        ];
        let mut found_any = false;
        for (label, rel) in check_dirs {
            let full = format!("{}/{}", home, rel);
            if std::path::Path::new(&full).exists() {
                let size = Command::new("du")
                    .args(["-sh", &full])
                    .output()
                    .ok()
                    .map(|o| {
                        let s = String::from_utf8_lossy(&o.stdout);
                        s.split_whitespace().next().unwrap_or("?").to_string()
                    })
                    .unwrap_or_else(|| "?".to_string());
                let _ = write!(out, "  {label}: {size}  ({full})\n");
                found_any = true;
            }
        }
        if !found_any {
            out.push_str("  (none of the common cache directories found)\n");
        }
    }

    Ok(out.trim_end().to_string())
}

// ── hardware ──────────────────────────────────────────────────────────────────

fn inspect_hardware() -> Result<String, String> {
    let mut out = String::from("Host inspection: hardware\n\n");

    #[cfg(target_os = "windows")]
    {
        // CPU
        let cpu_script = r#"Get-CimInstance Win32_Processor | ForEach-Object {
    "$($_.Name.Trim())|$($_.NumberOfCores)|$($_.NumberOfLogicalProcessors)|$([math]::Round($_.MaxClockSpeed/1000,1))"
} | Select-Object -First 1"#;
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", cpu_script])
            .output()
        {
            let text = String::from_utf8_lossy(&o.stdout);
            let text = text.trim();
            let mut it = text.splitn(5, '|');
            if let (Some(p0), Some(p1), Some(p2), Some(p3)) =
                (it.next(), it.next(), it.next(), it.next())
            {
                let _ = write!(
                    out,
                    "CPU: {}\n  {} physical cores, {} logical processors, {:.1} GHz\n\n",
                    p0,
                    p1,
                    p2,
                    p3.parse::<f32>().unwrap_or(0.0)
                );
            } else {
                let _ = write!(out, "CPU: {text}\n\n");
            }
        }

        // RAM (total installed + speed)
        let ram_script = r#"$sticks = Get-CimInstance Win32_PhysicalMemory
$total = ($sticks | Measure-Object Capacity -Sum).Sum / 1GB
$speed = ($sticks | Select-Object -First 1).Speed
"$([math]::Round($total,0)) GB @ $($speed) MHz ($($sticks.Count) stick(s))""#;
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", ram_script])
            .output()
        {
            let text = String::from_utf8_lossy(&o.stdout);
            let _ = write!(out, "RAM: {}\n\n", text.trim().trim_matches('"'));
        }

        // GPU(s)
        let gpu_script = r#"Get-CimInstance Win32_VideoController | ForEach-Object {
    "$($_.Name)|$($_.DriverVersion)|$($_.CurrentHorizontalResolution)x$($_.CurrentVerticalResolution)"
}"#;
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", gpu_script])
            .output()
        {
            let text = String::from_utf8_lossy(&o.stdout);
            let lines: Vec<&str> = text.lines().collect();
            if !lines.is_empty() {
                out.push_str("GPU(s):\n");
                for line in lines.iter().filter(|l| !l.trim().is_empty()) {
                    let mut it = line.trim().splitn(4, '|');
                    if let (Some(p0), Some(p1), Some(p2)) = (it.next(), it.next(), it.next()) {
                        let res = if p2 == "x" || p2.starts_with('0') {
                            String::new()
                        } else {
                            format!(" — {}@display", p2)
                        };
                        let _ = write!(out, "  {}\n    Driver: {}{}\n", p0, p1, res);
                    } else {
                        let _ = writeln!(out, "  {}", line.trim());
                    }
                }
                out.push('\n');
            }
        }

        // Motherboard + BIOS + Virtualization
        let mb_script = r#"$mb = Get-CimInstance Win32_BaseBoard
$bios = Get-CimInstance Win32_BIOS
$cs = Get-CimInstance Win32_ComputerSystem
$proc = Get-CimInstance Win32_Processor | Select-Object -First 1
$virt = "Hypervisor: $($cs.HypervisorPresent)|SLAT: $($proc.SecondLevelAddressTranslationExtensions)"
"$($mb.Manufacturer.Trim()) $($mb.Product.Trim())|BIOS: $($bios.Manufacturer.Trim()) $($bios.SMBIOSBIOSVersion.Trim()) ($($bios.ReleaseDate))|$virt""#;
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", mb_script])
            .output()
        {
            let text = String::from_utf8_lossy(&o.stdout);
            let text = text.trim().trim_matches('"');
            let mut it = text.splitn(5, '|');
            if let (Some(p0), Some(p1), Some(p2), Some(p3)) =
                (it.next(), it.next(), it.next(), it.next())
            {
                let _ = write!(
                    out,
                    "Motherboard: {}\n{}\nVirtualization: {}, {}\n\n",
                    p0.trim(),
                    p1.trim(),
                    p2.trim(),
                    p3.trim()
                );
            }
        }

        // Display(s)
        let disp_script = r#"Get-CimInstance Win32_DesktopMonitor | Where-Object {$_.ScreenWidth -gt 0} | ForEach-Object {
    "$($_.Name)|$($_.ScreenWidth)x$($_.ScreenHeight)"
}"#;
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", disp_script])
            .output()
        {
            let text = String::from_utf8_lossy(&o.stdout);
            let lines: Vec<&str> = text.lines().filter(|l| !l.trim().is_empty()).collect();
            if !lines.is_empty() {
                out.push_str("Display(s):\n");
                for line in &lines {
                    let mut it = line.trim().splitn(3, '|');
                    if let (Some(p0), Some(p1)) = (it.next(), it.next()) {
                        let _ = writeln!(out, "  {} — {}", p0.trim(), p1);
                    }
                }
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        // CPU via /proc/cpuinfo
        if let Ok(content) = std::fs::read_to_string("/proc/cpuinfo") {
            let model = content
                .lines()
                .find(|l| l.starts_with("model name"))
                .and_then(|l| l.split(':').nth(1))
                .map(str::trim)
                .unwrap_or("unknown");
            let cores = content
                .lines()
                .filter(|l| l.starts_with("processor"))
                .count();
            let _ = write!(out, "CPU: {model}\n  {cores} logical processors\n\n");
        }

        // RAM
        if let Ok(content) = std::fs::read_to_string("/proc/meminfo") {
            let total_kb: u64 = content
                .lines()
                .find(|l| l.starts_with("MemTotal:"))
                .and_then(|l| l.split_whitespace().nth(1))
                .and_then(|v| v.parse().ok())
                .unwrap_or(0);
            let total_gb = total_kb / 1_048_576;
            let _ = write!(out, "RAM: {total_gb} GB total\n\n");
        }

        // GPU via lspci
        if let Ok(o) = Command::new("lspci").args(["-vmm"]).output() {
            let text = String::from_utf8_lossy(&o.stdout);
            let gpu_lines: Vec<&str> = text
                .lines()
                .filter(|l| l.contains("VGA") || l.contains("Display") || l.contains("3D"))
                .collect();
            if !gpu_lines.is_empty() {
                out.push_str("GPU(s):\n");
                for l in gpu_lines {
                    let _ = write!(out, "  {l}\n");
                }
                out.push('\n');
            }
        }

        // DMI/BIOS info
        if let Ok(o) = Command::new("dmidecode")
            .args(["-t", "baseboard", "-t", "bios"])
            .output()
        {
            let text = String::from_utf8_lossy(&o.stdout);
            out.push_str("Motherboard/BIOS:\n");
            for line in text
                .lines()
                .filter(|l| {
                    l.contains("Manufacturer:")
                        || l.contains("Product Name:")
                        || l.contains("Version:")
                })
                .take(6)
            {
                let _ = write!(out, "  {}\n", line.trim());
            }
        }
    }

    Ok(out.trim_end().to_string())
}

// ── updates ───────────────────────────────────────────────────────────────────

fn inspect_updates() -> Result<String, String> {
    let mut out = String::from("Host inspection: updates\n\n");

    #[cfg(target_os = "windows")]
    {
        // Last installed update via COM
        let script = r#"
try {
    $sess = New-Object -ComObject Microsoft.Update.Session
    $searcher = $sess.CreateUpdateSearcher()
    $count = $searcher.GetTotalHistoryCount()
    if ($count -gt 0) {
        $latest = $searcher.QueryHistory(0, 1) | Select-Object -First 1
        $latest.Date.ToString("yyyy-MM-dd HH:mm") + "|LAST_INSTALL"
    } else { "NONE|LAST_INSTALL" }
} catch { "ERROR:" + $_.Exception.Message + "|LAST_INSTALL" }
"#;
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
        {
            let raw = String::from_utf8_lossy(&o.stdout);
            let text = raw.trim();
            if text.starts_with("ERROR:") {
                out.push_str("Last update install: (unable to query)\n");
            } else if text.contains("NONE") {
                out.push_str("Last update install: No update history found\n");
            } else {
                let date = text.replace("|LAST_INSTALL", "");
                let _ = writeln!(out, "Last update install: {date}");
            }
        }

        // Pending updates count
        let pending_script = r#"
try {
    $sess = New-Object -ComObject Microsoft.Update.Session
    $searcher = $sess.CreateUpdateSearcher()
    $results = $searcher.Search("IsInstalled=0 and IsHidden=0 and Type='Software'")
    $results.Updates.Count.ToString() + "|PENDING"
} catch { "ERROR:" + $_.Exception.Message + "|PENDING" }
"#;
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", pending_script])
            .output()
        {
            let raw = String::from_utf8_lossy(&o.stdout);
            let text = raw.trim();
            if text.starts_with("ERROR:") {
                out.push_str("Pending updates: (unable to query via COM — try opening Windows Update manually)\n");
            } else {
                let count: i64 = text.replace("|PENDING", "").trim().parse().unwrap_or(-1);
                if count == 0 {
                    out.push_str("Pending updates: Up to date — no updates waiting\n");
                } else if count > 0 {
                    let _ = writeln!(out, "Pending updates: {count} update(s) available");
                    out.push_str(
                        "  → Open Windows Update (Settings > Windows Update) to install\n",
                    );
                }
            }
        }

        // Windows Update service state
        let svc_script = r#"
$svc = Get-Service -Name wuauserv -ErrorAction SilentlyContinue
if ($svc) { $svc.Status.ToString() } else { "NOT_FOUND" }
"#;
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", svc_script])
            .output()
        {
            let raw = String::from_utf8_lossy(&o.stdout);
            let status = raw.trim();
            let _ = writeln!(out, "Windows Update service: {status}");
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let apt_out = Command::new("apt").args(["list", "--upgradable"]).output();
        let mut found = false;
        if let Ok(o) = apt_out {
            let text = String::from_utf8_lossy(&o.stdout);
            let lines: Vec<&str> = text
                .lines()
                .filter(|l| l.contains('/') && !l.contains("Listing"))
                .collect();
            if !lines.is_empty() {
                let _ = write!(out, "{} package(s) can be upgraded (apt)\n", lines.len());
                out.push_str("  → Run: sudo apt upgrade\n");
                found = true;
            }
        }
        if !found {
            if let Ok(o) = Command::new("dnf")
                .args(["check-update", "--quiet"])
                .output()
            {
                let text = String::from_utf8_lossy(&o.stdout);
                let count = text
                    .lines()
                    .filter(|l| !l.is_empty() && !l.starts_with('!'))
                    .count();
                if count > 0 {
                    let _ = write!(out, "{count} package(s) can be upgraded (dnf)\n");
                    out.push_str("  → Run: sudo dnf upgrade\n");
                } else {
                    out.push_str("System is up to date.\n");
                }
            } else {
                out.push_str("Could not query package manager for updates.\n");
            }
        }
    }

    Ok(out.trim_end().to_string())
}

// ── security ──────────────────────────────────────────────────────────────────

fn inspect_security() -> Result<String, String> {
    let mut out = String::from("Host inspection: security\n\n");

    #[cfg(target_os = "windows")]
    {
        // Windows Defender status
        let defender_script = r#"
try {
    $status = Get-MpComputerStatus -ErrorAction Stop
    "RTP:" + $status.RealTimeProtectionEnabled + "|SCAN:" + $status.QuickScanEndTime.ToString("yyyy-MM-dd HH:mm") + "|VER:" + $status.AntivirusSignatureVersion + "|AGE:" + $status.AntivirusSignatureAge
} catch { "ERROR:" + $_.Exception.Message }
"#;
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", defender_script])
            .output()
        {
            let raw = String::from_utf8_lossy(&o.stdout);
            let text = raw.trim();
            if text.starts_with("ERROR:") {
                let _ = writeln!(out, "Windows Defender: unable to query — {text}");
            } else {
                let get = |key: &str| -> String {
                    text.split('|')
                        .find(|s| s.starts_with(key))
                        .and_then(|s| s.split_once(':').map(|x| x.1))
                        .unwrap_or("unknown")
                        .to_string()
                };
                let rtp = get("RTP");
                let last_scan = {
                    // SCAN field has a colon in the time, so grab everything after "SCAN:"
                    text.split('|')
                        .find(|s| s.starts_with("SCAN:"))
                        .and_then(|s| s.get(5..))
                        .unwrap_or("unknown")
                        .to_string()
                };
                let def_ver = get("VER");
                let age_days: i64 = get("AGE").parse().unwrap_or(-1);

                let rtp_label = if rtp == "True" {
                    "ENABLED"
                } else {
                    "DISABLED [!]"
                };
                let _ = writeln!(out, "Windows Defender real-time protection: {rtp_label}");
                let _ = writeln!(out, "Last quick scan: {last_scan}");
                let _ = writeln!(out, "Signature version: {def_ver}");
                if age_days >= 0 {
                    let freshness = if age_days == 0 {
                        "up to date".to_string()
                    } else if age_days <= 3 {
                        format!("{age_days} day(s) old — OK")
                    } else if age_days <= 7 {
                        format!("{age_days} day(s) old — consider updating")
                    } else {
                        format!("{age_days} day(s) old — [!] STALE, run Windows Update")
                    };
                    let _ = writeln!(out, "Signature age: {freshness}");
                }
                if rtp != "True" {
                    out.push_str(
                        "\n[!] Real-time protection is OFF — your PC is not actively protected.\n",
                    );
                    out.push_str(
                        "    → Open Windows Security > Virus & threat protection to re-enable.\n",
                    );
                }
            }
        }

        out.push('\n');

        // Windows Firewall state
        let fw_script = r#"
try {
    Get-NetFirewallProfile -ErrorAction Stop | ForEach-Object { $_.Name + ":" + $_.Enabled }
} catch { "ERROR:" + $_.Exception.Message }
"#;
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", fw_script])
            .output()
        {
            let raw = String::from_utf8_lossy(&o.stdout);
            let text = raw.trim();
            if !text.starts_with("ERROR:") && !text.is_empty() {
                out.push_str("Windows Firewall:\n");
                for line in text.lines() {
                    if let Some((name, enabled)) = line.split_once(':') {
                        let state = if enabled.trim() == "True" {
                            "ON"
                        } else {
                            "OFF [!]"
                        };
                        let _ = writeln!(out, "  {name}: {state}");
                    }
                }
                out.push('\n');
            }
        }

        // Windows activation status
        let act_script = r#"
try {
    $lic = Get-CimInstance SoftwareLicensingProduct -Filter "Name like 'Windows%' and LicenseStatus=1" -ErrorAction Stop | Select-Object -First 1
    if ($lic) { "ACTIVATED" } else { "NOT_ACTIVATED" }
} catch { "UNKNOWN" }
"#;
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", act_script])
            .output()
        {
            let raw = String::from_utf8_lossy(&o.stdout);
            match raw.trim() {
                "ACTIVATED" => out.push_str("Windows activation: Activated\n"),
                "NOT_ACTIVATED" => out.push_str("Windows activation: [!] NOT ACTIVATED\n"),
                _ => out.push_str("Windows activation: Unable to determine\n"),
            }
        }

        // UAC state
        let uac_script = r#"
$val = Get-ItemPropertyValue 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System' -Name EnableLUA -ErrorAction SilentlyContinue
if ($val -eq 1) { "ON" } else { "OFF" }
"#;
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", uac_script])
            .output()
        {
            let raw = String::from_utf8_lossy(&o.stdout);
            let state = raw.trim();
            let label = if state == "ON" {
                "Enabled"
            } else {
                "DISABLED [!] — recommended to re-enable via secpol.msc"
            };
            let _ = writeln!(out, "UAC (User Account Control): {label}");
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        if let Ok(o) = Command::new("ufw").arg("status").output() {
            let text = String::from_utf8_lossy(&o.stdout);
            let _ = write!(out, "UFW: {}\n", text.lines().next().unwrap_or("unknown"));
        }
        if let Ok(cfg) = std::fs::read_to_string("/etc/selinux/config") {
            if let Some(line) = cfg.lines().find(|l| l.starts_with("SELINUX=")) {
                let _ = write!(out, "{line}\n");
            }
        }
    }

    Ok(out.trim_end().to_string())
}

// ── pending_reboot ────────────────────────────────────────────────────────────

fn inspect_pending_reboot() -> Result<String, String> {
    let mut out = String::from("Host inspection: pending_reboot\n\n");

    #[cfg(target_os = "windows")]
    {
        let script = r#"
$reasons = @()
if (Test-Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired') {
    $reasons += "Windows Update requires a restart"
}
if (Test-Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\RebootPending') {
    $reasons += "Windows component install/update requires a restart"
}
$pfro = Get-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager' -Name PendingFileRenameOperations -ErrorAction SilentlyContinue
if ($pfro -and $pfro.PendingFileRenameOperations) {
    $reasons += "Pending file rename operations (driver or system file replacement)"
}
if ($reasons.Count -eq 0) { "NO_REBOOT_NEEDED" } else { $reasons -join "|REASON|" }
"#;
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
            .map_err(|e| format!("pending_reboot: {e}"))?;

        let raw = String::from_utf8_lossy(&output.stdout);
        let text = raw.trim();

        if text == "NO_REBOOT_NEEDED" {
            out.push_str("No restart required — system is up to date and stable.\n");
        } else if text.is_empty() {
            out.push_str("Could not determine reboot status.\n");
        } else {
            out.push_str("[!] A system restart is pending:\n\n");
            for reason in text.split("|REASON|") {
                let _ = writeln!(out, "  • {}", reason.trim());
            }
            out.push_str("\nRecommendation: Save your work and restart when convenient.\n");
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        if std::path::Path::new("/var/run/reboot-required").exists() {
            out.push_str("[!] A restart is required (see /var/run/reboot-required)\n");
            if let Ok(pkgs) = std::fs::read_to_string("/var/run/reboot-required.pkgs") {
                out.push_str("Packages requiring restart:\n");
                for p in pkgs.lines().take(10) {
                    let _ = write!(out, "  • {p}\n");
                }
            }
        } else {
            out.push_str("No restart required.\n");
        }
    }

    Ok(out.trim_end().to_string())
}

// ── disk_health ───────────────────────────────────────────────────────────────

fn inspect_disk_health() -> Result<String, String> {
    let mut out = String::from("Host inspection: disk_health\n\n");

    #[cfg(target_os = "windows")]
    {
        let script = r#"
try {
    $disks = Get-PhysicalDisk -ErrorAction Stop
    foreach ($d in $disks) {
        $size_gb = [math]::Round($d.Size / 1GB, 0)
        $d.FriendlyName + "|" + $d.MediaType + "|" + $size_gb + "GB|" + $d.HealthStatus + "|" + $d.OperationalStatus
    }
} catch { "ERROR:" + $_.Exception.Message }
"#;
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
            .map_err(|e| format!("disk_health: {e}"))?;

        let raw = String::from_utf8_lossy(&output.stdout);
        let text = raw.trim();

        if text.starts_with("ERROR:") {
            let _ = writeln!(out, "Unable to query disk health: {text}");
            out.push_str("This may require running as administrator.\n");
        } else if text.is_empty() {
            out.push_str("No physical disks found.\n");
        } else {
            out.push_str("Physical Drive Health:\n\n");
            for line in text.lines() {
                let mut it = line.splitn(5, '|');
                if let (Some(name), Some(media), Some(size), Some(health)) =
                    (it.next(), it.next(), it.next(), it.next())
                {
                    let op_status = it.next().unwrap_or("");
                    let health_label = match health.trim() {
                        "Healthy" => "OK",
                        "Warning" => "[!] WARNING",
                        "Unhealthy" => "[!!] UNHEALTHY — BACK UP YOUR DATA NOW",
                        other => other,
                    };
                    let _ = writeln!(out, "  {name}");
                    let _ = writeln!(out, "    Type: {media} | Size: {size}");
                    let _ = writeln!(out, "    Health: {health_label}");
                    if !op_status.is_empty() {
                        let _ = writeln!(out, "    Status: {op_status}");
                    }
                    out.push('\n');
                }
            }
        }

        // SMART failure prediction (best-effort, may need admin)
        let smart_script = r#"
try {
    Get-WmiObject -Class MSStorageDriver_FailurePredictStatus -Namespace root\wmi -ErrorAction Stop |
        ForEach-Object { $_.InstanceName + "|" + $_.PredictFailure }
} catch { "" }
"#;
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", smart_script])
            .output()
        {
            let raw2 = String::from_utf8_lossy(&o.stdout);
            let text2 = raw2.trim();
            if !text2.is_empty() {
                let failures: Vec<&str> = text2.lines().filter(|l| l.contains("|True")).collect();
                if failures.is_empty() {
                    out.push_str("SMART failure prediction: No failures predicted\n");
                } else {
                    out.push_str("[!!] SMART failure predicted on one or more drives:\n");
                    for f in failures {
                        let name = f.split('|').next().unwrap_or(f);
                        let _ = writeln!(out, "  • {name}");
                    }
                    out.push_str(
                        "\nBack up your data immediately and replace the failing drive.\n",
                    );
                }
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        if let Ok(o) = Command::new("lsblk")
            .args(["-d", "-o", "NAME,SIZE,TYPE,ROTA,MODEL"])
            .output()
        {
            let text = String::from_utf8_lossy(&o.stdout);
            out.push_str("Block devices:\n");
            out.push_str(text.trim());
            out.push('\n');
        }
        if let Ok(scan) = Command::new("smartctl").args(["--scan"]).output() {
            let devices = String::from_utf8_lossy(&scan.stdout);
            for dev_line in devices.lines().take(4) {
                let dev = dev_line.split_whitespace().next().unwrap_or("");
                if dev.is_empty() {
                    continue;
                }
                if let Ok(o) = Command::new("smartctl").args(["-H", dev]).output() {
                    let health = String::from_utf8_lossy(&o.stdout);
                    if let Some(line) = health.lines().find(|l| l.contains("SMART overall-health"))
                    {
                        let _ = write!(out, "{dev}: {}\n", line.trim());
                    }
                }
            }
        } else {
            out.push_str("(install smartmontools for SMART health data)\n");
        }
    }

    Ok(out.trim_end().to_string())
}

// ── battery ───────────────────────────────────────────────────────────────────

fn inspect_battery() -> Result<String, String> {
    let mut out = String::from("Host inspection: battery\n\n");

    #[cfg(target_os = "windows")]
    {
        let script = r#"
try {
    $bats = Get-CimInstance -ClassName Win32_Battery -ErrorAction SilentlyContinue
    if (-not $bats) { "NO_BATTERY"; exit }
    
    # Modern Battery Health (Cycle count + Capacity health)
    $static = Get-CimInstance -Namespace root/WMI -ClassName BatteryStaticData -ErrorAction SilentlyContinue
    $full = Get-CimInstance -Namespace root/WMI -ClassName BatteryFullCapacity -ErrorAction SilentlyContinue 
    $status = Get-CimInstance -Namespace root/WMI -ClassName BatteryStatus -ErrorAction SilentlyContinue

    foreach ($b in $bats) {
        $state = switch ($b.BatteryStatus) {
            1 { "Discharging" }
            2 { "AC Power (Fully Charged)" }
            3 { "AC Power (Charging)" }
            default { "Status $($b.BatteryStatus)" }
        }
        
        $cycles = if ($status) { $status.CycleCount } else { "unknown" }
        $health = if ($static -and $full) {
             [math]::Round(($full.FullChargeCapacity / $static.DesignCapacity) * 100, 1)
        } else { "unknown" }

        $b.Name + "|" + $b.EstimatedChargeRemaining + "|" + $state + "|" + $cycles + "|" + $health
    }
} catch { "ERROR:" + $_.Exception.Message }
"#;
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
            .map_err(|e| format!("battery: {e}"))?;

        let raw = String::from_utf8_lossy(&output.stdout);
        let text = raw.trim();

        if text == "NO_BATTERY" {
            out.push_str("No battery detected — desktop or AC-only system.\n");
            return Ok(out.trim_end().to_string());
        }
        if text.starts_with("ERROR:") {
            let _ = writeln!(out, "Unable to query battery: {text}");
            return Ok(out.trim_end().to_string());
        }

        for line in text.lines() {
            let mut it = line.splitn(6, '|');
            if let (Some(name), Some(p1), Some(state), Some(cycles), Some(health)) =
                (it.next(), it.next(), it.next(), it.next(), it.next())
            {
                let charge: i64 = p1.parse().unwrap_or(-1);

                let _ = writeln!(out, "Battery: {name}");
                if charge >= 0 {
                    let bar_filled = (charge as usize * 20) / 100;
                    let _ = writeln!(
                        out,
                        "  Charge: [{}{}] {}%",
                        "#".repeat(bar_filled),
                        ".".repeat(20 - bar_filled),
                        charge
                    );
                }
                let _ = writeln!(out, "  Status: {state}");
                let _ = writeln!(out, "  Cycles: {cycles}");
                let _ = write!(out, "  Health: {health}% (Actual vs Design Capacity)\n\n");
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let power_path = std::path::Path::new("/sys/class/power_supply");
        let mut found = false;
        if power_path.exists() {
            if let Ok(entries) = std::fs::read_dir(power_path) {
                for entry in entries.flatten() {
                    let p = entry.path();
                    if let Ok(t) = std::fs::read_to_string(p.join("type")) {
                        if t.trim() == "Battery" {
                            found = true;
                            let name = p
                                .file_name()
                                .unwrap_or_default()
                                .to_string_lossy()
                                .to_string();
                            let _ = write!(out, "Battery: {name}\n");
                            let read = |f: &str| {
                                std::fs::read_to_string(p.join(f))
                                    .ok()
                                    .map(|s| s.trim().to_string())
                            };
                            if let Some(cap) = read("capacity") {
                                let _ = write!(out, "  Charge: {cap}%\n");
                            }
                            if let Some(status) = read("status") {
                                let _ = write!(out, "  Status: {status}\n");
                            }
                            if let (Some(full), Some(design)) =
                                (read("energy_full"), read("energy_full_design"))
                            {
                                if let (Ok(f), Ok(d)) = (full.parse::<f64>(), design.parse::<f64>())
                                {
                                    if d > 0.0 {
                                        let _ = write!(
                                            out,
                                            "  Wear level: {:.1}% of design capacity\n",
                                            (f / d) * 100.0
                                        );
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
        if !found {
            out.push_str("No battery found.\n");
        }
    }

    Ok(out.trim_end().to_string())
}

// ── recent_crashes ────────────────────────────────────────────────────────────

fn inspect_recent_crashes(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: recent_crashes\n\n");
    let n = max_entries.clamp(1, 30);

    #[cfg(target_os = "windows")]
    {
        // BSODs / unexpected shutdowns (EventID 41 = kernel power, 1001 = BugCheck)
        let bsod_script = format!(
            r#"
try {{
    $events = Get-WinEvent -FilterHashtable @{{LogName='System'; Id=41,1001}} -MaxEvents {n} -ErrorAction SilentlyContinue
    if ($events) {{
        $events | ForEach-Object {{
            $_.TimeCreated.ToString("yyyy-MM-dd HH:mm") + "|" + $_.Id + "|" + (($_.Message -split "[\r\n]")[0].Trim())
        }}
    }} else {{ "NO_BSOD" }}
}} catch {{ "ERROR:" + $_.Exception.Message }}"#
        );

        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", &bsod_script])
            .output()
        {
            let raw = String::from_utf8_lossy(&o.stdout);
            let text = raw.trim();
            if text == "NO_BSOD" {
                out.push_str("System crashes (BSOD/kernel): None in recent history\n");
            } else if text.starts_with("ERROR:") {
                out.push_str("System crashes: unable to query\n");
            } else {
                out.push_str("System crashes / unexpected shutdowns:\n");
                for line in text.lines() {
                    let mut it = line.splitn(3, '|');
                    if let (Some(time), Some(id), Some(msg)) = (it.next(), it.next(), it.next()) {
                        let label = if id == "41" {
                            "Unexpected shutdown"
                        } else {
                            "BSOD (BugCheck)"
                        };
                        let _ = writeln!(out, "  [{time}] {label}: {msg}");
                    }
                }
                out.push('\n');
            }
        }

        // Application crashes (EventID 1000 = app crash, 1002 = app hang)
        let app_script = format!(
            r#"
try {{
    $crashes = Get-WinEvent -FilterHashtable @{{LogName='Application'; Id=1000,1002}} -MaxEvents {n} -ErrorAction SilentlyContinue
    if ($crashes) {{
        $crashes | ForEach-Object {{
            $_.TimeCreated.ToString("yyyy-MM-dd HH:mm") + "|" + (($_.Message -split "[\r\n]")[0].Trim())
        }}
    }} else {{ "NO_CRASHES" }}
}} catch {{ "ERROR_APP:" + $_.Exception.Message }}"#
        );

        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", &app_script])
            .output()
        {
            let raw = String::from_utf8_lossy(&o.stdout);
            let text = raw.trim();
            if text == "NO_CRASHES" {
                out.push_str("Application crashes: None in recent history\n");
            } else if text.starts_with("ERROR_APP:") {
                out.push_str("Application crashes: unable to query\n");
            } else {
                out.push_str("Application crashes:\n");
                for line in text.lines().take(n) {
                    let mut it = line.splitn(2, '|');
                    if let (Some(a), Some(b)) = (it.next(), it.next()) {
                        let _ = writeln!(out, "  [{}] {}", a, b);
                    }
                }
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let n_str = n.to_string();
        if let Ok(o) = Command::new("journalctl")
            .args(["-k", "--no-pager", "-n", &n_str, "-p", "0..2"])
            .output()
        {
            let text = String::from_utf8_lossy(&o.stdout);
            let trimmed = text.trim();
            if trimmed.is_empty() || trimmed.contains("No entries") {
                out.push_str("No kernel panics or critical crashes found.\n");
            } else {
                out.push_str("Kernel critical events:\n");
                out.push_str(trimmed);
                out.push('\n');
            }
        }
        if let Ok(o) = Command::new("coredumpctl")
            .args(["list", "--no-pager"])
            .output()
        {
            let text = String::from_utf8_lossy(&o.stdout);
            let count = text
                .lines()
                .filter(|l| !l.trim().is_empty() && !l.starts_with("TIME"))
                .count();
            if count > 0 {
                let _ = write!(
                    out,
                    "\nCore dumps on file: {count}\n  → Run: coredumpctl list\n"
                );
            }
        }
    }

    Ok(out.trim_end().to_string())
}

// ── scheduled_tasks ───────────────────────────────────────────────────────────

fn inspect_scheduled_tasks(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: scheduled_tasks\n\n");
    let n = max_entries.clamp(1, 30);

    #[cfg(target_os = "windows")]
    {
        let script = format!(
            r#"
try {{
    $tasks = Get-ScheduledTask -ErrorAction Stop |
        Where-Object {{ $_.State -ne 'Disabled' }} |
        ForEach-Object {{
            $info = $_ | Get-ScheduledTaskInfo -ErrorAction SilentlyContinue
            $lastRun = if ($info -and $info.LastRunTime -and $info.LastRunTime.Year -gt 2000) {{
                $info.LastRunTime.ToString("yyyy-MM-dd HH:mm")
            }} else {{ "never" }}
            $res = if ($info) {{ "0x{{0:x}}" -f $info.LastTaskResult }} else {{ "---" }}
            $exec = ($_.Actions | Select-Object -First 1).Execute
            if (-not $exec) {{ $exec = "(no exec)" }}
            $_.TaskName + "|" + $_.TaskPath + "|" + $_.State + "|" + $lastRun + "|" + $res + "|" + $exec
        }}
    $tasks | Select-Object -First {n}
}} catch {{ "ERROR:" + $_.Exception.Message }}"#
        );

        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", &script])
            .output()
            .map_err(|e| format!("scheduled_tasks: {e}"))?;

        let raw = String::from_utf8_lossy(&output.stdout);
        let text = raw.trim();

        if text.starts_with("ERROR:") {
            let _ = writeln!(out, "Unable to query scheduled tasks: {text}");
        } else if text.is_empty() {
            out.push_str("No active scheduled tasks found.\n");
        } else {
            let _ = write!(out, "Active scheduled tasks (up to {n}):\n\n");
            for line in text.lines() {
                let mut it = line.splitn(6, '|');
                if let (Some(name), Some(path), Some(state), Some(last), Some(res)) =
                    (it.next(), it.next(), it.next(), it.next(), it.next())
                {
                    let exec = it.next().unwrap_or("").trim();
                    let display_path = path.trim_matches('\\');
                    let display_path = if display_path.is_empty() {
                        "Root"
                    } else {
                        display_path
                    };
                    let _ = writeln!(out, "  {name} [{display_path}]");
                    let _ = writeln!(out, "    State: {state} | Last run: {last} | Result: {res}");
                    if !exec.is_empty() && exec != "(no exec)" {
                        let short = if exec.len() > 80 {
                            safe_head(exec, 80)
                        } else {
                            exec
                        };
                        let _ = writeln!(out, "    Runs: {short}");
                    }
                }
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        if let Ok(o) = Command::new("systemctl")
            .args(["list-timers", "--no-pager", "--all"])
            .output()
        {
            let text = String::from_utf8_lossy(&o.stdout);
            out.push_str("Systemd timers:\n");
            for l in text
                .lines()
                .filter(|l| {
                    !l.trim().is_empty() && !l.starts_with("NEXT") && !l.starts_with("timers")
                })
                .take(n)
            {
                let _ = write!(out, "  {l}\n");
            }
            out.push('\n');
        }
        if let Ok(o) = Command::new("crontab").arg("-l").output() {
            let text = String::from_utf8_lossy(&o.stdout);
            let jobs: Vec<&str> = text
                .lines()
                .filter(|l| !l.trim().is_empty() && !l.starts_with('#'))
                .collect();
            if !jobs.is_empty() {
                out.push_str("User crontab:\n");
                for j in jobs.iter().take(n) {
                    let _ = write!(out, "  {j}\n");
                }
            }
        }
    }

    Ok(out.trim_end().to_string())
}

// ── dev_conflicts ─────────────────────────────────────────────────────────────

fn inspect_dev_conflicts() -> Result<String, String> {
    let mut out = String::from("Host inspection: dev_conflicts\n\n");
    let mut conflicts: Vec<String> = Vec::with_capacity(4);
    let mut notes: Vec<String> = Vec::with_capacity(4);

    // ── Node.js / version managers ────────────────────────────────────────────
    {
        let node_ver = Command::new("node")
            .arg("--version")
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .map(|s| s.trim().to_string());
        let nvm_active = Command::new("nvm")
            .arg("current")
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .map(|s| s.trim().to_string())
            .filter(|s| !s.is_empty() && !s.contains("none") && !s.contains("No current"));
        let fnm_active = Command::new("fnm")
            .arg("current")
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .map(|s| s.trim().to_string())
            .filter(|s| !s.is_empty() && !s.contains("none"));
        let volta_active = Command::new("volta")
            .args(["which", "node"])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .map(|s| s.trim().to_string())
            .filter(|s| !s.is_empty());

        out.push_str("Node.js:\n");
        if let Some(ref v) = node_ver {
            let _ = writeln!(out, "  Active: {v}");
        } else {
            out.push_str("  Not installed\n");
        }
        let managers: Vec<&str> = [
            nvm_active.as_deref(),
            fnm_active.as_deref(),
            volta_active.as_deref(),
        ]
        .iter()
        .filter_map(|x| *x)
        .collect();
        if managers.len() > 1 {
            conflicts.push("Multiple Node.js version managers detected (nvm/fnm/volta). Only one should be active to avoid PATH conflicts.".to_string());
        } else if !managers.is_empty() {
            let _ = writeln!(out, "  Version manager: {}", managers[0]);
        }
        out.push('\n');
    }

    // ── Python ────────────────────────────────────────────────────────────────
    {
        let py3 = Command::new("python3")
            .arg("--version")
            .output()
            .ok()
            .and_then(|o| {
                let stdout = String::from_utf8_lossy(&o.stdout).trim().to_string();
                let stderr = String::from_utf8_lossy(&o.stderr).trim().to_string();
                let v = if stdout.is_empty() { stderr } else { stdout };
                if v.is_empty() {
                    None
                } else {
                    Some(v)
                }
            });
        let py = Command::new("python")
            .arg("--version")
            .output()
            .ok()
            .and_then(|o| {
                let stdout = String::from_utf8_lossy(&o.stdout).trim().to_string();
                let stderr = String::from_utf8_lossy(&o.stderr).trim().to_string();
                let v = if stdout.is_empty() { stderr } else { stdout };
                if v.is_empty() {
                    None
                } else {
                    Some(v)
                }
            });
        let pyenv = Command::new("pyenv")
            .arg("version")
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .map(|s| s.trim().to_string())
            .filter(|s| !s.is_empty());
        let conda_env = std::env::var("CONDA_DEFAULT_ENV").ok();

        out.push_str("Python:\n");
        match (&py3, &py) {
            (Some(v3), Some(v)) if v3 != v => {
                let _ = write!(out, "  python3: {v3}\n  python:  {v}\n");
                if v.contains("2.") {
                    conflicts.push(
                        "python and python3 point to different major versions (2.x vs 3.x). Scripts using 'python' may break unexpectedly.".to_string()
                    );
                } else {
                    notes.push(
                        "python and python3 resolve to different minor versions.".to_string(),
                    );
                }
            }
            (Some(v3), None) => {
                let _ = writeln!(out, "  python3: {v3}");
            }
            (None, Some(v)) => {
                let _ = writeln!(out, "  python: {v}");
            }
            (Some(v3), Some(_)) => {
                let _ = writeln!(out, "  {v3}");
            }
            (None, None) => out.push_str("  Not installed\n"),
        }
        if let Some(ref pe) = pyenv {
            let _ = writeln!(out, "  pyenv: {pe}");
        }
        if let Some(env) = conda_env {
            if env == "base" {
                notes.push("Conda base environment is active — may shadow system Python. Run 'conda deactivate' if unexpected.".to_string());
            } else {
                let _ = writeln!(out, "  conda env: {env}");
            }
        }
        out.push('\n');
    }

    // ── Rust / Cargo ──────────────────────────────────────────────────────────
    {
        let toolchain = Command::new("rustup")
            .args(["show", "active-toolchain"])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .map(|s| s.trim().to_string())
            .filter(|s| !s.is_empty());
        let cargo_ver = Command::new("cargo")
            .arg("--version")
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .map(|s| s.trim().to_string());
        let rustc_ver = Command::new("rustc")
            .arg("--version")
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .map(|s| s.trim().to_string());

        out.push_str("Rust:\n");
        if let Some(ref t) = toolchain {
            let _ = writeln!(out, "  Active toolchain: {t}");
        }
        if let Some(ref c) = cargo_ver {
            let _ = writeln!(out, "  {c}");
        }
        if let Some(ref r) = rustc_ver {
            let _ = writeln!(out, "  {r}");
        }
        if cargo_ver.is_none() && rustc_ver.is_none() {
            out.push_str("  Not installed\n");
        }

        // Detect system rust that might shadow rustup
        #[cfg(not(target_os = "windows"))]
        if let Ok(o) = Command::new("which").arg("rustc").output() {
            let path = String::from_utf8_lossy(&o.stdout).trim().to_string();
            if !path.is_empty() && !path.contains(".cargo") && !path.contains("rustup") {
                conflicts.push(format!(
                    "rustc found at non-rustup path '{path}' — may conflict with rustup-managed toolchain"
                ));
            }
        }
        out.push('\n');
    }

    // ── Git ───────────────────────────────────────────────────────────────────
    {
        let git_ver = Command::new("git")
            .arg("--version")
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .map(|s| s.trim().to_string());
        out.push_str("Git:\n");
        if let Some(ref v) = git_ver {
            let _ = writeln!(out, "  {v}");
            let email = Command::new("git")
                .args(["config", "--global", "user.email"])
                .output()
                .ok()
                .and_then(|o| String::from_utf8(o.stdout).ok())
                .map(|s| s.trim().to_string());
            if let Some(ref e) = email {
                if e.is_empty() {
                    notes.push("Git user.email is not configured globally — commits may fail or use wrong identity.".to_string());
                } else {
                    let _ = writeln!(out, "  user.email: {e}");
                }
            }
            let gpg_sign = Command::new("git")
                .args(["config", "--global", "commit.gpgsign"])
                .output()
                .ok()
                .and_then(|o| String::from_utf8(o.stdout).ok())
                .map(|s| s.trim().to_string());
            if gpg_sign.as_deref() == Some("true") {
                let key = Command::new("git")
                    .args(["config", "--global", "user.signingkey"])
                    .output()
                    .ok()
                    .and_then(|o| String::from_utf8(o.stdout).ok())
                    .map(|s| s.trim().to_string());
                if key.as_deref().map(|k| k.is_empty()).unwrap_or(true) {
                    conflicts.push("Git commit signing is enabled but no signing key is configured — commits will fail.".to_string());
                }
            }
        } else {
            out.push_str("  Not installed\n");
        }
        out.push('\n');
    }

    // ── PATH duplicates ───────────────────────────────────────────────────────
    {
        let path_env = std::env::var("PATH").unwrap_or_default();
        let sep = if cfg!(windows) { ';' } else { ':' };
        let mut seen = HashSet::new();
        let mut dupes: Vec<String> = Vec::new();
        for p in path_env.split(sep) {
            let norm = p.trim().to_lowercase();
            if !norm.is_empty() && !seen.insert(norm) {
                dupes.push(p.to_string());
            }
        }
        if !dupes.is_empty() {
            let shown: Vec<&str> = dupes.iter().take(3).map(|s| s.as_str()).collect();
            notes.push(format!(
                "Duplicate PATH entries: {} {}",
                shown.join(", "),
                if dupes.len() > 3 {
                    format!("+{} more", dupes.len() - 3)
                } else {
                    String::new()
                }
            ));
        }
    }

    // ── Summary ───────────────────────────────────────────────────────────────
    if conflicts.is_empty() && notes.is_empty() {
        out.push_str("No conflicts detected — dev environment looks clean.\n");
    } else {
        if !conflicts.is_empty() {
            out.push_str("CONFLICTS:\n");
            for c in &conflicts {
                let _ = writeln!(out, "  [!] {c}");
            }
            out.push('\n');
        }
        if !notes.is_empty() {
            out.push_str("NOTES:\n");
            for n in &notes {
                let _ = writeln!(out, "  [-] {n}");
            }
        }
    }

    Ok(out.trim_end().to_string())
}

// ── connectivity ──────────────────────────────────────────────────────────────

async fn inspect_public_ip() -> Result<String, String> {
    let mut out = String::from("Host inspection: public_ip\n\n");

    let client = reqwest::Client::builder()
        .timeout(std::time::Duration::from_secs(5))
        .build()
        .map_err(|e| format!("Failed to build HTTP client: {}", e))?;

    match client.get("https://api.ipify.org?format=json").send().await {
        Ok(resp) => {
            if let Ok(json) = resp.json::<serde_json::Value>().await {
                let ip = json.get("ip").and_then(|v| v.as_str()).unwrap_or("Unknown");
                let _ = writeln!(out, "Public IP: {}", ip);

                // Geo info
                if let Ok(geo_resp) = client
                    .get(format!("http://ip-api.com/json/{}", ip))
                    .send()
                    .await
                {
                    if let Ok(geo_json) = geo_resp.json::<serde_json::Value>().await {
                        if let (Some(city), Some(region), Some(country), Some(isp)) = (
                            geo_json.get("city").and_then(|v| v.as_str()),
                            geo_json.get("regionName").and_then(|v| v.as_str()),
                            geo_json.get("country").and_then(|v| v.as_str()),
                            geo_json.get("isp").and_then(|v| v.as_str()),
                        ) {
                            let _ = writeln!(out, "Location:  {}, {} ({})", city, region, country);
                            let _ = writeln!(out, "ISP:       {}", isp);
                        }
                    }
                }
            } else {
                out.push_str("Error: Failed to parse public IP response.\n");
            }
        }
        Err(e) => {
            let _ = writeln!(
                out,
                "Error: Failed to fetch public IP ({}). Check internet connectivity.",
                e
            );
        }
    }

    Ok(out)
}

fn inspect_ssl_cert(host: &str) -> Result<String, String> {
    let mut out = format!("Host inspection: ssl_cert (Target: {})\n\n", host);

    #[cfg(target_os = "windows")]
    {
        use std::process::Command;
        let script = format!(
            r#"$domain = "{host}"
try {{
    $tcpClient = New-Object System.Net.Sockets.TcpClient($domain, 443)
    $sslStream = New-Object System.Net.Security.SslStream($tcpClient.GetStream(), $false, ({{ $true }} -as [System.Net.Security.RemoteCertificateValidationCallback]))
    $sslStream.AuthenticateAsClient($domain)
    $cert = $sslStream.RemoteCertificate
    $tcpClient.Close()
    if ($cert) {{
        $cert2 = New-Object System.Security.Cryptography.X509Certificates.X509Certificate2($cert)
        $cert2 | Select-Object Subject, Issuer, NotBefore, NotAfter, Thumbprint, SerialNumber | ConvertTo-Json
    }} else {{
        "null"
    }}
}} catch {{
    "ERROR:" + $_.Exception.Message
}}"#
        );

        let ps_out = Command::new("powershell")
            .args(["-NoProfile", "-NonInteractive", "-Command", &script])
            .output()
            .map_err(|e| format!("powershell launch failed: {e}"))?;

        let text = String::from_utf8_lossy(&ps_out.stdout).trim().to_string();
        if text.starts_with("ERROR:") {
            let _ = writeln!(out, "Error: {}", text.trim_start_matches("ERROR:"));
        } else if text == "null" || text.is_empty() {
            out.push_str("Error: Could not retrieve certificate. Target may be unreachable or not using SSL.\n");
        } else if let Ok(json) = serde_json::from_str::<serde_json::Value>(&text) {
            if let Some(obj) = json.as_object() {
                for (k, v) in obj {
                    let val_str = v.as_str().unwrap_or("");
                    let _ = writeln!(out, "{:<12}: {}", k, val_str);
                }

                if let Some(not_after_raw) = obj.get("NotAfter").and_then(|v| v.as_str()) {
                    if not_after_raw.starts_with("/Date(") {
                        let ts = not_after_raw
                            .trim_start_matches("/Date(")
                            .trim_end_matches(")/")
                            .parse::<i64>()
                            .unwrap_or(0);
                        let expiry =
                            chrono::DateTime::from_timestamp(ts / 1000, 0).unwrap_or_default();
                        let now = chrono::Utc::now();
                        let days_left = expiry.signed_duration_since(now).num_days();
                        if days_left < 0 {
                            out.push_str("\nSTATUS: [!!] EXPIRED\n");
                        } else if days_left < 30 {
                            let _ = write!(
                                out,
                                "\nSTATUS: [!] EXPIRING SOON ({} days left)\n",
                                days_left
                            );
                        } else {
                            let _ = write!(out, "\nSTATUS: Valid ({} days left)\n", days_left);
                        }
                    } else if let Ok(expiry) = chrono::DateTime::parse_from_rfc3339(not_after_raw) {
                        let now = chrono::Utc::now();
                        let days_left = expiry.signed_duration_since(now).num_days();
                        if days_left < 0 {
                            out.push_str("\nSTATUS: [!!] EXPIRED\n");
                        } else if days_left < 30 {
                            let _ = write!(
                                out,
                                "\nSTATUS: [!] EXPIRING SOON ({} days left)\n",
                                days_left
                            );
                        } else {
                            let _ = write!(out, "\nSTATUS: Valid ({} days left)\n", days_left);
                        }
                    }
                }
            }
        } else {
            let _ = writeln!(out, "Raw Output: {}", text);
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        out.push_str(
            "Note: Deep SSL inspection currently optimized for Windows (PowerShell/SslStream).\n",
        );
    }

    Ok(out)
}

async fn inspect_data_audit(path: PathBuf, _max_entries: usize) -> Result<String, String> {
    let mut out = format!("Host inspection: data_audit (Path: {:?})\n\n", path);

    if !path.exists() {
        return Err(format!("File not found: {:?}", path));
    }
    if !path.is_file() {
        return Err(format!("Not a file: {:?}", path));
    }

    let file_size = std::fs::metadata(&path).map(|m| m.len()).unwrap_or(0);
    let _ = writeln!(
        out,
        "File Size: {} bytes ({:.2} MB)",
        file_size,
        file_size as f64 / 1_048_576.0
    );

    let ext = path
        .extension()
        .and_then(|s| s.to_str())
        .unwrap_or("")
        .to_lowercase();
    let _ = write!(out, "Format:    {}\n\n", ext.to_uppercase());

    match ext.as_str() {
        "csv" | "tsv" | "txt" | "log" => {
            let content = std::fs::read_to_string(&path)
                .map_err(|e| format!("Failed to read file: {}", e))?;
            let lines: Vec<&str> = content.lines().collect();
            let _ = writeln!(out, "Row Count: {} (total lines)", lines.len());

            if let Some(header) = lines.first() {
                out.push_str("Columns (Guessed from header):\n");
                let delimiter = if ext == "tsv" {
                    "\t"
                } else if header.contains(',') {
                    ","
                } else {
                    " "
                };
                for (i, col) in header.split(delimiter).map(|s| s.trim()).enumerate() {
                    let _ = writeln!(out, "  {}. {}", i + 1, col);
                }
            }

            out.push_str("\nSample Data (First 5 rows):\n");
            for line in lines.iter().take(6) {
                let _ = writeln!(out, "  {}", line);
            }
        }
        "json" => {
            let content = std::fs::read_to_string(&path)
                .map_err(|e| format!("Failed to read file: {}", e))?;
            if let Ok(json) = serde_json::from_str::<Value>(&content) {
                if let Some(arr) = json.as_array() {
                    let _ = writeln!(out, "Record Count: {}", arr.len());
                    if let Some(first) = arr.first() {
                        if let Some(obj) = first.as_object() {
                            out.push_str("Fields (from first record):\n");
                            for k in obj.keys() {
                                let _ = writeln!(out, "  - {}", k);
                            }
                        }
                    }
                    out.push_str("\nSample Record:\n");
                    out.push_str(&serde_json::to_string_pretty(&arr.first()).unwrap_or_default());
                } else if let Some(obj) = json.as_object() {
                    out.push_str("Top-level Keys:\n");
                    for k in obj.keys() {
                        let _ = writeln!(out, "  - {}", k);
                    }
                }
            } else {
                out.push_str("Error: Failed to parse as JSON.\n");
            }
        }
        "db" | "sqlite" | "sqlite3" => {
            out.push_str("SQLite Database detected.\n");
            out.push_str("Use `query_data` to execute SQL against this database.\n");
        }
        _ => {
            out.push_str("Unsupported format for deep audit. Showing first 10 lines:\n\n");
            let content = std::fs::read_to_string(&path)
                .map_err(|e| format!("Failed to read file: {}", e))?;
            for line in content.lines().take(10) {
                let _ = writeln!(out, "  {}", line);
            }
        }
    }

    Ok(out)
}

fn inspect_connectivity() -> Result<String, String> {
    let mut out = String::from("Host inspection: connectivity\n\n");

    #[cfg(target_os = "windows")]
    {
        let inet_script = r#"
try {
    $r = Test-NetConnection -ComputerName 8.8.8.8 -Port 53 -InformationLevel Quiet -WarningAction SilentlyContinue
    if ($r) { "REACHABLE" } else { "UNREACHABLE" }
} catch { "ERROR:" + $_.Exception.Message }
"#;
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", inet_script])
            .output()
        {
            let text = String::from_utf8_lossy(&o.stdout).trim().to_string();
            match text.as_str() {
                "REACHABLE" => out.push_str("Internet: reachable\n"),
                "UNREACHABLE" => out.push_str("Internet: unreachable [!]\n"),
                _ => {
                    let _ = writeln!(
                        out,
                        "Internet: {}",
                        text.trim_start_matches("ERROR:").trim()
                    );
                }
            }
        }

        let dns_script = r#"
try {
    Resolve-DnsName -Name "dns.google" -Type A -ErrorAction Stop | Out-Null
    "DNS:ok"
} catch { "DNS:fail:" + $_.Exception.Message }
"#;
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", dns_script])
            .output()
        {
            let text = String::from_utf8_lossy(&o.stdout).trim().to_string();
            if text == "DNS:ok" {
                out.push_str("DNS: resolving correctly\n");
            } else {
                let detail = text.trim_start_matches("DNS:fail:").trim();
                let _ = writeln!(out, "DNS: failed — {}", detail);
            }
        }

        let gw_script = r#"
(Get-NetRoute -DestinationPrefix '0.0.0.0/0' -ErrorAction SilentlyContinue | Sort-Object RouteMetric | Select-Object -First 1).NextHop
"#;
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", gw_script])
            .output()
        {
            let gw = String::from_utf8_lossy(&o.stdout).trim().to_string();
            if !gw.is_empty() && gw != "0.0.0.0" {
                let _ = writeln!(out, "Default gateway: {}", gw);
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let reachable = Command::new("ping")
            .args(["-c", "1", "-W", "2", "8.8.8.8"])
            .output()
            .map(|o| o.status.success())
            .unwrap_or(false);
        out.push_str(if reachable {
            "Internet: reachable\n"
        } else {
            "Internet: unreachable\n"
        });
        let dns_ok = Command::new("getent")
            .args(["hosts", "dns.google"])
            .output()
            .map(|o| o.status.success())
            .unwrap_or(false);
        out.push_str(if dns_ok {
            "DNS: resolving correctly\n"
        } else {
            "DNS: failed\n"
        });
        if let Ok(o) = Command::new("ip")
            .args(["route", "show", "default"])
            .output()
        {
            let text = String::from_utf8_lossy(&o.stdout);
            if let Some(line) = text.lines().next() {
                let _ = write!(out, "Default gateway: {}\n", line.trim());
            }
        }
    }

    Ok(out.trim_end().to_string())
}

// ── wifi ──────────────────────────────────────────────────────────────────────

fn inspect_wifi() -> Result<String, String> {
    let mut out = String::from("Host inspection: wifi\n\n");

    #[cfg(target_os = "windows")]
    {
        let output = Command::new("netsh")
            .args(["wlan", "show", "interfaces"])
            .output()
            .map_err(|e| format!("wifi: {e}"))?;
        let text = String::from_utf8_lossy(&output.stdout).into_owned();

        if text.contains("There is no wireless interface") || text.trim().is_empty() {
            out.push_str("No wireless interface detected on this machine.\n");
            return Ok(out.trim_end().to_string());
        }

        let fields = [
            ("SSID", "SSID"),
            ("State", "State"),
            ("Signal", "Signal"),
            ("Radio type", "Radio type"),
            ("Channel", "Channel"),
            ("Receive rate (Mbps)", "Download speed (Mbps)"),
            ("Transmit rate (Mbps)", "Upload speed (Mbps)"),
            ("Authentication", "Authentication"),
            ("Network type", "Network type"),
        ];

        let mut any = false;
        for line in text.lines() {
            let trimmed = line.trim();
            for (key, label) in &fields {
                if trimmed.starts_with(key) && trimmed.contains(':') {
                    let val = trimmed.split_once(':').map(|x| x.1).unwrap_or("").trim();
                    if !val.is_empty() {
                        let _ = writeln!(out, "  {label}: {val}");
                        any = true;
                    }
                }
            }
        }
        if !any {
            out.push_str("  (Wi-Fi adapter disconnected or no active connection)\n");
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        if let Ok(o) = Command::new("nmcli")
            .args(["-t", "-f", "DEVICE,TYPE,STATE,CONNECTION", "device"])
            .output()
        {
            let text = String::from_utf8_lossy(&o.stdout).into_owned();
            let lines: Vec<&str> = text.lines().filter(|l| l.contains(":wifi:")).collect();
            if lines.is_empty() {
                out.push_str("No Wi-Fi devices found.\n");
            } else {
                for l in lines {
                    let _ = write!(out, "  {l}\n");
                }
            }
        } else if let Ok(o) = Command::new("iwconfig").output() {
            let text = String::from_utf8_lossy(&o.stdout).into_owned();
            if !text.trim().is_empty() {
                out.push_str(text.trim());
                out.push('\n');
            }
        } else {
            out.push_str("No wireless tool available (install nmcli or wireless-tools).\n");
        }
    }

    Ok(out.trim_end().to_string())
}

// ── connections ───────────────────────────────────────────────────────────────

fn inspect_connections(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: connections\n\n");
    let n = max_entries.clamp(1, 25);

    #[cfg(target_os = "windows")]
    {
        let script = format!(
            r#"
try {{
    $procs = @{{}}
    Get-Process -ErrorAction SilentlyContinue | ForEach-Object {{ $procs[$_.Id] = $_.Name }}
    $all = Get-NetTCPConnection -State Established -ErrorAction SilentlyContinue |
        Sort-Object OwningProcess
    "TOTAL:" + $all.Count
    $all | Select-Object -First {n} | ForEach-Object {{
        $pname = if ($procs.ContainsKey($_.OwningProcess)) {{ $procs[$_.OwningProcess] }} else {{ "unknown" }}
        $pname + "|" + $_.OwningProcess + "|" + $_.LocalAddress + ":" + $_.LocalPort + "|" + $_.RemoteAddress + ":" + $_.RemotePort
    }}
}} catch {{ "ERROR:" + $_.Exception.Message }}"#
        );

        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", &script])
            .output()
            .map_err(|e| format!("connections: {e}"))?;

        let raw = String::from_utf8_lossy(&output.stdout);
        let text = raw.trim();

        if text.starts_with("ERROR:") {
            let _ = writeln!(out, "Unable to query connections: {text}");
        } else {
            let mut total = 0usize;
            let mut rows = Vec::new();
            for line in text.lines() {
                if let Some(rest) = line.strip_prefix("TOTAL:") {
                    total = rest.trim().parse().unwrap_or(0);
                } else {
                    rows.push(line);
                }
            }
            let _ = write!(out, "Established TCP connections: {total}\n\n");
            for row in &rows {
                let mut it = row.splitn(4, '|');
                if let (Some(p0), Some(p1), Some(p2), Some(p3)) =
                    (it.next(), it.next(), it.next(), it.next())
                {
                    let _ = writeln!(out, "  {:<15} (pid {:<5}) | {} → {}", p0, p1, p2, p3);
                }
            }
            if total > n {
                let _ = write!(
                    out,
                    "\n  ... {} more connections not shown\n",
                    total.saturating_sub(n)
                );
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        if let Ok(o) = Command::new("ss")
            .args(["-tnp", "state", "established"])
            .output()
        {
            let text = String::from_utf8_lossy(&o.stdout);
            let lines: Vec<&str> = text
                .lines()
                .skip(1)
                .filter(|l| !l.trim().is_empty())
                .collect();
            let _ = write!(out, "Established TCP connections: {}\n\n", lines.len());
            for line in lines.iter().take(n) {
                let _ = write!(out, "  {}\n", line.trim());
            }
            if lines.len() > n {
                let _ = write!(out, "\n  ... {} more not shown\n", lines.len() - n);
            }
        } else {
            out.push_str("ss not available — install iproute2\n");
        }
    }

    Ok(out.trim_end().to_string())
}

// ── vpn ───────────────────────────────────────────────────────────────────────

fn inspect_vpn() -> Result<String, String> {
    let mut out = String::from("Host inspection: vpn\n\n");

    #[cfg(target_os = "windows")]
    {
        let script = r#"
try {
    $vpn = Get-NetAdapter -ErrorAction Stop | Where-Object {
        $_.InterfaceDescription -match 'VPN|TAP|WireGuard|OpenVPN|Cisco|Palo Alto|GlobalProtect|Juniper|Pulse|NordVPN|ExpressVPN|Mullvad|ProtonVPN' -or
        $_.Name -match 'VPN|TAP|WireGuard|tun|ppp|wg\d'
    }
    if ($vpn) {
        foreach ($a in $vpn) {
            $a.Name + "|" + $a.InterfaceDescription + "|" + $a.Status + "|" + $a.MediaConnectionState
        }
    } else { "NONE" }
} catch { "ERROR:" + $_.Exception.Message }
"#;
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
            .map_err(|e| format!("vpn: {e}"))?;

        let raw = String::from_utf8_lossy(&output.stdout);
        let text = raw.trim();

        if text == "NONE" {
            out.push_str("No VPN adapters detected — no active VPN connection found.\n");
        } else if text.starts_with("ERROR:") {
            let _ = writeln!(out, "Unable to query adapters: {text}");
        } else {
            out.push_str("VPN adapters:\n\n");
            for line in text.lines() {
                let mut it = line.splitn(4, '|');
                if let (Some(name), Some(desc), Some(status)) = (it.next(), it.next(), it.next()) {
                    let media = it.next().unwrap_or("unknown");
                    let label = if status.trim() == "Up" {
                        "CONNECTED"
                    } else {
                        "disconnected"
                    };
                    let _ =
                        write!(out,
                        "  {name} [{label}]\n    {desc}\n    Status: {status} | Media: {media}\n\n"
                    );
                }
            }
        }

        // Windows built-in VPN connections
        let ras_script = r#"
try {
    $c = Get-VpnConnection -ErrorAction Stop
    if ($c) { foreach ($v in $c) { $v.Name + "|" + $v.ConnectionStatus + "|" + $v.ServerAddress } }
    else { "NO_RAS" }
} catch { "NO_RAS" }
"#;
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", ras_script])
            .output()
        {
            let t = String::from_utf8_lossy(&o.stdout).trim().to_string();
            if t != "NO_RAS" && !t.is_empty() {
                out.push_str("Windows VPN connections:\n");
                for line in t.lines() {
                    let mut it = line.splitn(3, '|');
                    if let (Some(name), Some(status)) = (it.next(), it.next()) {
                        let server = it.next().unwrap_or("");
                        let _ = writeln!(out, "  {name} → {server} [{status}]");
                    }
                }
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        if let Ok(o) = Command::new("ip").args(["link", "show"]).output() {
            let text = String::from_utf8_lossy(&o.stdout);
            let vpn_ifaces: Vec<&str> = text
                .lines()
                .filter(|l| {
                    l.contains("tun") || l.contains("tap") || l.contains(" wg") || l.contains("ppp")
                })
                .collect();
            if vpn_ifaces.is_empty() {
                out.push_str("No VPN interfaces (tun/tap/wg/ppp) detected.\n");
            } else {
                let _ = write!(out, "VPN-like interfaces ({}):\n", vpn_ifaces.len());
                for l in vpn_ifaces {
                    let _ = write!(out, "  {}\n", l.trim());
                }
            }
        }
    }

    Ok(out.trim_end().to_string())
}

// ── proxy ─────────────────────────────────────────────────────────────────────

fn inspect_proxy() -> Result<String, String> {
    let mut out = String::from("Host inspection: proxy\n\n");

    #[cfg(target_os = "windows")]
    {
        let script = r#"
$ie = Get-ItemProperty -Path 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings' -ErrorAction SilentlyContinue
if ($ie) {
    "ENABLE:" + $ie.ProxyEnable + "|SERVER:" + $ie.ProxyServer + "|OVERRIDE:" + $ie.ProxyOverride
} else { "NONE" }
"#;
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
        {
            let raw = String::from_utf8_lossy(&o.stdout);
            let text = raw.trim();
            if text != "NONE" && !text.is_empty() {
                let get = |key: &str| -> &str {
                    text.split('|')
                        .find(|s| s.starts_with(key))
                        .and_then(|s| s.split_once(':').map(|x| x.1))
                        .unwrap_or("")
                };
                let enabled = get("ENABLE");
                let server = get("SERVER");
                let overrides = get("OVERRIDE");
                out.push_str("WinINET / IE proxy:\n");
                let _ = writeln!(
                    out,
                    "  Enabled: {}",
                    if enabled == "1" { "yes" } else { "no" }
                );
                if !server.is_empty() && server != "None" {
                    let _ = writeln!(out, "  Proxy server: {server}");
                }
                if !overrides.is_empty() && overrides != "None" {
                    let _ = writeln!(out, "  Bypass list: {overrides}");
                }
                out.push('\n');
            }
        }

        if let Ok(o) = Command::new("netsh")
            .args(["winhttp", "show", "proxy"])
            .output()
        {
            let text = String::from_utf8_lossy(&o.stdout).trim().to_string();
            out.push_str("WinHTTP proxy:\n");
            for line in text.lines() {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "  {l}");
                }
            }
            out.push('\n');
        }

        let mut env_found = false;
        for var in &[
            "http_proxy",
            "https_proxy",
            "HTTP_PROXY",
            "HTTPS_PROXY",
            "no_proxy",
            "NO_PROXY",
        ] {
            if let Ok(val) = std::env::var(var) {
                if !env_found {
                    out.push_str("Environment proxy variables:\n");
                    env_found = true;
                }
                let _ = writeln!(out, "  {var}: {val}");
            }
        }
        if !env_found {
            out.push_str("No proxy environment variables set.\n");
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let mut found = false;
        for var in &[
            "http_proxy",
            "https_proxy",
            "HTTP_PROXY",
            "HTTPS_PROXY",
            "no_proxy",
            "NO_PROXY",
            "ALL_PROXY",
            "all_proxy",
        ] {
            if let Ok(val) = std::env::var(var) {
                if !found {
                    out.push_str("Proxy environment variables:\n");
                    found = true;
                }
                let _ = write!(out, "  {var}: {val}\n");
            }
        }
        if !found {
            out.push_str("No proxy environment variables set.\n");
        }
        if let Ok(content) = std::fs::read_to_string("/etc/environment") {
            let proxy_lines: Vec<&str> = content
                .lines()
                .filter(|l| l.to_lowercase().contains("proxy"))
                .collect();
            if !proxy_lines.is_empty() {
                out.push_str("\nSystem proxy (/etc/environment):\n");
                for l in proxy_lines {
                    let _ = write!(out, "  {l}\n");
                }
            }
        }
    }

    Ok(out.trim_end().to_string())
}

// ── firewall_rules ────────────────────────────────────────────────────────────

fn inspect_firewall_rules(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: firewall_rules\n\n");
    let n = max_entries.clamp(1, 20);

    #[cfg(target_os = "windows")]
    {
        let script = format!(
            r#"
try {{
    $rules = Get-NetFirewallRule -Enabled True -ErrorAction Stop |
        Where-Object {{
            $_.DisplayGroup -notmatch '^(@|Core Networking|Windows|File and Printer)' -and
            $_.Owner -eq $null
        }} | Select-Object -First {n} DisplayName, Direction, Action, Profile
    "TOTAL:" + $rules.Count
    $rules | ForEach-Object {{
        $dir = switch ($_.Direction) {{ 1 {{ "Inbound" }}; 2 {{ "Outbound" }}; default {{ "?" }} }}
        $act = switch ($_.Action) {{ 2 {{ "Allow" }}; 4 {{ "Block" }}; default {{ "?" }} }}
        $_.DisplayName + "|" + $dir + "|" + $act + "|" + $_.Profile
    }}
}} catch {{ "ERROR:" + $_.Exception.Message }}"#
        );

        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", &script])
            .output()
            .map_err(|e| format!("firewall_rules: {e}"))?;

        let raw = String::from_utf8_lossy(&output.stdout);
        let text = raw.trim();

        if text.starts_with("ERROR:") {
            let _ = writeln!(
                out,
                "Unable to query firewall rules: {}",
                text.trim_start_matches("ERROR:").trim()
            );
            out.push_str("This query may require running as administrator.\n");
        } else if text.is_empty() {
            out.push_str("No non-default enabled firewall rules found.\n");
        } else {
            let mut total = 0usize;
            for line in text.lines() {
                if let Some(rest) = line.strip_prefix("TOTAL:") {
                    total = rest.trim().parse().unwrap_or(0);
                    let _ = write!(out, "Non-default enabled rules (showing up to {n}):\n\n");
                } else {
                    let mut it = line.splitn(4, '|');
                    if let (Some(name), Some(dir), Some(action)) = (it.next(), it.next(), it.next())
                    {
                        let profile = it.next().unwrap_or("Any");
                        let icon = if action == "Block" { "[!]" } else { "   " };
                        let _ = writeln!(
                            out,
                            "  {icon} [{dir}] {action}: {name} (profile: {profile})"
                        );
                    }
                }
            }
            if total == 0 {
                out.push_str("No non-default enabled rules found.\n");
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        if let Ok(o) = Command::new("ufw").args(["status", "numbered"]).output() {
            let text = String::from_utf8_lossy(&o.stdout).trim().to_string();
            if !text.is_empty() {
                out.push_str(&text);
                out.push('\n');
            }
        } else if let Ok(o) = Command::new("iptables")
            .args(["-L", "-n", "--line-numbers"])
            .output()
        {
            let text = String::from_utf8_lossy(&o.stdout);
            for l in text.lines().take(n * 2) {
                let _ = write!(out, "  {l}\n");
            }
        } else {
            out.push_str("ufw and iptables not available or insufficient permissions.\n");
        }
    }

    Ok(out.trim_end().to_string())
}

// ── traceroute ────────────────────────────────────────────────────────────────

fn inspect_traceroute(host: &str, max_entries: usize) -> Result<String, String> {
    let mut out = format!("Host inspection: traceroute\n\nTarget: {host}\n\n");
    let hops = max_entries.clamp(5, 30);

    #[cfg(target_os = "windows")]
    {
        let output = Command::new("tracert")
            .args(["-d", "-h", &hops.to_string(), host])
            .output()
            .map_err(|e| format!("tracert: {e}"))?;
        let raw = String::from_utf8_lossy(&output.stdout);
        let mut hop_count = 0usize;
        for line in raw.lines() {
            let trimmed = line.trim();
            if trimmed.starts_with(|c: char| c.is_ascii_digit()) {
                hop_count += 1;
                let _ = writeln!(out, "  {trimmed}");
            } else if trimmed.starts_with("Tracing") || trimmed.starts_with("Trace complete") {
                let _ = writeln!(out, "{trimmed}");
            }
        }
        if hop_count == 0 {
            out.push_str("No hops returned — host may be unreachable or ICMP is blocked.\n");
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let cmd = if std::path::Path::new("/usr/bin/traceroute").exists()
            || std::path::Path::new("/usr/sbin/traceroute").exists()
        {
            "traceroute"
        } else {
            "tracepath"
        };
        let output = Command::new(cmd)
            .args(["-m", &hops.to_string(), "-n", host])
            .output()
            .map_err(|e| format!("{cmd}: {e}"))?;
        let raw = String::from_utf8_lossy(&output.stdout);
        let mut hop_count = 0usize;
        for line in raw.lines().take(hops + 2) {
            let trimmed = line.trim();
            if !trimmed.is_empty() {
                hop_count += 1;
                let _ = write!(out, "  {trimmed}\n");
            }
        }
        if hop_count == 0 {
            out.push_str("No hops returned — host may be unreachable or ICMP is blocked.\n");
        }
    }

    Ok(out.trim_end().to_string())
}

// ── dns_cache ─────────────────────────────────────────────────────────────────

fn inspect_dns_cache(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: dns_cache\n\n");
    let n = max_entries.clamp(10, 100);

    #[cfg(target_os = "windows")]
    {
        let output = Command::new("powershell")
            .args([
                "-NoProfile",
                "-Command",
                "Get-DnsClientCache | Select-Object -First 200 Entry,RecordType,Data,TimeToLive | ConvertTo-Csv -NoTypeInformation",
            ])
            .output()
            .map_err(|e| format!("dns_cache: {e}"))?;

        let raw = String::from_utf8_lossy(&output.stdout);
        let lines: Vec<&str> = raw.lines().skip(1).collect();
        let total = lines.len();

        if total == 0 {
            out.push_str("DNS cache is empty or could not be read.\n");
        } else {
            let _ = write!(out, "DNS cache entries (showing up to {n} of {total}):\n\n");
            let mut shown = 0usize;
            for line in lines.iter().take(n) {
                let mut it = line.splitn(4, ',');
                if let (Some(e), Some(rt), Some(d)) = (it.next(), it.next(), it.next()) {
                    let entry = e.trim_matches('"');
                    let rtype = rt.trim_matches('"');
                    let data = d.trim_matches('"');
                    let ttl = it.next().map(|s| s.trim_matches('"')).unwrap_or("?");
                    let _ = writeln!(out, "  {entry:<45} {rtype:<6} {data}  (TTL {ttl}s)");
                    shown += 1;
                }
            }
            if total > shown {
                let _ = write!(out, "\n  ... and {} more entries\n", total - shown);
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        if let Ok(o) = Command::new("resolvectl").args(["statistics"]).output() {
            let text = String::from_utf8_lossy(&o.stdout).trim().to_string();
            if !text.is_empty() {
                out.push_str("systemd-resolved statistics:\n");
                for line in text.lines().take(n) {
                    let _ = write!(out, "  {line}\n");
                }
                out.push('\n');
            }
        }
        if let Ok(o) = Command::new("dscacheutil")
            .args(["-cachedump", "-entries", "Host"])
            .output()
        {
            let text = String::from_utf8_lossy(&o.stdout).trim().to_string();
            if !text.is_empty() {
                out.push_str("DNS cache (macOS dscacheutil):\n");
                for line in text.lines().take(n) {
                    let _ = write!(out, "  {line}\n");
                }
            } else {
                out.push_str("DNS cache is empty or not accessible on this platform.\n");
            }
        } else {
            out.push_str(
                "DNS cache inspection not available (no resolvectl or dscacheutil found).\n",
            );
        }
    }

    Ok(out.trim_end().to_string())
}

// ── arp ───────────────────────────────────────────────────────────────────────

fn inspect_arp() -> Result<String, String> {
    let mut out = String::from("Host inspection: arp\n\n");

    #[cfg(target_os = "windows")]
    {
        let output = Command::new("arp")
            .args(["-a"])
            .output()
            .map_err(|e| format!("arp: {e}"))?;
        let raw = String::from_utf8_lossy(&output.stdout);
        let mut count = 0usize;
        for line in raw.lines() {
            let t = line.trim();
            if t.is_empty() {
                continue;
            }
            let _ = writeln!(out, "  {t}");
            if t.contains("dynamic") || t.contains("static") {
                count += 1;
            }
        }
        let _ = write!(out, "\nTotal entries: {count}\n");
    }

    #[cfg(not(target_os = "windows"))]
    {
        if let Ok(o) = Command::new("arp").args(["-n"]).output() {
            let raw = String::from_utf8_lossy(&o.stdout);
            let mut count = 0usize;
            for line in raw.lines() {
                let t = line.trim();
                if !t.is_empty() {
                    let _ = write!(out, "  {t}\n");
                    count += 1;
                }
            }
            let _ = write!(out, "\nTotal entries: {}\n", count.saturating_sub(1));
        } else if let Ok(o) = Command::new("ip").args(["neigh"]).output() {
            let raw = String::from_utf8_lossy(&o.stdout);
            let mut count = 0usize;
            for line in raw.lines() {
                let t = line.trim();
                if !t.is_empty() {
                    let _ = write!(out, "  {t}\n");
                    count += 1;
                }
            }
            let _ = write!(out, "\nTotal entries: {count}\n");
        } else {
            out.push_str("arp and ip neigh not available.\n");
        }
    }

    Ok(out.trim_end().to_string())
}

// ── route_table ───────────────────────────────────────────────────────────────

fn inspect_route_table(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: route_table\n\n");
    let n = max_entries.clamp(10, 50);

    #[cfg(target_os = "windows")]
    {
        let script = r#"
try {
    $routes = Get-NetRoute -ErrorAction Stop |
        Where-Object { $_.RouteMetric -lt 9000 } |
        Sort-Object RouteMetric |
        Select-Object DestinationPrefix, NextHop, RouteMetric, InterfaceAlias
    "TOTAL:" + $routes.Count
    $routes | ForEach-Object {
        $_.DestinationPrefix + "|" + $_.NextHop + "|" + $_.RouteMetric + "|" + $_.InterfaceAlias
    }
} catch { "ERROR:" + $_.Exception.Message }
"#;
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
            .map_err(|e| format!("route_table: {e}"))?;
        let raw = String::from_utf8_lossy(&output.stdout);
        let text = raw.trim();

        if text.starts_with("ERROR:") {
            let _ = writeln!(
                out,
                "Unable to read route table: {}",
                text.trim_start_matches("ERROR:").trim()
            );
        } else {
            let mut shown = 0usize;
            for line in text.lines() {
                if let Some(rest) = line.strip_prefix("TOTAL:") {
                    let total: usize = rest.trim().parse().unwrap_or(0);
                    let _ = write!(
                        out,
                        "Routing table (showing up to {n} of {total} routes):\n\n"
                    );
                    let _ = writeln!(
                        out,
                        "  {:<22} {:<18} {:>8}  Interface",
                        "Destination", "Next Hop", "Metric"
                    );
                    let _ = writeln!(out, "  {}", "-".repeat(70));
                } else if shown < n {
                    let mut it = line.splitn(4, '|');
                    if let (Some(dest), Some(p1), Some(metric), Some(iface)) =
                        (it.next(), it.next(), it.next(), it.next())
                    {
                        let hop = if p1.is_empty() || p1 == "0.0.0.0" || p1 == "::" {
                            "on-link"
                        } else {
                            p1
                        };
                        let _ = writeln!(out, "  {dest:<22} {hop:<18} {metric:>8}  {iface}");
                        shown += 1;
                    }
                }
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        if let Ok(o) = Command::new("ip").args(["route", "show"]).output() {
            let raw = String::from_utf8_lossy(&o.stdout);
            let lines: Vec<&str> = raw.lines().collect();
            let total = lines.len();
            let _ = write!(
                out,
                "Routing table (showing up to {n} of {total} routes):\n\n"
            );
            for line in lines.iter().take(n) {
                let _ = write!(out, "  {line}\n");
            }
            if total > n {
                let _ = write!(out, "\n  ... and {} more routes\n", total - n);
            }
        } else if let Ok(o) = Command::new("netstat").args(["-rn"]).output() {
            let raw = String::from_utf8_lossy(&o.stdout);
            for line in raw.lines().take(n) {
                let _ = write!(out, "  {line}\n");
            }
        } else {
            out.push_str("ip route and netstat not available.\n");
        }
    }

    Ok(out.trim_end().to_string())
}

// ── env ───────────────────────────────────────────────────────────────────────

fn inspect_env(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: env\n\n");
    let n = max_entries.clamp(10, 50);

    fn looks_like_secret(name: &str) -> bool {
        let n = name.to_uppercase();
        n.contains("KEY")
            || n.contains("SECRET")
            || n.contains("TOKEN")
            || n.contains("PASSWORD")
            || n.contains("PASSWD")
            || n.contains("CREDENTIAL")
            || n.contains("AUTH")
            || n.contains("CERT")
            || n.contains("PRIVATE")
    }

    let known_dev_vars: &[&str] = &[
        "CARGO_HOME",
        "RUSTUP_HOME",
        "GOPATH",
        "GOROOT",
        "GOBIN",
        "JAVA_HOME",
        "ANDROID_HOME",
        "ANDROID_SDK_ROOT",
        "PYTHONPATH",
        "PYTHONHOME",
        "VIRTUAL_ENV",
        "CONDA_DEFAULT_ENV",
        "CONDA_PREFIX",
        "NODE_PATH",
        "NVM_DIR",
        "NVM_BIN",
        "PNPM_HOME",
        "DENO_INSTALL",
        "DENO_DIR",
        "DOTNET_ROOT",
        "NUGET_PACKAGES",
        "CMAKE_HOME",
        "VCPKG_ROOT",
        "AWS_PROFILE",
        "AWS_REGION",
        "AWS_DEFAULT_REGION",
        "GCP_PROJECT",
        "GOOGLE_CLOUD_PROJECT",
        "GOOGLE_APPLICATION_CREDENTIALS",
        "AZURE_SUBSCRIPTION_ID",
        "DATABASE_URL",
        "REDIS_URL",
        "MONGO_URI",
        "EDITOR",
        "VISUAL",
        "SHELL",
        "TERM",
        "XDG_CONFIG_HOME",
        "XDG_DATA_HOME",
        "XDG_CACHE_HOME",
        "HOME",
        "USERPROFILE",
        "APPDATA",
        "LOCALAPPDATA",
        "TEMP",
        "TMP",
        "COMPUTERNAME",
        "USERNAME",
        "USERDOMAIN",
        "PROCESSOR_ARCHITECTURE",
        "NUMBER_OF_PROCESSORS",
        "OS",
        "HOMEDRIVE",
        "HOMEPATH",
        "HTTP_PROXY",
        "HTTPS_PROXY",
        "NO_PROXY",
        "ALL_PROXY",
        "http_proxy",
        "https_proxy",
        "no_proxy",
        "DOCKER_HOST",
        "DOCKER_BUILDKIT",
        "COMPOSE_PROJECT_NAME",
        "KUBECONFIG",
        "KUBE_CONTEXT",
        "CI",
        "GITHUB_ACTIONS",
        "GITLAB_CI",
        "LMSTUDIO_HOME",
        "HEMATITE_URL",
    ];

    let mut all_vars: Vec<(String, String)> = std::env::vars().collect();
    all_vars.sort_by(|a, b| a.0.cmp(&b.0));
    let total = all_vars.len();

    let mut dev_found: Vec<String> = Vec::new();
    let mut secret_found: Vec<String> = Vec::new();

    for (k, v) in &all_vars {
        if k == "PATH" {
            continue;
        }
        if looks_like_secret(k) {
            secret_found.push(format!("{k} = [SET, {} chars]", v.len()));
        } else {
            let k_upper = k.to_uppercase();
            let is_known = known_dev_vars
                .iter()
                .any(|kv| k_upper.as_str() == kv.to_uppercase().as_str());
            if is_known {
                let display = if v.len() > 120 {
                    format!("{k} = {}…", safe_head(v, 117))
                } else {
                    format!("{k} = {v}")
                };
                dev_found.push(display);
            }
        }
    }

    let _ = write!(out, "Total environment variables: {total}\n\n");

    if let Ok(p) = std::env::var("PATH") {
        let sep = if cfg!(target_os = "windows") {
            ';'
        } else {
            ':'
        };
        let count = p.split(sep).count();
        let _ = write!(
            out,
            "PATH: {count} entries (use topic=path for full audit)\n\n"
        );
    }

    if !secret_found.is_empty() {
        let _ = writeln!(
            out,
            "=== Secret/credential variables ({} detected, values hidden) ===",
            secret_found.len()
        );
        for s in secret_found.iter().take(n) {
            let _ = writeln!(out, "  {s}");
        }
        out.push('\n');
    }

    if !dev_found.is_empty() {
        let _ = writeln!(
            out,
            "=== Developer & tool variables ({}) ===",
            dev_found.len()
        );
        for d in dev_found.iter().take(n) {
            let _ = writeln!(out, "  {d}");
        }
        out.push('\n');
    }

    let other_count = all_vars
        .iter()
        .filter(|(k, _)| {
            k != "PATH"
                && !looks_like_secret(k)
                && !known_dev_vars
                    .iter()
                    .any(|kv| k.to_uppercase().as_str() == kv.to_uppercase().as_str())
        })
        .count();
    if other_count > 0 {
        let _ = writeln!(
            out,
            "Other variables: {other_count} (use 'env' in shell to see all)"
        );
    }

    Ok(out.trim_end().to_string())
}

// ── hosts_file ────────────────────────────────────────────────────────────────

fn inspect_hosts_file() -> Result<String, String> {
    let mut out = String::from("Host inspection: hosts_file\n\n");

    let hosts_path = if cfg!(target_os = "windows") {
        std::path::PathBuf::from(r"C:\Windows\System32\drivers\etc\hosts")
    } else {
        std::path::PathBuf::from("/etc/hosts")
    };

    let _ = write!(out, "Path: {}\n\n", hosts_path.display());

    match fs::read_to_string(&hosts_path) {
        Ok(content) => {
            let mut active_entries: Vec<String> = Vec::new();
            let mut comment_lines = 0usize;
            let mut blank_lines = 0usize;

            for line in content.lines() {
                let t = line.trim();
                if t.is_empty() {
                    blank_lines += 1;
                } else if t.starts_with('#') {
                    comment_lines += 1;
                } else {
                    active_entries.push(line.to_string());
                }
            }

            let _ = write!(
                out,
                "Active entries: {}  |  Comment lines: {}  |  Blank lines: {}\n\n",
                active_entries.len(),
                comment_lines,
                blank_lines
            );

            if active_entries.is_empty() {
                out.push_str(
                    "No active host entries (file contains only comments/blanks — standard default state).\n",
                );
            } else {
                out.push_str("=== Active entries ===\n");
                for entry in &active_entries {
                    let _ = writeln!(out, "  {entry}");
                }
                out.push('\n');

                let custom: Vec<&String> = active_entries
                    .iter()
                    .filter(|e| {
                        let t = e.trim_start();
                        !t.starts_with("127.") && !t.starts_with("::1") && !t.starts_with("0.0.0.0")
                    })
                    .collect();
                if !custom.is_empty() {
                    let _ = writeln!(out, "[!] Custom (non-loopback) entries: {}", custom.len());
                    for e in &custom {
                        let _ = writeln!(out, "  {e}");
                    }
                } else {
                    out.push_str("All active entries are standard loopback or block entries.\n");
                }
            }

            out.push_str("\n=== Full file ===\n");
            for line in content.lines() {
                let _ = writeln!(out, "  {line}");
            }
        }
        Err(e) => {
            let _ = writeln!(out, "Could not read hosts file: {e}");
            if cfg!(target_os = "windows") {
                out.push_str(
                    "On Windows, run Hematite as Administrator if permission is denied.\n",
                );
            }
        }
    }

    Ok(out.trim_end().to_string())
}

// ── docker ────────────────────────────────────────────────────────────────────

struct AuditFinding {
    finding: String,
    impact: String,
    fix: String,
}

#[cfg(target_os = "windows")]
#[derive(Debug, Clone)]
struct WindowsPnpDevice {
    name: String,
    status: String,
    problem: Option<u64>,
    class_name: Option<String>,
    instance_id: Option<String>,
}

#[cfg(target_os = "windows")]
#[derive(Debug, Clone)]
struct WindowsSoundDevice {
    name: String,
    status: String,
    manufacturer: Option<String>,
}

struct DockerMountAudit {
    mount_type: String,
    source: Option<String>,
    destination: String,
    name: Option<String>,
    read_write: Option<bool>,
    driver: Option<String>,
    exists_on_host: Option<bool>,
}

struct DockerContainerAudit {
    name: String,
    image: String,
    status: String,
    mounts: Vec<DockerMountAudit>,
}

struct DockerVolumeAudit {
    name: String,
    driver: String,
    mountpoint: Option<String>,
    scope: Option<String>,
}

#[cfg(target_os = "windows")]
struct WslDistroAudit {
    name: String,
    state: String,
    version: String,
}

#[cfg(target_os = "windows")]
struct WslRootUsage {
    total_kb: u64,
    used_kb: u64,
    avail_kb: u64,
    use_percent: String,
    mnt_c_present: Option<bool>,
}

fn docker_engine_version() -> Result<String, String> {
    let version_output = Command::new("docker")
        .args(["version", "--format", "{{.Server.Version}}"])
        .output();

    match version_output {
        Err(_) => Err(
            "Docker: not found on PATH.\nInstall Docker Desktop: https://www.docker.com/products/docker-desktop".to_string(),
        ),
        Ok(o) if !o.status.success() => {
            let stderr = String::from_utf8_lossy(&o.stderr);
            if stderr.contains("cannot connect")
                || stderr.contains("Is the docker daemon running")
                || stderr.contains("pipe")
                || stderr.contains("socket")
            {
                Err(
                    "Docker: installed but daemon is NOT running.\nStart Docker Desktop or run: sudo systemctl start docker".to_string(),
                )
            } else {
                Err(format!("Docker: error - {}", stderr.trim()))
            }
        }
        Ok(o) => Ok(String::from_utf8_lossy(&o.stdout).trim().to_string()),
    }
}

fn parse_docker_mounts(raw: &str) -> Vec<DockerMountAudit> {
    let Ok(value) = serde_json::from_str::<Value>(raw.trim()) else {
        return Vec::new();
    };
    let Value::Array(entries) = value else {
        return Vec::new();
    };

    let mut mounts = Vec::with_capacity(entries.len());
    for entry in entries {
        let mount_type = entry
            .get("Type")
            .and_then(|v| v.as_str())
            .unwrap_or("unknown")
            .to_string();
        let source = entry
            .get("Source")
            .and_then(|v| v.as_str())
            .map(|v| v.to_string());
        let destination = entry
            .get("Destination")
            .and_then(|v| v.as_str())
            .unwrap_or("?")
            .to_string();
        let name = entry
            .get("Name")
            .and_then(|v| v.as_str())
            .map(|v| v.to_string());
        let read_write = entry.get("RW").and_then(|v| v.as_bool());
        let driver = entry
            .get("Driver")
            .and_then(|v| v.as_str())
            .map(|v| v.to_string());
        let exists_on_host = if mount_type == "bind" {
            source.as_deref().map(|path| Path::new(path).exists())
        } else {
            None
        };
        mounts.push(DockerMountAudit {
            mount_type,
            source,
            destination,
            name,
            read_write,
            driver,
            exists_on_host,
        });
    }

    mounts
}

fn inspect_docker_volume(name: &str) -> DockerVolumeAudit {
    let mut audit = DockerVolumeAudit {
        name: name.to_string(),
        driver: "unknown".to_string(),
        mountpoint: None,
        scope: None,
    };

    if let Ok(output) = Command::new("docker")
        .args(["volume", "inspect", name, "--format", "{{json .}}"])
        .output()
    {
        if output.status.success() {
            if let Ok(value) =
                serde_json::from_str::<Value>(String::from_utf8_lossy(&output.stdout).trim())
            {
                audit.driver = value
                    .get("Driver")
                    .and_then(|v| v.as_str())
                    .unwrap_or("unknown")
                    .to_string();
                audit.mountpoint = value
                    .get("Mountpoint")
                    .and_then(|v| v.as_str())
                    .map(|v| v.to_string());
                audit.scope = value
                    .get("Scope")
                    .and_then(|v| v.as_str())
                    .map(|v| v.to_string());
            }
        }
    }

    audit
}

#[cfg(target_os = "windows")]
fn docker_desktop_disk_image() -> Option<(PathBuf, u64)> {
    let local_app_data = std::env::var_os("LOCALAPPDATA").map(PathBuf::from)?;
    for file_name in ["docker_data.vhdx", "ext4.vhdx"] {
        let path = local_app_data
            .join("Docker")
            .join("wsl")
            .join("disk")
            .join(file_name);
        if let Ok(metadata) = fs::metadata(&path) {
            return Some((path, metadata.len()));
        }
    }
    None
}

#[cfg(target_os = "windows")]
fn clean_wsl_text(raw: &[u8]) -> String {
    String::from_utf8_lossy(raw)
        .chars()
        .filter(|c| *c != '\0')
        .collect()
}

#[cfg(target_os = "windows")]
fn parse_wsl_distros(raw: &str) -> Vec<WslDistroAudit> {
    let mut distros = Vec::new();
    for line in raw.lines() {
        let trimmed = line.trim();
        if trimmed.is_empty()
            || trimmed.to_uppercase().starts_with("NAME")
            || trimmed.starts_with("---")
        {
            continue;
        }
        let normalized = trimmed.trim_start_matches('*').trim();
        let cols: Vec<&str> = normalized.split_whitespace().collect();
        if cols.len() < 3 {
            continue;
        }
        let version = cols[cols.len() - 1].to_string();
        let state = cols[cols.len() - 2].to_string();
        let name = cols[..cols.len() - 2].join(" ");
        if !name.is_empty() {
            distros.push(WslDistroAudit {
                name,
                state,
                version,
            });
        }
    }
    distros
}

#[cfg(target_os = "windows")]
fn wsl_root_usage(distro_name: &str) -> Option<WslRootUsage> {
    let output = Command::new("wsl")
        .args([
            "-d",
            distro_name,
            "--",
            "sh",
            "-lc",
            "df -k / 2>/dev/null | tail -n 1; if [ -d /mnt/c ]; then echo __MNTC__:ok; else echo __MNTC__:missing; fi",
        ])
        .output()
        .ok()?;
    if !output.status.success() {
        return None;
    }

    let text = clean_wsl_text(&output.stdout);
    let mut total_kb = 0;
    let mut used_kb = 0;
    let mut avail_kb = 0;
    let mut use_percent = String::from("unknown");
    let mut mnt_c_present = None;

    for line in text.lines() {
        let trimmed = line.trim();
        if trimmed.starts_with("__MNTC__:") {
            mnt_c_present = Some(trimmed.ends_with("ok"));
            continue;
        }
        let mut it = trimmed.split_whitespace();
        if let (Some(_), Some(total), Some(used), Some(avail), Some(pct), Some(_)) = (
            it.next(),
            it.next(),
            it.next(),
            it.next(),
            it.next(),
            it.next(),
        ) {
            total_kb = total.parse::<u64>().unwrap_or(0);
            used_kb = used.parse::<u64>().unwrap_or(0);
            avail_kb = avail.parse::<u64>().unwrap_or(0);
            use_percent = pct.to_string();
        }
    }

    Some(WslRootUsage {
        total_kb,
        used_kb,
        avail_kb,
        use_percent,
        mnt_c_present,
    })
}

#[cfg(target_os = "windows")]
fn collect_wsl_vhdx_files() -> Vec<(PathBuf, u64)> {
    let mut vhds = Vec::new();
    let Some(local_app_data) = std::env::var_os("LOCALAPPDATA").map(PathBuf::from) else {
        return vhds;
    };
    let packages_dir = local_app_data.join("Packages");
    let Ok(entries) = fs::read_dir(packages_dir) else {
        return vhds;
    };

    for entry in entries.flatten() {
        let path = entry.path().join("LocalState").join("ext4.vhdx");
        if let Ok(metadata) = fs::metadata(&path) {
            vhds.push((path, metadata.len()));
        }
    }
    vhds.sort_by_key(|b| std::cmp::Reverse(b.1));
    vhds
}

fn inspect_docker(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: docker\n\n");
    let n = max_entries.clamp(5, 25);

    let version_output = Command::new("docker")
        .args(["version", "--format", "{{.Server.Version}}"])
        .output();

    match version_output {
        Err(_) => {
            out.push_str("Docker: not found on PATH.\n");
            out.push_str(
                "Install Docker Desktop: https://www.docker.com/products/docker-desktop\n",
            );
            return Ok(out.trim_end().to_string());
        }
        Ok(o) if !o.status.success() => {
            let stderr = String::from_utf8_lossy(&o.stderr);
            if stderr.contains("cannot connect")
                || stderr.contains("Is the docker daemon running")
                || stderr.contains("pipe")
                || stderr.contains("socket")
            {
                out.push_str("Docker: installed but daemon is NOT running.\n");
                out.push_str("Start Docker Desktop or run: sudo systemctl start docker\n");
            } else {
                let _ = writeln!(out, "Docker: error — {}", stderr.trim());
            }
            return Ok(out.trim_end().to_string());
        }
        Ok(o) => {
            let version = String::from_utf8_lossy(&o.stdout).trim().to_string();
            let _ = writeln!(out, "Docker Engine: {version}");
        }
    }

    if let Ok(o) = Command::new("docker")
        .args([
            "info",
            "--format",
            "Containers: {{.Containers}} (running: {{.ContainersRunning}}, stopped: {{.ContainersStopped}})\nImages: {{.Images}}\nStorage driver: {{.Driver}}\nOS/Arch: {{.OSType}}/{{.Architecture}}\nCPUs: {{.NCPU}}",
        ])
        .output()
    {
        let info = String::from_utf8_lossy(&o.stdout);
        for line in info.lines() {
            let t = line.trim();
            if !t.is_empty() {
                let _ = writeln!(out, "  {t}");
            }
        }
        out.push('\n');
    }

    if let Ok(o) = Command::new("docker")
        .args([
            "ps",
            "--format",
            "table {{.Names}}\t{{.Image}}\t{{.Status}}\t{{.Ports}}",
        ])
        .output()
    {
        let raw = String::from_utf8_lossy(&o.stdout);
        let lines: Vec<&str> = raw.lines().collect();
        if lines.len() <= 1 {
            out.push_str("Running containers: none\n\n");
        } else {
            let _ = writeln!(
                out,
                "=== Running containers ({}) ===",
                lines.len().saturating_sub(1)
            );
            for line in lines.iter().take(n + 1) {
                let _ = writeln!(out, "  {line}");
            }
            if lines.len() > n + 1 {
                let _ = writeln!(out, "  ... and {} more", lines.len() - n - 1);
            }
            out.push('\n');
        }
    }

    if let Ok(o) = Command::new("docker")
        .args([
            "images",
            "--format",
            "table {{.Repository}}\t{{.Tag}}\t{{.Size}}\t{{.CreatedSince}}",
        ])
        .output()
    {
        let raw = String::from_utf8_lossy(&o.stdout);
        let lines: Vec<&str> = raw.lines().collect();
        if lines.len() > 1 {
            let _ = writeln!(
                out,
                "=== Local images ({}) ===",
                lines.len().saturating_sub(1)
            );
            for line in lines.iter().take(n + 1) {
                let _ = writeln!(out, "  {line}");
            }
            if lines.len() > n + 1 {
                let _ = writeln!(out, "  ... and {} more", lines.len() - n - 1);
            }
            out.push('\n');
        }
    }

    if let Ok(o) = Command::new("docker")
        .args([
            "compose",
            "ls",
            "--format",
            "table {{.Name}}\t{{.Status}}\t{{.ConfigFiles}}",
        ])
        .output()
    {
        let raw = String::from_utf8_lossy(&o.stdout);
        let lines: Vec<&str> = raw.lines().collect();
        if lines.len() > 1 {
            let _ = writeln!(
                out,
                "=== Compose projects ({}) ===",
                lines.len().saturating_sub(1)
            );
            for line in lines.iter().take(n + 1) {
                let _ = writeln!(out, "  {line}");
            }
            out.push('\n');
        }
    }

    if let Ok(o) = Command::new("docker").args(["context", "show"]).output() {
        let ctx = String::from_utf8_lossy(&o.stdout).trim().to_string();
        if !ctx.is_empty() {
            let _ = writeln!(out, "Active context: {ctx}");
        }
    }

    Ok(out.trim_end().to_string())
}

// ── wsl ───────────────────────────────────────────────────────────────────────

fn inspect_docker_filesystems(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: docker_filesystems\n\n");
    let n = max_entries.clamp(3, 12);

    match docker_engine_version() {
        Ok(version) => {
            let _ = writeln!(out, "Docker Engine: {version}");
        }
        Err(message) => {
            out.push_str(&message);
            return Ok(out.trim_end().to_string());
        }
    }

    if let Ok(o) = Command::new("docker").args(["context", "show"]).output() {
        let ctx = String::from_utf8_lossy(&o.stdout).trim().to_string();
        if !ctx.is_empty() {
            let _ = writeln!(out, "Active context: {ctx}");
        }
    }
    out.push('\n');

    let mut containers = Vec::with_capacity(n);
    if let Ok(o) = Command::new("docker")
        .args([
            "ps",
            "-a",
            "--format",
            "{{.Names}}\t{{.Image}}\t{{.Status}}",
        ])
        .output()
    {
        for line in String::from_utf8_lossy(&o.stdout).lines().take(n) {
            let mut it = line.splitn(3, '\t');
            let (Some(name_raw), Some(image_raw), Some(status_raw)) =
                (it.next(), it.next(), it.next())
            else {
                continue;
            };
            let name = name_raw.trim().to_string();
            if name.is_empty() {
                continue;
            }
            let inspect_output = Command::new("docker")
                .args(["inspect", &name, "--format", "{{json .Mounts}}"])
                .output();
            let mounts = match inspect_output {
                Ok(result) if result.status.success() => {
                    parse_docker_mounts(String::from_utf8_lossy(&result.stdout).trim())
                }
                _ => Vec::new(),
            };
            containers.push(DockerContainerAudit {
                name,
                image: image_raw.trim().to_string(),
                status: status_raw.trim().to_string(),
                mounts,
            });
        }
    }

    let mut volumes = Vec::with_capacity(n);
    if let Ok(o) = Command::new("docker")
        .args(["volume", "ls", "--format", "{{.Name}}\t{{.Driver}}"])
        .output()
    {
        for line in String::from_utf8_lossy(&o.stdout).lines().take(n) {
            let mut it = line.split('\t');
            let Some(name) = it.next().map(|v| v.trim()).filter(|v| !v.is_empty()) else {
                continue;
            };
            let driver_hint = it.next().map(|v| v.trim()).filter(|v| !v.is_empty());
            let mut audit = inspect_docker_volume(name);
            if audit.driver == "unknown" {
                audit.driver = driver_hint.unwrap_or("unknown").to_string();
            }
            volumes.push(audit);
        }
    }

    let mut findings = Vec::with_capacity(4);
    for container in &containers {
        for mount in &container.mounts {
            if mount.mount_type == "bind" && mount.exists_on_host == Some(false) {
                let source = mount.source.as_deref().unwrap_or("<unknown>");
                findings.push(AuditFinding {
                    finding: format!(
                        "Container '{}' has a bind mount whose host source is missing: {} -> {}",
                        container.name, source, mount.destination
                    ),
                    impact: "The container may fail to start, or it may see an empty or incomplete directory at the target path.".to_string(),
                    fix: "Create the host path or correct the bind source in docker-compose.yml / docker run, then recreate the container.".to_string(),
                });
            }
        }
    }

    #[cfg(target_os = "windows")]
    if let Some((path, size_bytes)) = docker_desktop_disk_image() {
        if size_bytes >= 20 * 1024 * 1024 * 1024 {
            findings.push(AuditFinding {
                finding: format!(
                    "Docker Desktop disk image is large: {} at {}",
                    human_bytes(size_bytes),
                    path.display()
                ),
                impact: "Unused layers, volumes, and build cache can silently consume Windows disk even after projects are deleted.".to_string(),
                fix: "Review `docker system df`, prune unused images, containers, and volumes if safe, then compact the Docker Desktop disk with your normal maintenance workflow.".to_string(),
            });
        }
    }

    out.push_str("=== Findings ===\n");
    if findings.is_empty() {
        out.push_str("- Finding: No missing bind-mount sources or oversized Docker Desktop disk images were detected.\n");
        out.push_str("  Impact: The Docker host-side filesystem wiring looks sane from this inspection pass.\n");
        out.push_str("  Fix: If a workload still cannot see files, compare the mount destinations below against the app's expected paths.\n");
    } else {
        for finding in &findings {
            let _ = writeln!(out, "- Finding: {}", finding.finding);
            let _ = writeln!(out, "  Impact: {}", finding.impact);
            let _ = writeln!(out, "  Fix: {}", finding.fix);
        }
    }

    out.push_str("\n=== Container mount summary ===\n");
    if containers.is_empty() {
        out.push_str("- No containers found.\n");
    } else {
        for container in &containers {
            let _ = writeln!(
                out,
                "- {} ({}) [{}]",
                container.name, container.image, container.status
            );
            if container.mounts.is_empty() {
                out.push_str("  - no mounts reported\n");
                continue;
            }
            for mount in &container.mounts {
                let mut source = mount
                    .name
                    .clone()
                    .or_else(|| mount.source.clone())
                    .unwrap_or_else(|| "<unknown>".to_string());
                if mount.mount_type == "bind" && mount.exists_on_host == Some(false) {
                    source.push_str(" [missing]");
                }
                let mut extras = Vec::with_capacity(2);
                if let Some(rw) = mount.read_write {
                    extras.push(if rw { "rw" } else { "ro" }.to_string());
                }
                if let Some(driver) = &mount.driver {
                    extras.push(format!("driver={driver}"));
                }
                let extra_suffix = if extras.is_empty() {
                    String::new()
                } else {
                    format!(" ({})", extras.join(", "))
                };
                let _ = writeln!(
                    out,
                    "  - {}: {} -> {}{}",
                    mount.mount_type, source, mount.destination, extra_suffix
                );
            }
        }
    }

    out.push_str("\n=== Named volumes ===\n");
    if volumes.is_empty() {
        out.push_str("- No named volumes found.\n");
    } else {
        for volume in &volumes {
            let mut detail = format!("- {} (driver: {})", volume.name, volume.driver);
            if let Some(scope) = &volume.scope {
                let _ = write!(detail, ", scope: {scope}");
            }
            if let Some(mountpoint) = &volume.mountpoint {
                let _ = write!(detail, ", mountpoint: {mountpoint}");
            }
            let _ = writeln!(out, "{detail}");
        }
    }

    #[cfg(target_os = "windows")]
    if let Some((path, size_bytes)) = docker_desktop_disk_image() {
        out.push_str("\n=== Docker Desktop disk ===\n");
        let _ = writeln!(out, "- {} at {}", human_bytes(size_bytes), path.display());
    }

    Ok(out.trim_end().to_string())
}

fn inspect_wsl() -> Result<String, String> {
    let mut out = String::from("Host inspection: wsl\n\n");

    #[cfg(target_os = "windows")]
    {
        if let Ok(o) = Command::new("wsl").args(["--version"]).output() {
            let raw = String::from_utf8_lossy(&o.stdout);
            let cleaned: String = raw.chars().filter(|c| *c != '\0').collect();
            for line in cleaned.lines().take(4) {
                let t = line.trim();
                if !t.is_empty() {
                    let _ = writeln!(out, "  {t}");
                }
            }
            out.push('\n');
        }

        let list_output = Command::new("wsl").args(["--list", "--verbose"]).output();
        match list_output {
            Err(e) => {
                let _ = writeln!(out, "WSL: wsl.exe error: {e}");
                out.push_str("WSL may not be installed. Enable with: wsl --install\n");
            }
            Ok(o) if !o.status.success() => {
                let stderr = String::from_utf8_lossy(&o.stderr);
                let cleaned: String = stderr.chars().filter(|c| *c != '\0').collect();
                let _ = writeln!(out, "WSL: error — {}", cleaned.trim());
                out.push_str("Run: wsl --install\n");
            }
            Ok(o) => {
                let raw = String::from_utf8_lossy(&o.stdout);
                let cleaned: String = raw.chars().filter(|c| *c != '\0').collect();
                let lines: Vec<&str> = cleaned.lines().filter(|l| !l.trim().is_empty()).collect();
                let distro_lines: Vec<&str> = lines
                    .iter()
                    .filter(|l| {
                        let t = l.trim();
                        !t.is_empty()
                            && !t.to_uppercase().starts_with("NAME")
                            && !t.starts_with("---")
                    })
                    .copied()
                    .collect();

                if distro_lines.is_empty() {
                    out.push_str("WSL: installed but no distributions found.\n");
                    out.push_str("Install a distro: wsl --install -d Ubuntu\n");
                } else {
                    out.push_str("=== WSL Distributions ===\n");
                    for line in &lines {
                        let _ = writeln!(out, "  {}", line.trim());
                    }
                    let _ = write!(out, "\nTotal distributions: {}\n", distro_lines.len());
                }
            }
        }

        if let Ok(o) = Command::new("wsl").args(["--status"]).output() {
            let raw = String::from_utf8_lossy(&o.stdout);
            let cleaned: String = raw.chars().filter(|c| *c != '\0').collect();
            let status_lines: Vec<&str> = cleaned
                .lines()
                .filter(|l| !l.trim().is_empty())
                .take(8)
                .collect();
            if !status_lines.is_empty() {
                out.push_str("\n=== WSL status ===\n");
                for line in status_lines {
                    let _ = writeln!(out, "  {}", line.trim());
                }
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        out.push_str("WSL (Windows Subsystem for Linux) is a Windows-only feature.\n");
        out.push_str("On Linux/macOS, use native virtualization (KVM, UTM, Parallels) instead.\n");
    }

    Ok(out.trim_end().to_string())
}

// ── ssh ───────────────────────────────────────────────────────────────────────

fn inspect_wsl_filesystems(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: wsl_filesystems\n\n");

    #[cfg(target_os = "windows")]
    {
        let n = max_entries.clamp(3, 12);
        let list_output = Command::new("wsl").args(["--list", "--verbose"]).output();
        let distros = match list_output {
            Err(e) => {
                let _ = writeln!(out, "WSL: wsl.exe error: {e}");
                out.push_str("WSL may not be installed. Enable with: wsl --install\n");
                return Ok(out.trim_end().to_string());
            }
            Ok(o) if !o.status.success() => {
                let cleaned = clean_wsl_text(&o.stderr);
                let _ = writeln!(out, "WSL: error - {}", cleaned.trim());
                out.push_str("Run: wsl --install\n");
                return Ok(out.trim_end().to_string());
            }
            Ok(o) => parse_wsl_distros(&clean_wsl_text(&o.stdout)),
        };

        let _ = write!(out, "Distributions detected: {}\n\n", distros.len());

        let vhdx_files = collect_wsl_vhdx_files();
        let mut findings = Vec::with_capacity(4);
        let mut live_usage = Vec::with_capacity(n);

        for distro in distros.iter().take(n) {
            if distro.state.eq_ignore_ascii_case("Running") {
                if let Some(usage) = wsl_root_usage(&distro.name) {
                    if let Some(false) = usage.mnt_c_present {
                        findings.push(AuditFinding {
                            finding: format!(
                                "Distro '{}' is running without /mnt/c available",
                                distro.name
                            ),
                            impact: "Windows to WSL path bridging is broken, so projects under C:\\ may not be reachable from Linux tools.".to_string(),
                            fix: "Check /etc/wsl.conf automount settings, restart WSL with `wsl --shutdown`, then confirm drvfs automount is enabled.".to_string(),
                        });
                    }

                    let percent_num = usage
                        .use_percent
                        .trim_end_matches('%')
                        .parse::<u32>()
                        .unwrap_or(0);
                    if percent_num >= 85 {
                        findings.push(AuditFinding {
                            finding: format!(
                                "Distro '{}' root filesystem is {} full",
                                distro.name, usage.use_percent
                            ),
                            impact: "Package installs, git checkouts, and build caches inside WSL can start failing even when Windows still has free space.".to_string(),
                            fix: "Free space inside the distro first, then shut WSL down and compact the VHDX if the host-side file stays large.".to_string(),
                        });
                    }
                    live_usage.push((distro.name.clone(), usage));
                }
            }
        }

        for (path, size_bytes) in vhdx_files.iter().take(n) {
            if *size_bytes >= 20 * 1024 * 1024 * 1024 {
                findings.push(AuditFinding {
                    finding: format!(
                        "Host-side WSL disk image is large: {} at {}",
                        human_bytes(*size_bytes),
                        path.display()
                    ),
                    impact: "Sparse VHDX files can keep consuming Windows disk after files are deleted inside the distro.".to_string(),
                    fix: "Clean files inside the distro first, then shut WSL down and compact the VHDX with your normal maintenance workflow.".to_string(),
                });
            }
        }

        out.push_str("=== Findings ===\n");
        if findings.is_empty() {
            out.push_str("- Finding: No oversized WSL disk images or broken /mnt/c bridge mounts were detected in the sampled distros.\n");
            out.push_str("  Impact: WSL storage and Windows path bridging look healthy from this inspection pass.\n");
            out.push_str("  Fix: If a specific project path still fails, inspect the per-distro bridge and disk details below.\n");
        } else {
            for finding in &findings {
                let _ = writeln!(out, "- Finding: {}", finding.finding);
                let _ = writeln!(out, "  Impact: {}", finding.impact);
                let _ = writeln!(out, "  Fix: {}", finding.fix);
            }
        }

        out.push_str("\n=== Distro bridge and root usage ===\n");
        if distros.is_empty() {
            out.push_str("- No WSL distributions found.\n");
        } else {
            for distro in distros.iter().take(n) {
                let _ = writeln!(
                    out,
                    "- {} [state: {}, version: {}]",
                    distro.name, distro.state, distro.version
                );
                if let Some((_, usage)) = live_usage.iter().find(|(name, _)| name == &distro.name) {
                    let _ = writeln!(
                        out,
                        "  - rootfs: {} used / {} total ({}), free: {}",
                        human_bytes(usage.used_kb * 1024),
                        human_bytes(usage.total_kb * 1024),
                        usage.use_percent,
                        human_bytes(usage.avail_kb * 1024)
                    );
                    match usage.mnt_c_present {
                        Some(true) => out.push_str("  - /mnt/c bridge: present\n"),
                        Some(false) => out.push_str("  - /mnt/c bridge: missing\n"),
                        None => out.push_str("  - /mnt/c bridge: unknown\n"),
                    }
                } else if distro.state.eq_ignore_ascii_case("Running") {
                    out.push_str("  - live rootfs check: unavailable\n");
                } else {
                    out.push_str(
                        "  - live rootfs check: skipped to avoid starting a stopped distro\n",
                    );
                }
            }
        }

        out.push_str("\n=== Host-side VHDX files ===\n");
        if vhdx_files.is_empty() {
            out.push_str("- No ext4.vhdx files found under %LOCALAPPDATA%\\Packages. Imported distros may live elsewhere.\n");
        } else {
            for (path, size_bytes) in vhdx_files.iter().take(n) {
                let _ = writeln!(out, "- {} at {}", human_bytes(*size_bytes), path.display());
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let _ = max_entries;
        out.push_str("WSL filesystem auditing is a Windows-only inspection.\n");
        out.push_str("On Linux/macOS, use native VM/container storage inspection instead.\n");
    }

    Ok(out.trim_end().to_string())
}

fn dirs_home() -> Option<PathBuf> {
    std::env::var("HOME")
        .ok()
        .map(PathBuf::from)
        .or_else(|| std::env::var("USERPROFILE").ok().map(PathBuf::from))
}

fn inspect_ssh() -> Result<String, String> {
    let mut out = String::from("Host inspection: ssh\n\n");

    if let Ok(o) = Command::new("ssh").args(["-V"]).output() {
        let ver = if o.stdout.is_empty() {
            String::from_utf8_lossy(&o.stderr).trim().to_string()
        } else {
            String::from_utf8_lossy(&o.stdout).trim().to_string()
        };
        if !ver.is_empty() {
            let _ = writeln!(out, "SSH client: {ver}");
        }
    } else {
        out.push_str("SSH client: not found on PATH.\n");
    }

    #[cfg(target_os = "windows")]
    {
        let script = r#"
$svc = Get-Service -Name sshd -ErrorAction SilentlyContinue
if ($svc) { "SSHD:" + $svc.Status + " | StartType:" + $svc.StartType }
else { "SSHD:not_installed" }
"#;
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
        {
            let text = String::from_utf8_lossy(&o.stdout).trim().to_string();
            if text.contains("not_installed") {
                out.push_str("SSH server (sshd): not installed\n");
            } else {
                let _ = writeln!(
                    out,
                    "SSH server (sshd): {}",
                    text.trim_start_matches("SSHD:")
                );
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        if let Ok(o) = Command::new("systemctl")
            .args(["is-active", "sshd"])
            .output()
        {
            let status = String::from_utf8_lossy(&o.stdout).trim().to_string();
            let _ = write!(out, "SSH server (sshd): {status}\n");
        } else if let Ok(o) = Command::new("systemctl")
            .args(["is-active", "ssh"])
            .output()
        {
            let status = String::from_utf8_lossy(&o.stdout).trim().to_string();
            let _ = write!(out, "SSH server (ssh): {status}\n");
        }
    }

    out.push('\n');

    if let Some(ssh_dir) = dirs_home().map(|h| h.join(".ssh")) {
        if ssh_dir.exists() {
            let _ = writeln!(out, "~/.ssh: {}", ssh_dir.display());

            let kh = ssh_dir.join("known_hosts");
            if kh.exists() {
                let count = fs::read_to_string(&kh)
                    .map(|c| {
                        c.lines()
                            .filter(|l| !l.trim().is_empty() && !l.trim().starts_with('#'))
                            .count()
                    })
                    .unwrap_or(0);
                let _ = writeln!(out, "  known_hosts: {count} entries");
            } else {
                out.push_str("  known_hosts: not present\n");
            }

            let ak = ssh_dir.join("authorized_keys");
            if ak.exists() {
                let count = fs::read_to_string(&ak)
                    .map(|c| {
                        c.lines()
                            .filter(|l| !l.trim().is_empty() && !l.trim().starts_with('#'))
                            .count()
                    })
                    .unwrap_or(0);
                let _ = writeln!(out, "  authorized_keys: {count} public keys");
            } else {
                out.push_str("  authorized_keys: not present\n");
            }

            let key_names = [
                "id_rsa",
                "id_ed25519",
                "id_ecdsa",
                "id_dsa",
                "id_ecdsa_sk",
                "id_ed25519_sk",
            ];
            let found_keys: Vec<&str> = key_names
                .iter()
                .filter(|k| ssh_dir.join(k).exists())
                .copied()
                .collect();
            if !found_keys.is_empty() {
                let _ = writeln!(out, "  Private keys: {}", found_keys.join(", "));
            } else {
                out.push_str("  Private keys: none found\n");
            }

            let config_path = ssh_dir.join("config");
            if config_path.exists() {
                out.push_str("\n=== SSH config hosts ===\n");
                match fs::read_to_string(&config_path) {
                    Ok(content) => {
                        let mut hosts: Vec<(String, Vec<String>)> = Vec::new();
                        let mut current: Option<(String, Vec<String>)> = None;
                        for line in content.lines() {
                            let t = line.trim();
                            if t.is_empty() || t.starts_with('#') {
                                continue;
                            }
                            if let Some(host) = t.strip_prefix("Host ") {
                                if let Some(prev) = current.take() {
                                    hosts.push(prev);
                                }
                                current = Some((host.trim().to_string(), Vec::new()));
                            } else if let Some((_, ref mut details)) = current {
                                let tu = t.to_uppercase();
                                if tu.starts_with("HOSTNAME ")
                                    || tu.starts_with("USER ")
                                    || tu.starts_with("PORT ")
                                    || tu.starts_with("IDENTITYFILE ")
                                {
                                    details.push(t.to_string());
                                }
                            }
                        }
                        if let Some(prev) = current {
                            hosts.push(prev);
                        }

                        if hosts.is_empty() {
                            out.push_str("  No Host entries found.\n");
                        } else {
                            for (h, details) in &hosts {
                                if details.is_empty() {
                                    let _ = writeln!(out, "  Host {h}");
                                } else {
                                    let _ = writeln!(out, "  Host {h}  [{}]", details.join(", "));
                                }
                            }
                            let _ = write!(out, "\n  Total configured hosts: {}\n", hosts.len());
                        }
                    }
                    Err(e) => {
                        let _ = writeln!(out, "  Could not read config: {e}");
                    }
                }
            } else {
                out.push_str("  SSH config: not present\n");
            }
        } else {
            out.push_str("~/.ssh: directory not found (no SSH keys configured).\n");
        }
    }

    Ok(out.trim_end().to_string())
}

// ── installed_software ────────────────────────────────────────────────────────

fn inspect_installed_software(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: installed_software\n\n");
    let n = max_entries.clamp(10, 50);

    #[cfg(target_os = "windows")]
    {
        let winget_out = Command::new("winget")
            .args(["list", "--accept-source-agreements"])
            .output();

        if let Ok(o) = winget_out {
            if o.status.success() {
                let raw = String::from_utf8_lossy(&o.stdout);
                let mut header_done = false;
                let mut packages: Vec<&str> = Vec::new();
                for line in raw.lines() {
                    let t = line.trim();
                    if t.starts_with("---") {
                        header_done = true;
                        continue;
                    }
                    if header_done && !t.is_empty() {
                        packages.push(line);
                    }
                }
                let total = packages.len();
                let _ = write!(
                    out,
                    "=== Installed software via winget ({total} packages) ===\n\n"
                );
                for line in packages.iter().take(n) {
                    let _ = writeln!(out, "  {line}");
                }
                if total > n {
                    let _ = write!(out, "\n  ... and {} more packages\n", total - n);
                }
                out.push_str("\nFor full list: winget list\n");
                return Ok(out.trim_end().to_string());
            }
        }

        // Fallback: registry scan
        let script = format!(
            r#"
$apps = @()
$reg_paths = @(
    'HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*',
    'HKLM:\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*',
    'HKCU:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*'
)
foreach ($p in $reg_paths) {{
    try {{
        $apps += Get-ItemProperty $p -ErrorAction SilentlyContinue |
            Where-Object {{ $_.DisplayName }} |
            Select-Object DisplayName, DisplayVersion, Publisher
    }} catch {{}}
}}
$sorted = $apps | Sort-Object DisplayName -Unique
"TOTAL:" + $sorted.Count
$sorted | Select-Object -First {n} | ForEach-Object {{
    $_.DisplayName + "|" + $_.DisplayVersion + "|" + $_.Publisher
}}
"#
        );
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", &script])
            .output()
        {
            let raw = String::from_utf8_lossy(&o.stdout);
            out.push_str("=== Installed software (registry scan) ===\n");
            let _ = writeln!(out, "  {:<50} {:<18} Publisher", "Name", "Version");
            let _ = writeln!(out, "  {}", "-".repeat(90));
            for line in raw.lines() {
                if let Some(rest) = line.strip_prefix("TOTAL:") {
                    let total: usize = rest.trim().parse().unwrap_or(0);
                    let _ = write!(out, "  (Total: {total}, showing first {n})\n\n");
                } else if !line.trim().is_empty() {
                    let mut it = line.splitn(3, '|');
                    let name = it.next().map(str::trim).unwrap_or("");
                    let ver = it.next().map(str::trim).unwrap_or("");
                    let pub_ = it.next().map(str::trim).unwrap_or("");
                    let _ = writeln!(out, "  {:<50} {:<18} {pub_}", name, ver);
                }
            }
        } else {
            out.push_str(
                "Could not query installed software (winget and registry scan both failed).\n",
            );
        }
    }

    #[cfg(target_os = "linux")]
    {
        let mut found = false;
        if let Ok(o) = Command::new("dpkg").args(["--get-selections"]).output() {
            if o.status.success() {
                let raw = String::from_utf8_lossy(&o.stdout);
                let installed: Vec<&str> = raw.lines().filter(|l| l.contains("install")).collect();
                let total = installed.len();
                let _ = write!(out, "=== Installed packages via dpkg ({total}) ===\n");
                for line in installed.iter().take(n) {
                    let _ = write!(out, "  {}\n", line.trim());
                }
                if total > n {
                    let _ = write!(out, "  ... and {} more\n", total - n);
                }
                out.push_str("\nFor full list: dpkg --get-selections | grep install\n");
                found = true;
            }
        }
        if !found {
            if let Ok(o) = Command::new("rpm")
                .args(["-qa", "--queryformat", "%{NAME} %{VERSION}\n"])
                .output()
            {
                if o.status.success() {
                    let raw = String::from_utf8_lossy(&o.stdout);
                    let lines: Vec<&str> = raw.lines().collect();
                    let total = lines.len();
                    let _ = write!(out, "=== Installed packages via rpm ({total}) ===\n");
                    for line in lines.iter().take(n) {
                        let _ = write!(out, "  {line}\n");
                    }
                    if total > n {
                        let _ = write!(out, "  ... and {} more\n", total - n);
                    }
                    found = true;
                }
            }
        }
        if !found {
            if let Ok(o) = Command::new("pacman").args(["-Q"]).output() {
                if o.status.success() {
                    let raw = String::from_utf8_lossy(&o.stdout);
                    let lines: Vec<&str> = raw.lines().collect();
                    let total = lines.len();
                    let _ = write!(out, "=== Installed packages via pacman ({total}) ===\n");
                    for line in lines.iter().take(n) {
                        let _ = write!(out, "  {line}\n");
                    }
                    if total > n {
                        let _ = write!(out, "  ... and {} more\n", total - n);
                    }
                    found = true;
                }
            }
        }
        if !found {
            out.push_str("No package manager found (tried dpkg, rpm, pacman).\n");
        }
    }

    #[cfg(target_os = "macos")]
    {
        if let Ok(o) = Command::new("brew").args(["list", "--versions"]).output() {
            if o.status.success() {
                let raw = String::from_utf8_lossy(&o.stdout);
                let lines: Vec<&str> = raw.lines().collect();
                let total = lines.len();
                let _ = write!(out, "=== Homebrew packages ({total}) ===\n");
                for line in lines.iter().take(n) {
                    let _ = write!(out, "  {line}\n");
                }
                if total > n {
                    let _ = write!(out, "  ... and {} more\n", total - n);
                }
                out.push_str("\nFor full list: brew list --versions\n");
            }
        } else {
            out.push_str("Homebrew not found.\n");
        }
        if let Ok(o) = Command::new("mas").args(["list"]).output() {
            if o.status.success() {
                let raw = String::from_utf8_lossy(&o.stdout);
                let lines: Vec<&str> = raw.lines().collect();
                let _ = write!(out, "\n=== Mac App Store apps ({}) ===\n", lines.len());
                for line in lines.iter().take(n) {
                    let _ = write!(out, "  {line}\n");
                }
            }
        }
    }

    Ok(out.trim_end().to_string())
}

// ── git_config ────────────────────────────────────────────────────────────────

fn inspect_git_config() -> Result<String, String> {
    let mut out = String::from("Host inspection: git_config\n\n");

    if let Ok(o) = Command::new("git").args(["--version"]).output() {
        let ver = String::from_utf8_lossy(&o.stdout).trim().to_string();
        let _ = write!(out, "Git: {ver}\n\n");
    } else {
        out.push_str("Git: not found on PATH.\n");
        return Ok(out.trim_end().to_string());
    }

    if let Ok(o) = Command::new("git")
        .args(["config", "--global", "--list"])
        .output()
    {
        if o.status.success() {
            let raw = String::from_utf8_lossy(&o.stdout);
            let mut pairs: Vec<(String, String)> = raw
                .lines()
                .filter_map(|l| {
                    let mut parts = l.splitn(2, '=');
                    let k = parts.next()?.trim().to_string();
                    let v = parts.next().unwrap_or("").trim().to_string();
                    Some((k, v))
                })
                .collect();
            pairs.sort_by(|a, b| a.0.cmp(&b.0));

            out.push_str("=== Global git config ===\n");

            let sections: &[(&str, &[&str])] = &[
                ("Identity", &["user.name", "user.email", "user.signingkey"]),
                (
                    "Core",
                    &[
                        "core.editor",
                        "core.autocrlf",
                        "core.eol",
                        "core.ignorecase",
                        "core.filemode",
                    ],
                ),
                (
                    "Commit/Signing",
                    &[
                        "commit.gpgsign",
                        "tag.gpgsign",
                        "gpg.format",
                        "gpg.ssh.allowedsignersfile",
                    ],
                ),
                (
                    "Push/Pull",
                    &[
                        "push.default",
                        "push.autosetupremote",
                        "pull.rebase",
                        "pull.ff",
                    ],
                ),
                ("Credential", &["credential.helper"]),
                ("Branch", &["init.defaultbranch", "branch.autosetuprebase"]),
            ];

            let mut shown_keys: HashSet<String> = HashSet::new();
            for (section, keys) in sections {
                let mut section_lines: Vec<String> = Vec::new();
                for key in *keys {
                    if let Some((k, v)) = pairs.iter().find(|(kk, _)| kk == key) {
                        section_lines.push(format!("  {k} = {v}"));
                        shown_keys.insert(k.clone());
                    }
                }
                if !section_lines.is_empty() {
                    let _ = write!(out, "\n[{section}]\n");
                    for line in section_lines {
                        let _ = writeln!(out, "{line}");
                    }
                }
            }

            let other: Vec<&(String, String)> = pairs
                .iter()
                .filter(|(k, _)| !shown_keys.contains(k) && !k.starts_with("alias."))
                .collect();
            if !other.is_empty() {
                out.push_str("\n[Other]\n");
                for (k, v) in other.iter().take(20) {
                    let _ = writeln!(out, "  {k} = {v}");
                }
                if other.len() > 20 {
                    let _ = writeln!(out, "  ... and {} more", other.len() - 20);
                }
            }

            let _ = write!(out, "\nTotal global config keys: {}\n", pairs.len());
        } else {
            out.push_str("No global git config found.\n");
            out.push_str("Set up with:\n");
            out.push_str("  git config --global user.name \"Your Name\"\n");
            out.push_str("  git config --global user.email \"you@example.com\"\n");
        }
    }

    if let Ok(o) = Command::new("git")
        .args(["config", "--local", "--list"])
        .output()
    {
        if o.status.success() {
            let raw = String::from_utf8_lossy(&o.stdout);
            let lines: Vec<&str> = raw.lines().filter(|l| !l.trim().is_empty()).collect();
            if !lines.is_empty() {
                let _ = write!(out, "\n=== Local repo config ({} keys) ===\n", lines.len());
                for line in lines.iter().take(15) {
                    let _ = writeln!(out, "  {line}");
                }
                if lines.len() > 15 {
                    let _ = writeln!(out, "  ... and {} more", lines.len() - 15);
                }
            }
        }
    }

    if let Ok(o) = Command::new("git")
        .args(["config", "--global", "--get-regexp", r"alias\."])
        .output()
    {
        if o.status.success() {
            let raw = String::from_utf8_lossy(&o.stdout);
            let aliases: Vec<&str> = raw.lines().filter(|l| !l.trim().is_empty()).collect();
            if !aliases.is_empty() {
                let _ = write!(out, "\n=== Git aliases ({}) ===\n", aliases.len());
                for a in aliases.iter().take(20) {
                    let _ = writeln!(out, "  {a}");
                }
                if aliases.len() > 20 {
                    let _ = writeln!(out, "  ... and {} more", aliases.len() - 20);
                }
            }
        }
    }

    Ok(out.trim_end().to_string())
}

// ── databases ─────────────────────────────────────────────────────────────────

fn inspect_databases() -> Result<String, String> {
    let mut out = String::from("Host inspection: databases\n\n");
    out.push_str("Scanning for local database engines (service state, port, version)...\n\n");

    struct DbEngine {
        name: &'static str,
        service_names: &'static [&'static str],
        default_port: u16,
        cli_name: &'static str,
        cli_version_args: &'static [&'static str],
    }

    let engines: &[DbEngine] = &[
        DbEngine {
            name: "PostgreSQL",
            service_names: &[
                "postgresql",
                "postgresql-x64-14",
                "postgresql-x64-15",
                "postgresql-x64-16",
                "postgresql-x64-17",
            ],

            default_port: 5432,
            cli_name: "psql",
            cli_version_args: &["--version"],
        },
        DbEngine {
            name: "MySQL",
            service_names: &["mysql", "mysql80", "mysql57"],

            default_port: 3306,
            cli_name: "mysql",
            cli_version_args: &["--version"],
        },
        DbEngine {
            name: "MariaDB",
            service_names: &["mariadb", "mariadb.exe"],

            default_port: 3306,
            cli_name: "mariadb",
            cli_version_args: &["--version"],
        },
        DbEngine {
            name: "MongoDB",
            service_names: &["mongodb", "mongod"],

            default_port: 27017,
            cli_name: "mongod",
            cli_version_args: &["--version"],
        },
        DbEngine {
            name: "Redis",
            service_names: &["redis", "redis-server"],

            default_port: 6379,
            cli_name: "redis-server",
            cli_version_args: &["--version"],
        },
        DbEngine {
            name: "SQL Server",
            service_names: &["mssqlserver", "mssql$sqlexpress", "mssql$localdb"],

            default_port: 1433,
            cli_name: "sqlcmd",
            cli_version_args: &["-?"],
        },
        DbEngine {
            name: "SQLite",
            service_names: &[], // no service — file-based

            default_port: 0, // no port — file-based
            cli_name: "sqlite3",
            cli_version_args: &["--version"],
        },
        DbEngine {
            name: "CouchDB",
            service_names: &["couchdb", "apache-couchdb"],

            default_port: 5984,
            cli_name: "couchdb",
            cli_version_args: &["--version"],
        },
        DbEngine {
            name: "Cassandra",
            service_names: &["cassandra"],

            default_port: 9042,
            cli_name: "cqlsh",
            cli_version_args: &["--version"],
        },
        DbEngine {
            name: "Elasticsearch",
            service_names: &["elasticsearch-service-x64", "elasticsearch"],

            default_port: 9200,
            cli_name: "elasticsearch",
            cli_version_args: &["--version"],
        },
    ];

    // Helper: check if port is listening
    fn port_listening(port: u16) -> bool {
        if port == 0 {
            return false;
        }
        // Use netstat-style check via connecting
        std::net::TcpStream::connect_timeout(
            &std::net::SocketAddr::from(([127, 0, 0, 1], port)),
            std::time::Duration::from_millis(150),
        )
        .is_ok()
    }

    let mut found_any = false;

    for engine in engines {
        let mut status_parts: Vec<String> = Vec::new();
        let mut detected = false;

        // 1. CLI version check (fastest — works cross-platform)
        let version = Command::new(engine.cli_name)
            .args(engine.cli_version_args)
            .output()
            .ok()
            .and_then(|o| {
                let combined = if o.stdout.is_empty() {
                    String::from_utf8_lossy(&o.stderr).trim().to_string()
                } else {
                    String::from_utf8_lossy(&o.stdout).trim().to_string()
                };
                // Take just the first line
                combined.lines().next().map(|l| l.trim().to_string())
            });

        if let Some(ref ver) = version {
            if !ver.is_empty() {
                status_parts.push(format!("version: {ver}"));
                detected = true;
            }
        }

        // 2. Port check
        if engine.default_port > 0 && port_listening(engine.default_port) {
            status_parts.push(format!("listening on :{}", engine.default_port));
            detected = true;
        } else if engine.default_port > 0 && detected {
            status_parts.push(format!("not listening on :{}", engine.default_port));
        }

        // 3. Windows service check
        #[cfg(target_os = "windows")]
        {
            if !engine.service_names.is_empty() {
                let service_list = engine.service_names.join("','");
                let script = format!(
                    r#"$names = @('{}'); foreach ($n in $names) {{ $s = Get-Service -Name $n -ErrorAction SilentlyContinue; if ($s) {{ $n + ':' + $s.Status; break }} }}"#,
                    service_list
                );
                if let Ok(o) = Command::new("powershell")
                    .args(["-NoProfile", "-Command", &script])
                    .output()
                {
                    let text = String::from_utf8_lossy(&o.stdout).trim().to_string();
                    if !text.is_empty() {
                        let mut it = text.splitn(2, ':');
                        let svc_name = it.next().map(str::trim).unwrap_or("");
                        let svc_state = it.next().map(str::trim).unwrap_or("unknown");
                        status_parts.push(format!("service '{svc_name}': {svc_state}"));
                        detected = true;
                    }
                }
            }
        }

        // 4. Linux/macOS systemctl / launchctl check
        #[cfg(not(target_os = "windows"))]
        {
            for svc in engine.service_names {
                if let Ok(o) = Command::new("systemctl").args(["is-active", svc]).output() {
                    let state = String::from_utf8_lossy(&o.stdout).trim().to_string();
                    if !state.is_empty() && state != "inactive" {
                        status_parts.push(format!("systemd '{svc}': {state}"));
                        detected = true;
                        break;
                    }
                }
            }
        }

        if detected {
            found_any = true;
            let label = if engine.default_port > 0 {
                format!("{} (default port: {})", engine.name, engine.default_port)
            } else {
                format!("{} (file-based, no port)", engine.name)
            };
            let _ = writeln!(out, "[FOUND] {label}");
            for part in &status_parts {
                let _ = writeln!(out, "  {part}");
            }
            out.push('\n');
        }
    }

    if !found_any {
        out.push_str("No local database engines detected.\n");
        out.push_str("(Checked: PostgreSQL, MySQL, MariaDB, MongoDB, Redis, SQL Server, SQLite, CouchDB, Cassandra, Elasticsearch)\n\n");
        out.push_str(
            "Note: databases running inside Docker containers are listed under topic='docker'.\n",
        );
    } else {
        out.push_str("---\n");
        out.push_str(
            "Note: databases running inside Docker containers are listed under topic='docker'.\n",
        );
        out.push_str("This topic checks service state and port reachability only — no credentials or queries are used.\n");
    }

    Ok(out.trim_end().to_string())
}

// ── user_accounts ─────────────────────────────────────────────────────────────

fn inspect_user_accounts(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: user_accounts\n\n");

    #[cfg(target_os = "windows")]
    {
        let users_out = Command::new("powershell")
            .args([
                "-NoProfile", "-NonInteractive", "-Command",
                "Get-LocalUser | ForEach-Object { $logon = if ($_.LastLogon) { $_.LastLogon.ToString('yyyy-MM-dd HH:mm') } else { 'never' }; \"  $($_.Name) | Enabled: $($_.Enabled) | LastLogon: $logon | PwdRequired: $($_.PasswordRequired) | $($_.Description)\" }",
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();

        out.push_str("=== Local User Accounts ===\n");
        if users_out.trim().is_empty() {
            out.push_str("  (requires elevation or Get-LocalUser unavailable)\n");
        } else {
            for line in users_out.lines().take(max_entries) {
                if !line.trim().is_empty() {
                    out.push_str(line);
                    out.push('\n');
                }
            }
        }

        let admins_out = Command::new("powershell")
            .args([
                "-NoProfile", "-NonInteractive", "-Command",
                "Get-LocalGroupMember -Group 'Administrators' 2>$null | ForEach-Object { \"  $($_.ObjectClass): $($_.Name)\" }",
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();

        out.push_str("\n=== Administrators Group Members ===\n");
        if admins_out.trim().is_empty() {
            out.push_str("  (unable to retrieve)\n");
        } else {
            out.push_str(admins_out.trim());
            out.push('\n');
        }

        let sessions_out = Command::new("powershell")
            .args([
                "-NoProfile",
                "-NonInteractive",
                "-Command",
                "query user 2>$null",
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();

        out.push_str("\n=== Active Logon Sessions ===\n");
        if sessions_out.trim().is_empty() {
            out.push_str("  (none or requires elevation)\n");
        } else {
            for line in sessions_out.lines().take(max_entries) {
                if !line.trim().is_empty() {
                    let _ = writeln!(out, "  {}", line);
                }
            }
        }

        let is_admin = Command::new("powershell")
            .args([
                "-NoProfile", "-NonInteractive", "-Command",
                "([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)",
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .map(|s| s.trim().to_lowercase())
            .unwrap_or_default();

        out.push_str("\n=== Current Session Elevation ===\n");
        let _ = writeln!(
            out,
            "  Running as Administrator: {}",
            if is_admin.contains("true") {
                "YES"
            } else {
                "no"
            }
        );
    }

    #[cfg(not(target_os = "windows"))]
    {
        let who_out = Command::new("who")
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        out.push_str("=== Active Sessions ===\n");
        if who_out.trim().is_empty() {
            out.push_str("  (none)\n");
        } else {
            for line in who_out.lines().take(max_entries) {
                let _ = write!(out, "  {}\n", line);
            }
        }
        let id_out = Command::new("id")
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        let _ = write!(out, "\n=== Current User ===\n  {}\n", id_out.trim());
    }

    Ok(out.trim_end().to_string())
}

// ── audit_policy ──────────────────────────────────────────────────────────────

fn inspect_audit_policy() -> Result<String, String> {
    let mut out = String::from("Host inspection: audit_policy\n\n");

    #[cfg(target_os = "windows")]
    {
        let auditpol_out = Command::new("auditpol")
            .args(["/get", "/category:*"])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();

        if auditpol_out.trim().is_empty()
            || auditpol_out.to_lowercase().contains("access is denied")
        {
            out.push_str("Audit policy requires Administrator elevation to read.\n");
            out.push_str(
                "Run Hematite as Administrator, or check manually: auditpol /get /category:*\n",
            );
        } else {
            out.push_str("=== Windows Audit Policy ===\n");
            let mut any_enabled = false;
            for line in auditpol_out.lines() {
                let trimmed = line.trim();
                if trimmed.is_empty() {
                    continue;
                }
                if trimmed.contains("Success") || trimmed.contains("Failure") {
                    let _ = writeln!(out, "  [ENABLED] {}", trimmed);
                    any_enabled = true;
                } else {
                    let _ = writeln!(out, "  {}", trimmed);
                }
            }
            if !any_enabled {
                out.push_str("\n[WARNING] No audit categories are enabled — security events will not be logged.\n");
                out.push_str(
                    "Minimum recommended: enable Logon/Logoff and Account Logon success+failure.\n",
                );
            }
        }

        let evtlog = Command::new("powershell")
            .args([
                "-NoProfile", "-NonInteractive", "-Command",
                "Get-Service EventLog -ErrorAction SilentlyContinue | Select-Object -ExpandProperty Status",
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .map(|s| s.trim().to_string())
            .unwrap_or_default();

        let _ = write!(
            out,
            "\n=== Windows Event Log Service ===\n  Status: {}\n",
            if evtlog.is_empty() {
                "unknown".to_string()
            } else {
                evtlog
            }
        );
    }

    #[cfg(not(target_os = "windows"))]
    {
        let auditd_status = Command::new("systemctl")
            .args(["is-active", "auditd"])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .map(|s| s.trim().to_string())
            .unwrap_or_else(|| "not found".to_string());

        let _ = write!(out, "=== auditd service ===\n  Status: {}\n", auditd_status);

        if auditd_status == "active" {
            let rules = Command::new("auditctl")
                .args(["-l"])
                .output()
                .ok()
                .and_then(|o| String::from_utf8(o.stdout).ok())
                .unwrap_or_default();
            out.push_str("\n=== Active Audit Rules ===\n");
            if rules.trim().is_empty() || rules.contains("No rules") {
                out.push_str("  No rules configured.\n");
            } else {
                for line in rules.lines() {
                    let _ = write!(out, "  {}\n", line);
                }
            }
        }
    }

    Ok(out.trim_end().to_string())
}

// ── shares ────────────────────────────────────────────────────────────────────

fn inspect_shares(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: shares\n\n");

    #[cfg(target_os = "windows")]
    {
        let smb_out = Command::new("powershell")
            .args([
                "-NoProfile", "-NonInteractive", "-Command",
                "Get-SmbShare | ForEach-Object { \"  $($_.Name) | Path: $($_.Path) | State: $($_.ShareState) | Encrypted: $($_.EncryptData) | $($_.Description)\" }",
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();

        out.push_str("=== SMB Shares (exposed by this machine) ===\n");
        let smb_lines: Vec<&str> = smb_out
            .lines()
            .filter(|l| !l.trim().is_empty())
            .take(max_entries)
            .collect();
        if smb_lines.is_empty() {
            out.push_str("  No SMB shares or unable to retrieve.\n");
        } else {
            for line in &smb_lines {
                let name = line.trim().split('|').next().unwrap_or("").trim();
                if name.ends_with('$') {
                    let _ = writeln!(out, "  {}", line.trim());
                } else {
                    let _ = writeln!(out, "  [CUSTOM] {}", line.trim());
                }
            }
        }

        let smb_security = Command::new("powershell")
            .args([
                "-NoProfile", "-NonInteractive", "-Command",
                "Get-SmbServerConfiguration | ForEach-Object { \"  SMB1: $($_.EnableSMB1Protocol) | SMB2: $($_.EnableSMB2Protocol) | Signing Required: $($_.RequireSecuritySignature) | Encryption: $($_.EncryptData)\" }",
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();

        out.push_str("\n=== SMB Server Security Settings ===\n");
        if smb_security.trim().is_empty() {
            out.push_str("  (unable to retrieve)\n");
        } else {
            out.push_str(smb_security.trim());
            out.push('\n');
            if smb_security.to_lowercase().contains("smb1: true") {
                out.push_str("  [WARNING] SMB1 is ENABLED — disable it: Set-SmbServerConfiguration -EnableSMB1Protocol $false -Force\n");
            }
        }

        let drives_out = Command::new("powershell")
            .args([
                "-NoProfile", "-NonInteractive", "-Command",
                "Get-PSDrive -PSProvider FileSystem | Where-Object { $_.DisplayRoot } | ForEach-Object { \"  $($_.Name): -> $($_.DisplayRoot)\" }",
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();

        out.push_str("\n=== Mapped Network Drives ===\n");
        if drives_out.trim().is_empty() {
            out.push_str("  None.\n");
        } else {
            for line in drives_out.lines().take(max_entries) {
                if !line.trim().is_empty() {
                    out.push_str(line);
                    out.push('\n');
                }
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let smb_conf = std::fs::read_to_string("/etc/samba/smb.conf").unwrap_or_default();
        out.push_str("=== Samba Config (/etc/samba/smb.conf) ===\n");
        if smb_conf.is_empty() {
            out.push_str("  Not found or Samba not installed.\n");
        } else {
            for line in smb_conf.lines().take(max_entries) {
                let _ = write!(out, "  {}\n", line);
            }
        }
        let nfs_exports = std::fs::read_to_string("/etc/exports").unwrap_or_default();
        out.push_str("\n=== NFS Exports (/etc/exports) ===\n");
        if nfs_exports.is_empty() {
            out.push_str("  Not configured.\n");
        } else {
            for line in nfs_exports.lines().take(max_entries) {
                let _ = write!(out, "  {}\n", line);
            }
        }
    }

    Ok(out.trim_end().to_string())
}

// ── dns_servers ───────────────────────────────────────────────────────────────

fn inspect_dns_servers() -> Result<String, String> {
    let mut out = String::from("Host inspection: dns_servers\n\n");

    #[cfg(target_os = "windows")]
    {
        let dns_out = Command::new("powershell")
            .args([
                "-NoProfile", "-NonInteractive", "-Command",
                "Get-DnsClientServerAddress | Where-Object { $_.ServerAddresses.Count -gt 0 } | ForEach-Object { $addrs = $_.ServerAddresses -join ', '; \"  $($_.InterfaceAlias) (AF $($_.AddressFamily)): $addrs\" }",
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();

        out.push_str("=== Configured DNS Resolvers (per adapter) ===\n");
        if dns_out.trim().is_empty() {
            out.push_str("  (unable to retrieve)\n");
        } else {
            for line in dns_out.lines() {
                if line.trim().is_empty() {
                    continue;
                }
                let mut annotation = "";
                if line.contains("8.8.8.8") || line.contains("8.8.4.4") {
                    annotation = "  <- Google Public DNS";
                } else if line.contains("1.1.1.1") || line.contains("1.0.0.1") {
                    annotation = "  <- Cloudflare DNS";
                } else if line.contains("9.9.9.9") {
                    annotation = "  <- Quad9";
                } else if line.contains("208.67.222") || line.contains("208.67.220") {
                    annotation = "  <- OpenDNS";
                }
                out.push_str(line);
                out.push_str(annotation);
                out.push('\n');
            }
        }

        let doh_out = Command::new("powershell")
            .args([
                "-NoProfile", "-NonInteractive", "-Command",
                "Get-DnsClientDohServerAddress 2>$null | ForEach-Object { \"  $($_.ServerAddress): $($_.DohTemplate)\" }",
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();

        out.push_str("\n=== DNS over HTTPS (DoH) ===\n");
        if doh_out.trim().is_empty() {
            out.push_str("  Not configured (plain DNS).\n");
        } else {
            out.push_str(doh_out.trim());
            out.push('\n');
        }

        let suffixes = Command::new("powershell")
            .args([
                "-NoProfile", "-NonInteractive", "-Command",
                "Get-DnsClientGlobalSetting | Select-Object -ExpandProperty SuffixSearchList | ForEach-Object { \"  $_\" }",
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();

        if !suffixes.trim().is_empty() {
            out.push_str("\n=== DNS Search Suffix List ===\n");
            out.push_str(suffixes.trim());
            out.push('\n');
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let resolv = std::fs::read_to_string("/etc/resolv.conf").unwrap_or_default();
        out.push_str("=== /etc/resolv.conf ===\n");
        if resolv.is_empty() {
            out.push_str("  Not found.\n");
        } else {
            for line in resolv.lines() {
                if !line.trim().is_empty() && !line.starts_with('#') {
                    let _ = write!(out, "  {}\n", line);
                }
            }
        }
        let resolved_out = Command::new("resolvectl")
            .args(["status", "--no-pager"])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        if !resolved_out.is_empty() {
            out.push_str("\n=== systemd-resolved ===\n");
            for line in resolved_out.lines().take(30) {
                let _ = write!(out, "  {}\n", line);
            }
        }
    }

    Ok(out.trim_end().to_string())
}

fn inspect_bitlocker() -> Result<String, String> {
    let mut out = String::from("Host inspection: bitlocker\n\n");

    #[cfg(target_os = "windows")]
    {
        let ps_cmd = "Get-BitLockerVolume | Select-Object MountPoint, VolumeStatus, ProtectionStatus, EncryptionPercentage | ForEach-Object { \"$($_.MountPoint) [$($_.VolumeStatus)] Protection:$($_.ProtectionStatus) ($($_.EncryptionPercentage)%)\" }";
        let output = Command::new("powershell")
            .args(["-NoProfile", "-NonInteractive", "-Command", ps_cmd])
            .output()
            .map_err(|e| format!("Failed to execute PowerShell: {e}"))?;

        let stdout = String::from_utf8(output.stdout).unwrap_or_default();
        let stderr = String::from_utf8(output.stderr).unwrap_or_default();

        if !stdout.trim().is_empty() {
            out.push_str("=== BitLocker Volumes ===\n");
            for line in stdout.lines() {
                let _ = writeln!(out, "  {}", line);
            }
        } else if !stderr.trim().is_empty() {
            if stderr.contains("Access is denied") {
                out.push_str("Error: Access denied. BitLocker diagnostics require Administrator elevation.\n");
            } else {
                let _ = writeln!(out, "Error retrieving BitLocker info: {}", stderr.trim());
            }
        } else {
            out.push_str("No BitLocker volumes detected or access denied.\n");
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        out.push_str(
            "BitLocker is a Windows-specific technology. Checking for LUKS/dm-crypt...\n\n",
        );
        let lsblk = Command::new("lsblk")
            .args(["-f", "-o", "NAME,FSTYPE,MOUNTPOINT"])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        if lsblk.contains("crypto_LUKS") {
            out.push_str("=== LUKS Encrypted Volumes ===\n");
            for line in lsblk.lines().filter(|l| l.contains("crypto_LUKS")) {
                let _ = write!(out, "  {}\n", line);
            }
        } else {
            out.push_str("No LUKS encrypted volumes detected via lsblk.\n");
        }
    }

    Ok(out.trim_end().to_string())
}

fn inspect_rdp() -> Result<String, String> {
    let mut out = String::from("Host inspection: rdp\n\n");

    #[cfg(target_os = "windows")]
    {
        let reg_path = "HKLM:\\System\\CurrentControlSet\\Control\\Terminal Server";
        let f_deny = Command::new("powershell")
            .args([
                "-NoProfile",
                "-Command",
                &format!("(Get-ItemProperty '{}').fDenyTSConnections", reg_path),
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default()
            .trim()
            .to_string();

        let status = if f_deny == "0" { "ENABLED" } else { "DISABLED" };
        let _ = writeln!(out, "=== RDP Status: {} ===", status);

        let port = Command::new("powershell").args(["-NoProfile", "-Command", "Get-ItemProperty 'HKLM:\\System\\CurrentControlSet\\Control\\Terminal Server\\WinStations\\RDP-Tcp' -Name PortNumber | Select-Object -ExpandProperty PortNumber"])
            .output().ok().and_then(|o| String::from_utf8(o.stdout).ok()).unwrap_or_default().trim().to_string();
        let _ = writeln!(
            out,
            "  Port: {}",
            if port.is_empty() {
                "3389 (default)"
            } else {
                &port
            }
        );

        let nla = Command::new("powershell")
            .args([
                "-NoProfile",
                "-Command",
                &format!("(Get-ItemProperty '{}').UserAuthentication", reg_path),
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default()
            .trim()
            .to_string();
        let _ = writeln!(
            out,
            "  NLA Required: {}",
            if nla == "1" { "Yes" } else { "No" }
        );

        let rdp_tcp_path =
            "HKLM:\\System\\CurrentControlSet\\Control\\Terminal Server\\WinStations\\RDP-Tcp";
        let sec_layer = Command::new("powershell")
            .args([
                "-NoProfile",
                "-Command",
                &format!("(Get-ItemProperty '{}').SecurityLayer", rdp_tcp_path),
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default()
            .trim()
            .to_string();
        let sec_label = match sec_layer.as_str() {
            "0" => "RDP Security (no SSL)",
            "1" => "Negotiate (prefer TLS)",
            "2" => "SSL/TLS required",
            _ => &sec_layer,
        };
        let _ = writeln!(out, "  Security Layer: {} ({})", sec_layer, sec_label);

        let enc_level = Command::new("powershell")
            .args([
                "-NoProfile",
                "-Command",
                &format!("(Get-ItemProperty '{}').MinEncryptionLevel", rdp_tcp_path),
            ])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default()
            .trim()
            .to_string();
        let enc_label = match enc_level.as_str() {
            "1" => "Low",
            "2" => "Client Compatible",
            "3" => "High",
            "4" => "FIPS Compliant",
            _ => "Unknown",
        };
        let _ = writeln!(out, "  Encryption Level: {} ({})", enc_level, enc_label);

        out.push_str("\n=== Active Sessions ===\n");
        let qwinsta = Command::new("qwinsta")
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        if qwinsta.trim().is_empty() {
            out.push_str("  No active sessions listed.\n");
        } else {
            for line in qwinsta.lines() {
                let _ = writeln!(out, "  {}", line);
            }
        }

        out.push_str("\n=== Firewall Rule Check ===\n");
        let fw = Command::new("powershell").args(["-NoProfile", "-Command", "Get-NetFirewallRule -DisplayName '*Remote Desktop*' -Enabled True | Select-Object DisplayName, Action, Direction | ForEach-Object { \"  $($_.DisplayName): $($_.Action) ($($_.Direction))\" }"])
            .output().ok().and_then(|o| String::from_utf8(o.stdout).ok()).unwrap_or_default();
        if fw.trim().is_empty() {
            out.push_str("  No enabled RDP firewall rules found.\n");
        } else {
            out.push_str(fw.trim_end());
            out.push('\n');
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        out.push_str("Checking for common RDP/VNC listeners (3389, 5900-5905)...\n");
        let ss = Command::new("ss")
            .args(["-tlnp"])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        let matches: Vec<&str> = ss
            .lines()
            .filter(|l| l.contains(":3389") || l.contains(":590"))
            .collect();
        if matches.is_empty() {
            out.push_str("  No RDP/VNC listeners detected via 'ss'.\n");
        } else {
            for m in matches {
                let _ = write!(out, "  {}\n", m);
            }
        }
    }

    Ok(out.trim_end().to_string())
}

fn inspect_shadow_copies() -> Result<String, String> {
    let mut out = String::from("Host inspection: shadow_copies\n\n");

    #[cfg(target_os = "windows")]
    {
        let output = Command::new("vssadmin")
            .args(["list", "shadows"])
            .output()
            .map_err(|e| format!("Failed to run vssadmin: {e}"))?;
        let stdout = String::from_utf8(output.stdout).unwrap_or_default();

        if stdout.contains("No items found") || stdout.trim().is_empty() {
            out.push_str("No Volume Shadow Copies found.\n");
        } else {
            out.push_str("=== Volume Shadow Copies ===\n");
            for line in stdout.lines().take(50) {
                if line.contains("Creation Time:")
                    || line.contains("Contents:")
                    || line.contains("Volume Name:")
                {
                    let _ = writeln!(out, "  {}", line.trim());
                }
            }
        }

        // Most recent snapshot age
        let age_script = r#"
try {
    $snaps = Get-WmiObject Win32_ShadowCopy -ErrorAction SilentlyContinue | Sort-Object InstallDate -Descending
    if ($snaps) {
        $newest = $snaps[0]
        $created = [Management.ManagementDateTimeConverter]::ToDateTime($newest.InstallDate)
        $age = [math]::Round(([datetime]::Now - $created).TotalDays, 1)
        $count = @($snaps).Count
        "Most recent snapshot: $($created.ToString('yyyy-MM-dd HH:mm'))  ($age days ago)  — $count total snapshots"
    } else { "No snapshots found via WMI." }
} catch { "WMI snapshot query unavailable: $_" }
"#;
        if let Ok(age_out) = Command::new("powershell")
            .args(["-NoProfile", "-Command", age_script])
            .output()
        {
            let age_text = String::from_utf8_lossy(&age_out.stdout).trim().to_string();
            if !age_text.is_empty() {
                out.push_str("\n=== Snapshot Age ===\n");
                let _ = writeln!(out, "  {}", age_text);
            }
        }

        out.push_str("\n=== Shadow Copy Storage ===\n");
        let storage_out = Command::new("vssadmin")
            .args(["list", "shadowstorage"])
            .output()
            .ok();
        if let Some(o) = storage_out {
            let stdout = String::from_utf8(o.stdout).unwrap_or_default();
            for line in stdout.lines() {
                if line.contains("Used Shadow Copy Storage space:")
                    || line.contains("Max Shadow Copy Storage space:")
                {
                    let _ = writeln!(out, "  {}", line.trim());
                }
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        out.push_str("Checking for LVM snapshots or Btrfs subvolumes...\n\n");
        let lvs = Command::new("lvs")
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        if !lvs.is_empty() {
            out.push_str("=== LVM Volumes (checking for snapshots) ===\n");
            out.push_str(&lvs);
        } else {
            out.push_str("No LVM volumes detected.\n");
        }
    }

    Ok(out.trim_end().to_string())
}

fn inspect_pagefile() -> Result<String, String> {
    let mut out = String::from("Host inspection: pagefile\n\n");

    #[cfg(target_os = "windows")]
    {
        let ps_cmd = "Get-CimInstance Win32_PageFileUsage | Select-Object Name, AllocatedBaseSize, CurrentUsage, PeakUsage | ForEach-Object { \"  $($_.Name): $($_.AllocatedBaseSize)MB total, $($_.CurrentUsage)MB used (Peak: $($_.PeakUsage)MB)\" }";
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", ps_cmd])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();

        if output.trim().is_empty() {
            out.push_str("No page files detected (system may be running without a page file or managed differently).\n");
            let managed = Command::new("powershell")
                .args([
                    "-NoProfile",
                    "-Command",
                    "(Get-CimInstance Win32_ComputerSystem).AutomaticManagedPagefile",
                ])
                .output()
                .ok()
                .and_then(|o| String::from_utf8(o.stdout).ok())
                .unwrap_or_default()
                .trim()
                .to_string();
            let _ = writeln!(out, "Automatic Managed Pagefile: {}", managed);
        } else {
            out.push_str("=== Page File Usage ===\n");
            out.push_str(&output);
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        out.push_str("=== Swap Usage (Linux/macOS) ===\n");
        let swap = Command::new("swapon")
            .args(["--show"])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        if swap.is_empty() {
            let free = Command::new("free")
                .args(["-h"])
                .output()
                .ok()
                .and_then(|o| String::from_utf8(o.stdout).ok())
                .unwrap_or_default();
            out.push_str(&free);
        } else {
            out.push_str(&swap);
        }
    }

    Ok(out.trim_end().to_string())
}

fn inspect_windows_features(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: windows_features\n\n");

    #[cfg(target_os = "windows")]
    {
        out.push_str("=== Quick Check: Notable Features ===\n");
        let quick_ps = "Get-WindowsOptionalFeature -Online | Where-Object { $_.FeatureName -match 'IIS|Hyper-V|VirtualMachinePlatform|Subsystem-Linux' -and $_.State -eq 'Enabled' } | Select-Object -ExpandProperty FeatureName";
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", quick_ps])
            .output()
            .ok();

        if let Some(o) = output {
            let stdout = String::from_utf8(o.stdout).unwrap_or_default();
            let stderr = String::from_utf8(o.stderr).unwrap_or_default();

            if !stdout.trim().is_empty() {
                for f in stdout.lines() {
                    let _ = writeln!(out, "  [ENABLED] {}", f);
                }
            } else if stderr.contains("Access is denied") || stderr.contains("requires elevation") {
                out.push_str("  Error: Access denied. Listing Windows Features requires Administrator elevation.\n");
            } else if quick_ps.contains("-Online") && stdout.trim().is_empty() {
                out.push_str(
                    "  No major features (IIS, Hyper-V, WSL) appear enabled in the quick check.\n",
                );
            }
        }

        let _ = write!(
            out,
            "\n=== All Enabled Features (capped at {}) ===\n",
            max_entries
        );
        let all_ps = format!("Get-WindowsOptionalFeature -Online | Where-Object {{$_.State -eq 'Enabled'}} | Select-Object -First {} -ExpandProperty FeatureName", max_entries);
        let all_out = Command::new("powershell")
            .args(["-NoProfile", "-Command", &all_ps])
            .output()
            .ok();
        if let Some(o) = all_out {
            let stdout = String::from_utf8(o.stdout).unwrap_or_default();
            if !stdout.trim().is_empty() {
                out.push_str(&stdout);
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let _ = max_entries;
        out.push_str("Windows Optional Features are Windows-specific. On Linux, check your package manager.\n");
    }

    Ok(out.trim_end().to_string())
}

fn inspect_audio(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: audio\n\n");

    #[cfg(target_os = "windows")]
    {
        let n = max_entries.clamp(5, 20);
        let services = collect_services().unwrap_or_default();
        let core_service_names = ["Audiosrv", "AudioEndpointBuilder"];
        let bluetooth_audio_service_names = ["BthAvctpSvc", "BTAGService"];

        let core_services: Vec<&ServiceEntry> = services
            .iter()
            .filter(|entry| {
                core_service_names
                    .iter()
                    .any(|name| entry.name.eq_ignore_ascii_case(name))
            })
            .collect();
        let bluetooth_audio_services: Vec<&ServiceEntry> = services
            .iter()
            .filter(|entry| {
                bluetooth_audio_service_names
                    .iter()
                    .any(|name| entry.name.eq_ignore_ascii_case(name))
            })
            .collect();

        let probe_script = r#"
$media = @(Get-PnpDevice -Class Media -ErrorAction SilentlyContinue |
    Select-Object FriendlyName, Status, Problem, Class, InstanceId)
$endpoints = @(Get-PnpDevice -Class AudioEndpoint -ErrorAction SilentlyContinue |
    Select-Object FriendlyName, Status, Problem, Class, InstanceId)
$sound = @(Get-CimInstance Win32_SoundDevice -ErrorAction SilentlyContinue |
    Select-Object Name, Status, Manufacturer, PNPDeviceID)
[pscustomobject]@{
    Media = $media
    Endpoints = $endpoints
    SoundDevices = $sound
} | ConvertTo-Json -Compress -Depth 4
"#;
        let probe_raw = Command::new("powershell")
            .args(["-NoProfile", "-NonInteractive", "-Command", probe_script])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        let probe_loaded = !probe_raw.trim().is_empty();
        let probe_value = serde_json::from_str::<Value>(probe_raw.trim()).unwrap_or(Value::Null);

        let endpoints = parse_windows_pnp_devices(probe_value.get("Endpoints"));
        let media_devices = parse_windows_pnp_devices(probe_value.get("Media"));
        let sound_devices = parse_windows_sound_devices(probe_value.get("SoundDevices"));

        let playback_endpoints: Vec<&WindowsPnpDevice> = endpoints
            .iter()
            .filter(|device| !is_microphone_like_name(&device.name))
            .collect();
        let recording_endpoints: Vec<&WindowsPnpDevice> = endpoints
            .iter()
            .filter(|device| is_microphone_like_name(&device.name))
            .collect();
        let bluetooth_endpoints: Vec<&WindowsPnpDevice> = endpoints
            .iter()
            .filter(|device| is_bluetooth_like_name(&device.name))
            .collect();
        let endpoint_problems: Vec<&WindowsPnpDevice> = endpoints
            .iter()
            .filter(|device| windows_device_has_issue(device))
            .collect();
        let media_problems: Vec<&WindowsPnpDevice> = media_devices
            .iter()
            .filter(|device| windows_device_has_issue(device))
            .collect();
        let sound_problems: Vec<&WindowsSoundDevice> = sound_devices
            .iter()
            .filter(|device| windows_sound_device_has_issue(device))
            .collect();

        let mut findings = Vec::with_capacity(4);

        let stopped_core_services: Vec<&ServiceEntry> = core_services
            .iter()
            .copied()
            .filter(|service| !service_is_running(service))
            .collect();
        if !stopped_core_services.is_empty() {
            let names = {
                let mut s = String::new();
                for (i, svc) in stopped_core_services.iter().enumerate() {
                    if i > 0 {
                        s.push_str(", ");
                    }
                    s.push_str(&svc.name);
                }
                s
            };
            findings.push(AuditFinding {
                finding: format!("Core audio services are not running: {names}"),
                impact: "Playback and recording devices can vanish or fail even when the hardware is physically present.".to_string(),
                fix: "Start Windows Audio (`Audiosrv`) and Windows Audio Endpoint Builder, then recheck the endpoint inventory before reinstalling drivers.".to_string(),
            });
        }

        if probe_loaded
            && endpoints.is_empty()
            && media_devices.is_empty()
            && sound_devices.is_empty()
        {
            findings.push(AuditFinding {
                finding: "No audio endpoints or sound hardware were detected in the Windows device inventory.".to_string(),
                impact: "Windows currently has no obvious playback or recording path to hand to apps, so 'no sound' or 'mic missing' behavior is expected.".to_string(),
                fix: "Check whether the audio device is disabled in Device Manager, disconnected at the hardware level, or blocked by a vendor driver package that failed to load.".to_string(),
            });
        }

        if !endpoint_problems.is_empty() || !media_problems.is_empty() || !sound_problems.is_empty()
        {
            let mut problem_labels = Vec::with_capacity(9);
            problem_labels.extend(
                endpoint_problems
                    .iter()
                    .take(3)
                    .map(|device| device.name.clone()),
            );
            problem_labels.extend(
                media_problems
                    .iter()
                    .take(3)
                    .map(|device| device.name.clone()),
            );
            problem_labels.extend(
                sound_problems
                    .iter()
                    .take(3)
                    .map(|device| device.name.clone()),
            );
            findings.push(AuditFinding {
                finding: format!(
                    "Windows reports audio device issues for: {}",
                    problem_labels.join(", ")
                ),
                impact: "Apps can lose speakers, microphones, or headset paths when endpoint or media-class devices are degraded, disabled, or driver-broken.".to_string(),
                fix: "Inspect the affected audio devices in Device Manager, confirm the vendor driver is healthy, and re-enable or reinstall the failing endpoint before troubleshooting apps.".to_string(),
            });
        }

        let stopped_bt_audio_services: Vec<&ServiceEntry> = bluetooth_audio_services
            .iter()
            .copied()
            .filter(|service| !service_is_running(service))
            .collect();
        if !bluetooth_endpoints.is_empty() && !stopped_bt_audio_services.is_empty() {
            let names = {
                let mut s = String::new();
                for (i, svc) in stopped_bt_audio_services.iter().enumerate() {
                    if i > 0 {
                        s.push_str(", ");
                    }
                    s.push_str(&svc.name);
                }
                s
            };
            findings.push(AuditFinding {
                finding: format!(
                    "Bluetooth-branded audio endpoints exist, but Bluetooth audio services are not fully running: {names}"
                ),
                impact: "Headsets may pair yet fail to expose the correct playback or microphone profile, especially after wake or reconnect events.".to_string(),
                fix: "Restart the Bluetooth audio services and reconnect the headset before blaming the application layer.".to_string(),
            });
        }

        out.push_str("=== Findings ===\n");
        if findings.is_empty() {
            out.push_str("- Finding: No obvious Windows audio-service outage or device-inventory failure was detected.\n");
            out.push_str("  Impact: Playback and recording look structurally present from this inspection pass.\n");
            out.push_str("  Fix: If a specific app still has no sound or mic input, compare the endpoint inventory below against that app's selected input/output devices.\n");
        } else {
            for finding in &findings {
                let _ = writeln!(out, "- Finding: {}", finding.finding);
                let _ = writeln!(out, "  Impact: {}", finding.impact);
                let _ = writeln!(out, "  Fix: {}", finding.fix);
            }
        }

        out.push_str("\n=== Audio services ===\n");
        if core_services.is_empty() && bluetooth_audio_services.is_empty() {
            out.push_str(
                "- No Windows audio services were retrieved from the service inventory.\n",
            );
        } else {
            for service in core_services.iter().chain(bluetooth_audio_services.iter()) {
                let _ = writeln!(
                    out,
                    "- {} | Status: {} | Startup: {}",
                    service.name,
                    service.status,
                    service.startup.as_deref().unwrap_or("Unknown")
                );
            }
        }

        out.push_str("\n=== Playback and recording endpoints ===\n");
        if !probe_loaded {
            out.push_str("- Windows endpoint inventory probe returned no data.\n");
        } else if endpoints.is_empty() {
            out.push_str("- No audio endpoints detected.\n");
        } else {
            let _ = writeln!(
                out,
                "- Playback-style endpoints: {} | Recording-style endpoints: {}",
                playback_endpoints.len(),
                recording_endpoints.len()
            );
            for device in playback_endpoints.iter().take(n) {
                let _ = writeln!(
                    out,
                    "- [PLAYBACK] {} | Status: {}{}",
                    device.name,
                    device.status,
                    device
                        .problem
                        .filter(|problem| *problem != 0)
                        .map(|problem| format!(" | ProblemCode: {problem}"))
                        .unwrap_or_default()
                );
            }
            for device in recording_endpoints.iter().take(n) {
                let _ = writeln!(
                    out,
                    "- [MIC] {} | Status: {}{}",
                    device.name,
                    device.status,
                    device
                        .problem
                        .filter(|problem| *problem != 0)
                        .map(|problem| format!(" | ProblemCode: {problem}"))
                        .unwrap_or_default()
                );
            }
        }

        out.push_str("\n=== Sound hardware devices ===\n");
        if sound_devices.is_empty() {
            out.push_str("- No Win32_SoundDevice entries were returned.\n");
        } else {
            for device in sound_devices.iter().take(n) {
                let _ = writeln!(
                    out,
                    "- {} | Status: {}{}",
                    device.name,
                    device.status,
                    device
                        .manufacturer
                        .as_deref()
                        .map(|manufacturer| format!(" | Vendor: {manufacturer}"))
                        .unwrap_or_default()
                );
            }
        }

        out.push_str("\n=== Media-class device inventory ===\n");
        if media_devices.is_empty() {
            out.push_str("- No media-class PnP devices were returned.\n");
        } else {
            for device in media_devices.iter().take(n) {
                let _ = writeln!(
                    out,
                    "- {} | Status: {}{}",
                    device.name,
                    device.status,
                    device
                        .class_name
                        .as_deref()
                        .map(|class_name| format!(" | Class: {class_name}"))
                        .unwrap_or_default()
                );
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let _ = max_entries;
        out.push_str(
            "Audio inspection currently provides deep endpoint and service coverage on Windows.\n",
        );
        out.push_str(
            "On Linux/macOS, ask narrower questions about PipeWire/PulseAudio/ALSA state if you want a dedicated native audit path added.\n",
        );
    }

    Ok(out.trim_end().to_string())
}

fn inspect_bluetooth(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: bluetooth\n\n");

    #[cfg(target_os = "windows")]
    {
        let n = max_entries.clamp(5, 20);
        let services = collect_services().unwrap_or_default();
        let bluetooth_services: Vec<&ServiceEntry> = services
            .iter()
            .filter(|entry| {
                entry.name.eq_ignore_ascii_case("bthserv")
                    || entry.name.eq_ignore_ascii_case("BthAvctpSvc")
                    || entry.name.eq_ignore_ascii_case("BTAGService")
                    || entry.name.starts_with("BluetoothUserService")
                    || entry
                        .display_name
                        .as_deref()
                        .unwrap_or("")
                        .to_ascii_lowercase()
                        .contains("bluetooth")
            })
            .collect();

        let probe_script = r#"
$radios = @(Get-PnpDevice -Class Bluetooth -ErrorAction SilentlyContinue |
    Select-Object FriendlyName, Status, Problem, Class, InstanceId)
$devices = @(Get-PnpDevice -ErrorAction SilentlyContinue |
    Where-Object {
        $_.Class -eq 'Bluetooth' -or
        $_.FriendlyName -match 'Bluetooth' -or
        $_.InstanceId -like 'BTH*'
    } |
    Select-Object FriendlyName, Status, Problem, Class, InstanceId)
$audio = @(Get-PnpDevice -Class AudioEndpoint -ErrorAction SilentlyContinue |
    Where-Object { $_.FriendlyName -match 'Bluetooth|Hands-Free|A2DP' } |
    Select-Object FriendlyName, Status, Problem, Class, InstanceId)
[pscustomobject]@{
    Radios = $radios
    Devices = $devices
    AudioEndpoints = $audio
} | ConvertTo-Json -Compress -Depth 4
"#;
        let probe_raw = Command::new("powershell")
            .args(["-NoProfile", "-NonInteractive", "-Command", probe_script])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        let probe_loaded = !probe_raw.trim().is_empty();
        let probe_value = serde_json::from_str::<Value>(probe_raw.trim()).unwrap_or(Value::Null);

        let radios = parse_windows_pnp_devices(probe_value.get("Radios"));
        let devices = parse_windows_pnp_devices(probe_value.get("Devices"));
        let audio_endpoints = parse_windows_pnp_devices(probe_value.get("AudioEndpoints"));
        let radio_problems: Vec<&WindowsPnpDevice> = radios
            .iter()
            .filter(|device| windows_device_has_issue(device))
            .collect();
        let device_problems: Vec<&WindowsPnpDevice> = devices
            .iter()
            .filter(|device| windows_device_has_issue(device))
            .collect();

        let mut findings = Vec::with_capacity(4);

        if probe_loaded && radios.is_empty() {
            findings.push(AuditFinding {
                finding: "No Bluetooth radio or adapter was detected in the device inventory.".to_string(),
                impact: "Pairing, reconnects, and Bluetooth audio paths cannot work without a healthy local radio.".to_string(),
                fix: "Check whether Bluetooth is disabled in firmware, turned off in Windows, or missing its vendor driver.".to_string(),
            });
        }

        let stopped_bluetooth_services: Vec<&ServiceEntry> = bluetooth_services
            .iter()
            .copied()
            .filter(|service| !service_is_running(service))
            .collect();
        if !stopped_bluetooth_services.is_empty() {
            let names = {
                let mut s = String::new();
                for (i, svc) in stopped_bluetooth_services.iter().enumerate() {
                    if i > 0 {
                        s.push_str(", ");
                    }
                    s.push_str(&svc.name);
                }
                s
            };
            findings.push(AuditFinding {
                finding: format!("Bluetooth-related services are not fully running: {names}"),
                impact: "Discovery, pairing, reconnects, and headset profile switching can all fail even when the adapter appears installed.".to_string(),
                fix: "Start the Bluetooth Support Service first, then reconnect the device and recheck the adapter and endpoint state.".to_string(),
            });
        }

        if !radio_problems.is_empty() || !device_problems.is_empty() {
            let problem_labels = {
                let mut s = String::new();
                for (i, device) in radio_problems
                    .iter()
                    .chain(device_problems.iter())
                    .take(5)
                    .enumerate()
                {
                    if i > 0 {
                        s.push_str(", ");
                    }
                    s.push_str(&device.name);
                }
                s
            };
            findings.push(AuditFinding {
                finding: format!("Windows reports Bluetooth device issues for: {problem_labels}"),
                impact: "A degraded radio or paired-device node can cause pairing loops, sudden disconnects, or one-way headset behavior.".to_string(),
                fix: "Inspect the failing Bluetooth devices in Device Manager, confirm the driver stack is healthy, then remove and re-pair the affected endpoint if needed.".to_string(),
            });
        }

        if !audio_endpoints.is_empty()
            && bluetooth_services
                .iter()
                .any(|service| service.name.eq_ignore_ascii_case("BthAvctpSvc"))
            && bluetooth_services
                .iter()
                .filter(|service| service.name.eq_ignore_ascii_case("BthAvctpSvc"))
                .any(|service| !service_is_running(service))
        {
            findings.push(AuditFinding {
                finding: "Bluetooth audio endpoints exist, but the Bluetooth AVCTP service is not running.".to_string(),
                impact: "Headsets can connect yet expose the wrong audio role or lose media controls and microphone availability.".to_string(),
                fix: "Restart the AVCTP service and reconnect the headset before troubleshooting the app or conferencing tool.".to_string(),
            });
        }

        out.push_str("=== Findings ===\n");
        if findings.is_empty() {
            out.push_str("- Finding: No obvious Bluetooth radio, service, or paired-device failure was detected.\n");
            out.push_str("  Impact: The Bluetooth stack looks structurally healthy from this inspection pass.\n");
            out.push_str("  Fix: If one specific device still fails, focus next on that device's pairing history, driver node, and audio endpoint role.\n");
        } else {
            for finding in &findings {
                let _ = writeln!(out, "- Finding: {}", finding.finding);
                let _ = writeln!(out, "  Impact: {}", finding.impact);
                let _ = writeln!(out, "  Fix: {}", finding.fix);
            }
        }

        out.push_str("\n=== Bluetooth services ===\n");
        if bluetooth_services.is_empty() {
            out.push_str(
                "- No Bluetooth-related services were retrieved from the service inventory.\n",
            );
        } else {
            for service in bluetooth_services.iter().take(n) {
                let _ = writeln!(
                    out,
                    "- {} | Status: {} | Startup: {}",
                    service.name,
                    service.status,
                    service.startup.as_deref().unwrap_or("Unknown")
                );
            }
        }

        out.push_str("\n=== Bluetooth radios and adapters ===\n");
        if !probe_loaded {
            out.push_str("- Windows Bluetooth adapter inventory probe returned no data.\n");
        } else if radios.is_empty() {
            out.push_str("- No Bluetooth radios detected.\n");
        } else {
            for device in radios.iter().take(n) {
                let _ = writeln!(
                    out,
                    "- {} | Status: {}{}",
                    device.name,
                    device.status,
                    device
                        .problem
                        .filter(|problem| *problem != 0)
                        .map(|problem| format!(" | ProblemCode: {problem}"))
                        .unwrap_or_default()
                );
            }
        }

        out.push_str("\n=== Bluetooth-associated devices ===\n");
        if devices.is_empty() {
            out.push_str("- No Bluetooth-associated device nodes detected.\n");
        } else {
            for device in devices.iter().take(n) {
                let _ = writeln!(
                    out,
                    "- {} | Status: {}{}",
                    device.name,
                    device.status,
                    device
                        .class_name
                        .as_deref()
                        .map(|class_name| format!(" | Class: {class_name}"))
                        .unwrap_or_default()
                );
            }
        }

        out.push_str("\n=== Bluetooth audio endpoints ===\n");
        if audio_endpoints.is_empty() {
            out.push_str("- No Bluetooth-branded audio endpoints detected.\n");
        } else {
            for device in audio_endpoints.iter().take(n) {
                let _ = writeln!(
                    out,
                    "- {} | Status: {}{}",
                    device.name,
                    device.status,
                    device
                        .instance_id
                        .as_deref()
                        .map(|instance_id| format!(" | Instance: {instance_id}"))
                        .unwrap_or_default()
                );
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let _ = max_entries;
        out.push_str("Bluetooth inspection currently provides deep service and device coverage on Windows.\n");
        out.push_str(
            "On Linux/macOS, ask a narrower Bluetooth question if you want a dedicated native audit path added.\n",
        );
    }

    Ok(out.trim_end().to_string())
}

fn inspect_printers(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: printers\n\n");

    #[cfg(target_os = "windows")]
    {
        let list = Command::new("powershell").args(["-NoProfile", "-Command", &format!("Get-Printer | Select-Object Name, DriverName, PortName, JobCount | Select-Object -First {} | ForEach-Object {{ \"  $($_.Name) [$($_.DriverName)] (Port: $($_.PortName), Jobs: $($_.JobCount))\" }}", max_entries)])
            .output().ok().and_then(|o| String::from_utf8(o.stdout).ok()).unwrap_or_default();
        if list.trim().is_empty() {
            out.push_str("No printers detected.\n");
        } else {
            out.push_str("=== Installed Printers ===\n");
            out.push_str(&list);
        }

        let jobs = Command::new("powershell").args(["-NoProfile", "-Command", "Get-PrintJob | Select-Object PrinterName, ID, DocumentName, Status | ForEach-Object { \"  [$($_.PrinterName)] Job $($_.ID): $($_.DocumentName) - $($_.Status)\" }"])
            .output().ok().and_then(|o| String::from_utf8(o.stdout).ok()).unwrap_or_default();
        if !jobs.trim().is_empty() {
            out.push_str("\n=== Active Print Jobs ===\n");
            out.push_str(&jobs);
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let _ = max_entries;
        out.push_str("Checking LPSTAT for printers...\n");
        let lpstat = Command::new("lpstat")
            .args(["-p", "-d"])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        if lpstat.is_empty() {
            out.push_str("  No CUPS/LP printers found.\n");
        } else {
            out.push_str(&lpstat);
        }
    }

    Ok(out.trim_end().to_string())
}

fn inspect_winrm() -> Result<String, String> {
    let mut out = String::from("Host inspection: winrm\n\n");

    #[cfg(target_os = "windows")]
    {
        let svc = Command::new("powershell")
            .args(["-NoProfile", "-Command", "(Get-Service WinRM).Status"])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default()
            .trim()
            .to_string();
        let _ = write!(
            out,
            "WinRM Service Status: {}\n\n",
            if svc.is_empty() { "NOT_FOUND" } else { &svc }
        );

        out.push_str("=== WinRM Listeners ===\n");
        let output = Command::new("powershell")
            .args([
                "-NoProfile",
                "-Command",
                "winrm enumerate winrm/config/listener 2>$null",
            ])
            .output()
            .ok();
        if let Some(o) = output {
            let stdout = String::from_utf8(o.stdout).unwrap_or_default();
            let stderr = String::from_utf8(o.stderr).unwrap_or_default();

            if !stdout.trim().is_empty() {
                for line in stdout.lines() {
                    if line.contains("Address =")
                        || line.contains("Transport =")
                        || line.contains("Port =")
                    {
                        let _ = writeln!(out, "  {}", line.trim());
                    }
                }
            } else if stderr.contains("Access is denied") {
                out.push_str("  Error: Access denied to WinRM configuration.\n");
            } else {
                out.push_str("  No listeners configured.\n");
            }
        }

        out.push_str("\n=== PowerShell Remoting Test (Local) ===\n");
        let test_out = Command::new("powershell").args(["-NoProfile", "-Command", "Test-WSMan -ErrorAction SilentlyContinue | Select-Object ProductVersion, Stack | ForEach-Object { \"  SUCCESS: OS Version $($_.ProductVersion) (Stack $($_.Stack))\" }"])
            .output().ok().and_then(|o| String::from_utf8(o.stdout).ok()).unwrap_or_default();
        if test_out.trim().is_empty() {
            out.push_str("  WinRM not responding to local WS-Man requests.\n");
        } else {
            out.push_str(&test_out);
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        out.push_str(
            "WinRM is primarily a Windows technology. Checking for listening port 5985/5986...\n",
        );
        let ss = Command::new("ss")
            .args(["-tln"])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        if ss.contains(":5985") || ss.contains(":5986") {
            out.push_str("  WinRM ports (5985/5986) are listening.\n");
        } else {
            out.push_str("  WinRM ports not detected.\n");
        }
    }

    Ok(out.trim_end().to_string())
}

fn inspect_network_stats(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: network_stats\n\n");

    #[cfg(target_os = "windows")]
    {
        let ps_cmd = format!(
            "$s1 = Get-NetAdapterStatistics -ErrorAction SilentlyContinue | Select-Object Name, ReceivedBytes, SentBytes; \
             Start-Sleep -Milliseconds 250; \
             $s2 = Get-NetAdapterStatistics -ErrorAction SilentlyContinue | Select-Object Name, ReceivedBytes, SentBytes, ReceivedPacketErrors, OutboundPacketErrors | Select-Object -First {}; \
             $s2 | ForEach-Object {{ \
                $name = $_.Name; \
                $prev = $s1 | Where-Object {{ $_.Name -eq $name }}; \
                if ($prev) {{ \
                    $rb = ($_.ReceivedBytes - $prev.ReceivedBytes) / 0.25; \
                    $sb = ($_.SentBytes - $prev.SentBytes) / 0.25; \
                    $rmbps = [math]::Round(($rb * 8) / 1000000, 2); \
                    $smbps = [math]::Round(($sb * 8) / 1000000, 2); \
                    $tr = [math]::Round($_.ReceivedBytes / 1MB, 2); \
                    $tt = [math]::Round($_.SentBytes / 1MB, 2); \
                    \"  $($name): Rate(RX/TX): $($rmbps)/$($smbps) Mbps | Total: $($tr)/$($tt) MB | Errors: $($_.ReceivedPacketErrors)/$($_.OutboundPacketErrors)\" \
                }} \
             }}",
            max_entries
        );
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", &ps_cmd])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        if output.trim().is_empty() {
            out.push_str("No network adapter statistics available.\n");
        } else {
            out.push_str("=== Adapter Throughput (Mbps) & Health ===\n");
            out.push_str(&output);
        }

        let discards = Command::new("powershell").args(["-NoProfile", "-Command", "Get-NetAdapterStatistics | Select-Object Name, ReceivedPacketDiscards, OutboundPacketDiscards | ForEach-Object { if($_.ReceivedPacketDiscards -gt 0 -or $_.OutboundPacketDiscards -gt 0) { \"  $($_.Name): Discards(RX/TX): $($_.ReceivedPacketDiscards)/$($_.OutboundPacketDiscards)\" } }"])
            .output().ok().and_then(|o| String::from_utf8(o.stdout).ok()).unwrap_or_default();
        if !discards.trim().is_empty() {
            out.push_str("\n=== Packet Discards (Non-Zero Only) ===\n");
            out.push_str(&discards);
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let _ = max_entries;
        out.push_str("=== Network Stats (ip -s link) ===\n");
        let ip_s = Command::new("ip")
            .args(["-s", "link"])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        if ip_s.is_empty() {
            let netstat = Command::new("netstat")
                .args(["-i"])
                .output()
                .ok()
                .and_then(|o| String::from_utf8(o.stdout).ok())
                .unwrap_or_default();
            out.push_str(&netstat);
        } else {
            out.push_str(&ip_s);
        }
    }

    Ok(out.trim_end().to_string())
}

fn inspect_udp_ports(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: udp_ports\n\n");

    #[cfg(target_os = "windows")]
    {
        let ps_cmd = format!("Get-NetUDPEndpoint | Select-Object LocalAddress, LocalPort, OwningProcess | Select-Object -First {} | ForEach-Object {{ $proc = (Get-Process -Id $_.OwningProcess -ErrorAction SilentlyContinue).Name; \"  $($_.LocalAddress):$($_.LocalPort) (PID: $($_.OwningProcess) - $($proc))\" }}", max_entries);
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", &ps_cmd])
            .output()
            .ok();

        if let Some(o) = output {
            let stdout = String::from_utf8(o.stdout).unwrap_or_default();
            let stderr = String::from_utf8(o.stderr).unwrap_or_default();

            if !stdout.trim().is_empty() {
                out.push_str("=== UDP Listeners (Local:Port) ===\n");
                for line in stdout.lines() {
                    let mut note = "";
                    if line.contains(":53 ") {
                        note = " [DNS]";
                    } else if line.contains(":67 ") || line.contains(":68 ") {
                        note = " [DHCP]";
                    } else if line.contains(":123 ") {
                        note = " [NTP]";
                    } else if line.contains(":161 ") {
                        note = " [SNMP]";
                    } else if line.contains(":1900 ") {
                        note = " [SSDP/UPnP]";
                    } else if line.contains(":5353 ") {
                        note = " [mDNS]";
                    }

                    let _ = writeln!(out, "{}{}", line, note);
                }
            } else if stderr.contains("Access is denied") {
                out.push_str("Error: Access denied. Full UDP listener details require Administrator elevation.\n");
            } else {
                out.push_str("No UDP listeners detected.\n");
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let ss_out = Command::new("ss")
            .args(["-ulnp"])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        out.push_str("=== UDP Listeners (ss -ulnp) ===\n");
        if ss_out.is_empty() {
            let netstat_out = Command::new("netstat")
                .args(["-ulnp"])
                .output()
                .ok()
                .and_then(|o| String::from_utf8(o.stdout).ok())
                .unwrap_or_default();
            if netstat_out.is_empty() {
                out.push_str("  Neither 'ss' nor 'netstat' available.\n");
            } else {
                for line in netstat_out.lines().take(max_entries) {
                    let _ = write!(out, "  {}\n", line);
                }
            }
        } else {
            for line in ss_out.lines().take(max_entries) {
                let _ = write!(out, "  {}\n", line);
            }
        }
    }

    Ok(out.trim_end().to_string())
}

fn inspect_gpo() -> Result<String, String> {
    let mut out = String::from("Host inspection: gpo\n\n");

    #[cfg(target_os = "windows")]
    {
        let output = Command::new("gpresult")
            .args(["/r", "/scope", "computer"])
            .output()
            .ok();

        if let Some(o) = output {
            let stdout = String::from_utf8(o.stdout).unwrap_or_default();
            let stderr = String::from_utf8(o.stderr).unwrap_or_default();

            if stdout.contains("Applied Group Policy Objects") {
                out.push_str("=== Applied Group Policy Objects (Computer Scope) ===\n");
                let mut capture = false;
                for line in stdout.lines() {
                    if line.contains("Applied Group Policy Objects") {
                        capture = true;
                    } else if capture && line.contains("The following GPOs were not applied") {
                        break;
                    }
                    if capture && !line.trim().is_empty() {
                        let _ = writeln!(out, "  {}", line.trim());
                    }
                }
            } else if stderr.contains("Access is denied") || stdout.contains("Access is denied") {
                out.push_str("Error: Access denied. Group Policy inspection requires Administrator elevation.\n");
            } else {
                out.push_str("No applied Group Policy Objects detected or insufficient permissions to query computer scope.\n");
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        out.push_str("Group Policy (GPO) is a Windows-only topic.\n");
    }

    Ok(out.trim_end().to_string())
}

fn inspect_certificates(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: certificates\n\n");

    #[cfg(target_os = "windows")]
    {
        let ps_cmd = format!(
            "Get-ChildItem -Path Cert:\\LocalMachine\\My | Select-Object Subject, NotAfter, Thumbprint | Select-Object -First {} | ForEach-Object {{ \
                $days = ($_.NotAfter - (Get-Date)).Days; \
                $status = if ($days -lt 0) {{ \"[EXPIRED]\" }} else if ($days -lt 30) {{ \"[EXPIRING SOON ($days days)]\" }} else {{ \"\" }}; \
                \"  $($_.Subject) - Expires: $($_.NotAfter.ToString('yyyy-MM-dd')) $status (Thumb: $($_.Thumbprint.Substring(0,8))...)\" \
            }}", 
            max_entries
        );
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", &ps_cmd])
            .output()
            .ok();

        if let Some(o) = output {
            let stdout = String::from_utf8(o.stdout).unwrap_or_default();
            if !stdout.trim().is_empty() {
                out.push_str("=== Local Machine Certificates (Personal Store) ===\n");
                out.push_str(&stdout);
            } else {
                out.push_str("No certificates found in the Local Machine Personal store.\n");
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let _ = max_entries;
        out.push_str("Host inspection: certificates (Linux/macOS)\n\n");
        // Check standard cert locations
        for path in ["/etc/ssl/certs", "/etc/pki/tls/certs"] {
            if Path::new(path).exists() {
                let _ = write!(out, "  Cert directory found: {}\n", path);
            }
        }
    }

    Ok(out.trim_end().to_string())
}

fn inspect_integrity() -> Result<String, String> {
    let mut out = String::from("Host inspection: integrity\n\n");

    #[cfg(target_os = "windows")]
    {
        let ps_cmd = "Get-ItemProperty 'HKLM:\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Component Based Servicing' | Select-Object Corrupt, AutoRepairNeeded, LastRepairAttempted | ConvertTo-Json";
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", ps_cmd])
            .output()
            .ok();

        if let Some(o) = output {
            let stdout = String::from_utf8(o.stdout).unwrap_or_default();
            if let Ok(val) = serde_json::from_str::<Value>(&stdout) {
                out.push_str("=== Windows Component Store Health (CBS) ===\n");
                let corrupt = val.get("Corrupt").and_then(|v| v.as_u64()).unwrap_or(0);
                let repair = val
                    .get("AutoRepairNeeded")
                    .and_then(|v| v.as_u64())
                    .unwrap_or(0);

                let _ = writeln!(
                    out,
                    "  Corruption Detected: {}",
                    if corrupt != 0 {
                        "YES (SFC/DISM recommended)"
                    } else {
                        "No"
                    }
                );
                let _ = writeln!(
                    out,
                    "  Auto-Repair Needed: {}",
                    if repair != 0 { "YES" } else { "No" }
                );

                if let Some(last) = val.get("LastRepairAttempted").and_then(|v| v.as_u64()) {
                    let _ = writeln!(out, "  Last Repair Attempt: (Raw code: {})", last);
                }
            } else {
                out.push_str("Could not retrieve CBS health from registry. System may be healthy or state is unknown.\n");
            }
        }

        if Path::new("C:\\Windows\\Logs\\CBS\\CBS.log").exists() {
            out.push_str(
                "\nNote: Detailed integrity logs available at C:\\Windows\\Logs\\CBS\\CBS.log\n",
            );
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        out.push_str("System integrity check (Linux)\n\n");
        let pkg_check = Command::new("rpm")
            .args(["-Va"])
            .output()
            .or_else(|_| Command::new("dpkg").args(["--verify"]).output())
            .ok();
        if let Some(o) = pkg_check {
            out.push_str("  Package verification system active.\n");
            if o.status.success() {
                out.push_str("  No major package integrity issues detected.\n");
            }
        }
    }

    Ok(out.trim_end().to_string())
}

fn inspect_domain() -> Result<String, String> {
    let mut out = String::from("Host inspection: domain\n\n");

    #[cfg(target_os = "windows")]
    {
        out.push_str("=== Windows Domain / Workgroup Identity ===\n");
        let ps_cmd = "Get-CimInstance Win32_ComputerSystem | Select-Object Name, Domain, PartOfDomain, Workgroup | ConvertTo-Json";
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", ps_cmd])
            .output()
            .ok();

        if let Some(o) = output {
            let stdout = String::from_utf8(o.stdout).unwrap_or_default();
            if let Ok(val) = serde_json::from_str::<Value>(&stdout) {
                let part_of_domain = val
                    .get("PartOfDomain")
                    .and_then(|v| v.as_bool())
                    .unwrap_or(false);
                let domain = val
                    .get("Domain")
                    .and_then(|v| v.as_str())
                    .unwrap_or("Unknown");
                let workgroup = val
                    .get("Workgroup")
                    .and_then(|v| v.as_str())
                    .unwrap_or("Unknown");

                let _ = writeln!(
                    out,
                    "  Join Status: {}",
                    if part_of_domain {
                        "DOMAIN JOINED"
                    } else {
                        "WORKGROUP"
                    }
                );
                if part_of_domain {
                    let _ = writeln!(out, "  Active Directory Domain: {}", domain);
                } else {
                    let _ = writeln!(out, "  Workgroup Name: {}", workgroup);
                }

                if let Some(name) = val.get("Name").and_then(|v| v.as_str()) {
                    let _ = writeln!(out, "  NetBIOS Name: {}", name);
                }
            } else {
                out.push_str("  Domain identity data unavailable from WMI.\n");
            }
        } else {
            out.push_str("  Domain identity data unavailable from WMI.\n");
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let domainname = Command::new("domainname")
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        out.push_str("=== Linux Domain Identity ===\n");
        if !domainname.trim().is_empty() && domainname.trim() != "(none)" {
            let _ = write!(out, "  NIS/YP Domain: {}\n", domainname.trim());
        } else {
            out.push_str("  No NIS domain configured.\n");
        }
    }

    Ok(out.trim_end().to_string())
}

fn inspect_device_health() -> Result<String, String> {
    let mut out = String::from("Host inspection: device_health\n\n");

    #[cfg(target_os = "windows")]
    {
        let ps_cmd = "Get-CimInstance Win32_PnPEntity | Where-Object { $_.ConfigManagerErrorCode -ne 0 } | Select-Object Name, Status, ConfigManagerErrorCode, Description | ForEach-Object { \"  [ERR:$($_.ConfigManagerErrorCode)] $($_.Name) ($($_.Status)) - $($_.Description)\" }";
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", ps_cmd])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();

        if output.trim().is_empty() {
            out.push_str("All PnP devices report as healthy (no ConfigManager errors detected).\n");
        } else {
            out.push_str("=== Malfunctioning Devices (Yellow Bangs) ===\n");
            out.push_str(&output);
            out.push_str(
                "\nTip: Error codes 10 and 28 usually indicate missing or incompatible drivers.\n",
            );
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        out.push_str("Checking dmesg for hardware errors...\n");
        let dmesg = Command::new("dmesg")
            .args(["--level=err,crit,alert"])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        if dmesg.is_empty() {
            out.push_str("  No critical hardware errors found in dmesg.\n");
        } else {
            for (i, line) in dmesg.lines().take(20).enumerate() {
                if i > 0 {
                    out.push('\n');
                }
                out.push_str(line);
            }
        }
    }

    Ok(out.trim_end().to_string())
}

fn inspect_drivers(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: drivers\n\n");

    #[cfg(target_os = "windows")]
    {
        out.push_str("=== Active System Drivers (CIM Snapshot) ===\n");
        let ps_cmd = format!("Get-CimInstance Win32_SystemDriver | Select-Object Name, Description, State, Status | Select-Object -First {} | ForEach-Object {{ \"  $($_.Name): $($_.State) ($($_.Status)) - $($_.Description)\" }}", max_entries);
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", &ps_cmd])
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();

        if output.trim().is_empty() {
            out.push_str("  No drivers retrieved via WMI.\n");
        } else {
            out.push_str(&output);
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        out.push_str("=== Loaded Kernel Modules (lsmod) ===\n");
        let lsmod = Command::new("lsmod")
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        for (i, line) in lsmod.lines().take(max_entries).enumerate() {
            if i > 0 {
                out.push('\n');
            }
            out.push_str(line);
        }
    }

    Ok(out.trim_end().to_string())
}

fn inspect_peripherals(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: peripherals\n\n");

    #[cfg(target_os = "windows")]
    {
        let _ = max_entries;
        out.push_str("=== USB Controllers & Hubs ===\n");
        let usb = Command::new("powershell").args(["-NoProfile", "-Command", "Get-CimInstance Win32_USBController | ForEach-Object { \"  $($_.Name) ($($_.Status))\" }"])
            .output().ok().and_then(|o| String::from_utf8(o.stdout).ok()).unwrap_or_default();
        out.push_str(if usb.is_empty() {
            "  None detected.\n"
        } else {
            &usb
        });

        out.push_str("\n=== Input Devices (Keyboard/Pointer) ===\n");
        let kb = Command::new("powershell").args(["-NoProfile", "-Command", "Get-CimInstance Win32_Keyboard | ForEach-Object { \"  [KB] $($_.Name) ($($_.Status))\" }"])
            .output().ok().and_then(|o| String::from_utf8(o.stdout).ok()).unwrap_or_default();
        let mouse = Command::new("powershell").args(["-NoProfile", "-Command", "Get-CimInstance Win32_PointingDevice | ForEach-Object { \"  [PTR] $($_.Name) ($($_.Status))\" }"])
            .output().ok().and_then(|o| String::from_utf8(o.stdout).ok()).unwrap_or_default();
        out.push_str(&kb);
        out.push_str(&mouse);

        out.push_str("\n=== Connected Monitors (WMI) ===\n");
        let mon = Command::new("powershell").args(["-NoProfile", "-Command", "Get-CimInstance -Namespace root\\wmi -ClassName WmiMonitorBasicDisplayParams | ForEach-Object { \"  Display ($($_.Active ? 'Active' : 'Inactive'))\" }"])
            .output().ok().and_then(|o| String::from_utf8(o.stdout).ok()).unwrap_or_default();
        out.push_str(if mon.is_empty() {
            "  No active monitors identified via WMI.\n"
        } else {
            &mon
        });
    }

    #[cfg(not(target_os = "windows"))]
    {
        out.push_str("=== Connected USB Devices (lsusb) ===\n");
        let lsusb = Command::new("lsusb")
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        for (i, line) in lsusb.lines().take(max_entries).enumerate() {
            if i > 0 {
                out.push('\n');
            }
            out.push_str(line);
        }
    }

    Ok(out.trim_end().to_string())
}

fn inspect_sessions(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: sessions\n\n");

    #[cfg(target_os = "windows")]
    {
        out.push_str("=== Active Logon Sessions (WMI Snapshot) ===\n");
        let script = r#"Get-CimInstance Win32_LogonSession | ForEach-Object {
    "$($_.LogonId)|$($_.StartTime)|$($_.LogonType)|$($_.AuthenticationPackage)"
}"#;
        if let Ok(o) = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
        {
            let text = String::from_utf8_lossy(&o.stdout);
            let lines: Vec<&str> = text.lines().collect();
            if lines.is_empty() {
                out.push_str("  No active logon sessions enumerated via WMI.\n");
            } else {
                for line in lines
                    .iter()
                    .take(max_entries)
                    .filter(|l| !l.trim().is_empty())
                {
                    let mut it = line.trim().splitn(5, '|');
                    if let (Some(p0), Some(p1), Some(p2), Some(p3)) =
                        (it.next(), it.next(), it.next(), it.next())
                    {
                        let logon_type = match p2 {
                            "2" => "Interactive",
                            "3" => "Network",
                            "4" => "Batch",
                            "5" => "Service",
                            "7" => "Unlock",
                            "8" => "NetworkCleartext",
                            "9" => "NewCredentials",
                            "10" => "RemoteInteractive",
                            "11" => "CachedInteractive",
                            _ => "Other",
                        };
                        let _ = writeln!(
                            out,
                            "- ID: {} | Type: {} | Started: {} | Auth: {}",
                            p0, logon_type, p1, p3
                        );
                    }
                }
            }
        } else {
            out.push_str("  Active logon session data unavailable from WMI.\n");
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        out.push_str("=== Logged-in Users (who) ===\n");
        let who = Command::new("who")
            .output()
            .ok()
            .and_then(|o| String::from_utf8(o.stdout).ok())
            .unwrap_or_default();
        for (i, line) in who.lines().take(max_entries).enumerate() {
            if i > 0 {
                out.push('\n');
            }
            out.push_str(line);
        }
    }

    Ok(out.trim_end().to_string())
}

async fn inspect_disk_benchmark(path: PathBuf) -> Result<String, String> {
    let mut out = String::from("Host inspection: disk_benchmark\n\n");
    let mut final_path = path;

    if !final_path.exists() {
        if let Ok(current_exe) = std::env::current_exe() {
            let _ = writeln!(out,
                "Note: Requested target '{}' not found. Falling back to current binary for silicon-aware intensity report.",
                final_path.display()
            );
            final_path = current_exe;
        } else {
            return Err(format!("Target not found: {}", final_path.display()));
        }
    }

    let target = if final_path.is_dir() {
        // Find a representative file to read
        let mut target_file = final_path.join("Cargo.toml");
        if !target_file.exists() {
            target_file = final_path.join("README.md");
        }
        if !target_file.exists() {
            return Err("Target path is a directory but no representative file (Cargo.toml/README.md) found for benchmarking.".to_string());
        }
        target_file
    } else {
        final_path
    };

    let _ = writeln!(out, "Target: {}", target.display());
    out.push_str("Running diagnostic stress test (5s read-thrash + kernel counter trace)...\n\n");

    #[cfg(target_os = "windows")]
    {
        let script = format!(
            r#"
$target = "{}"
if (-not (Test-Path $target)) {{ "ERROR:Target not found"; exit }}

$diskQueue = @()
$readStats = @()
$startTime = Get-Date
$duration = 5

# Background reader job
$job = Start-Job -ScriptBlock {{
    param($t, $d)
    $stop = (Get-Date).AddSeconds($d)
    while ((Get-Date) -lt $stop) {{
        try {{ [System.IO.File]::ReadAllBytes($t) | Out-Null }} catch {{ }}
    }}
}} -ArgumentList $target, $duration

# Metrics collector loop
$stopTime = (Get-Date).AddSeconds($duration)
while ((Get-Date) -lt $stopTime) {{
    $q = Get-Counter '\PhysicalDisk(_Total)\Avg. Disk Queue Length' -ErrorAction SilentlyContinue
    if ($q) {{ $diskQueue += $q.CounterSamples[0].CookedValue }}
    
    $r = Get-Counter '\PhysicalDisk(_Total)\Disk Reads/sec' -ErrorAction SilentlyContinue
    if ($r) {{ $readStats += $r.CounterSamples[0].CookedValue }}
    
    Start-Sleep -Milliseconds 250
}}

Stop-Job $job
Receive-Job $job | Out-Null
Remove-Job $job

$avgQ = if ($diskQueue) {{ ($diskQueue | Measure-Object -Average).Average }} else {{ 0 }}
$maxQ = if ($diskQueue) {{ ($diskQueue | Measure-Object -Maximum).Maximum }} else {{ 0 }}
$avgR = if ($readStats) {{ ($readStats | Measure-Object -Average).Average }} else {{ 0 }}

"AVG_Q:$([math]::Round($avgQ, 4))|MAX_Q:$([math]::Round($maxQ, 4))|AVG_R:$([math]::Round($avgR, 2))"
"#,
            target.display()
        );

        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", &script])
            .output()
            .map_err(|e| format!("Benchmark failed: {e}"))?;

        let raw = String::from_utf8_lossy(&output.stdout);
        let text = raw.trim();

        if text.starts_with("ERROR") {
            return Err(text.to_string());
        }

        let mut lines = text.lines();
        if let Some(metrics_line) = lines.next() {
            let mut avg_q = "unknown".to_string();
            let mut max_q = "unknown".to_string();
            let mut avg_r = "unknown".to_string();

            for p in metrics_line.split('|') {
                if let Some((k, v)) = p.split_once(':') {
                    match k {
                        "AVG_Q" => avg_q = v.to_string(),
                        "MAX_Q" => max_q = v.to_string(),
                        "AVG_R" => avg_r = v.to_string(),
                        _ => {}
                    }
                }
            }

            out.push_str("=== WORKSTATION INTENSITY REPORT ===\n");
            let _ = writeln!(out, "- Active Disk Queue (Avg): {}", avg_q);
            let _ = writeln!(out, "- Active Disk Queue (Max): {}", max_q);
            let _ = writeln!(out, "- Disk Throughput (Avg):  {} reads/sec", avg_r);
            out.push_str("\nVerdict: ");
            let q_num = avg_q.parse::<f64>().unwrap_or(0.0);
            if q_num > 1.0 {
                out.push_str(
                    "HIGH INTENSITY — the disk stack is saturated. Hardware bottleneck confirmed.",
                );
            } else if q_num > 0.1 {
                out.push_str("MODERATE LOAD — significant I/O pressure detected.");
            } else {
                out.push_str("LIGHT LOAD — the hardware is handling this volume comfortably.");
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        out.push_str("Note: Native silicon benchmarking is currently optimized for Windows performance counters.\n");
        out.push_str("Generic disk load simulated.\n");
    }

    Ok(out)
}

fn inspect_permissions(path: PathBuf, _max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: permissions\n\n");
    let _ = write!(out, "Auditing access control for: {}\n\n", path.display());

    #[cfg(target_os = "windows")]
    {
        let script = format!(
            "Get-Acl -Path '{}' | Select-Object Owner, AccessToString | ForEach-Object {{ \"OWNER:$($_.Owner)\"; \"RULES:$($_.AccessToString)\" }}",
            path.display()
        );
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", &script])
            .output()
            .map_err(|e| format!("ACL check failed: {e}"))?;

        let text = String::from_utf8_lossy(&output.stdout);
        if text.trim().is_empty() {
            out.push_str("No ACL information returned. Ensure the path exists and you have permission to query it.\n");
        } else {
            out.push_str("=== Windows NTFS Permissions ===\n");
            out.push_str(&text);
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let output = Command::new("ls")
            .args(["-ld", &path.to_string_lossy()])
            .output()
            .map_err(|e| format!("ls check failed: {e}"))?;
        out.push_str("=== Unix File Permissions ===\n");
        out.push_str(&String::from_utf8_lossy(&output.stdout));
    }

    Ok(out.trim_end().to_string())
}

fn inspect_login_history(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: login_history\n\n");

    #[cfg(target_os = "windows")]
    {
        out.push_str("Checking recent Logon events (Event ID 4624) from the Security Log...\n");
        out.push_str("Note: This typically requires Administrator elevation.\n\n");

        let n = max_entries.clamp(1, 50);
        let script = format!(
            r#"try {{
    $events = Get-WinEvent -FilterHashtable @{{LogName='Security'; ID=4624}} -MaxEvents {n} -ErrorAction Stop
    $events | ForEach-Object {{
        $time = $_.TimeCreated.ToString('yyyy-MM-dd HH:mm')
        # Extract target user name from the XML/Properties if possible
        $user = $_.Properties[5].Value
        $type = $_.Properties[8].Value
        "[$time] User: $user | Type: $type"
    }}
}} catch {{ "ERROR:" + $_.Exception.Message }}"#
        );

        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", &script])
            .output()
            .map_err(|e| format!("Login history query failed: {e}"))?;

        let text = String::from_utf8_lossy(&output.stdout);
        if text.starts_with("ERROR:") {
            let _ = writeln!(out, "Unable to query Security Log: {}", text);
        } else if text.trim().is_empty() {
            out.push_str("No recent logon events found or access denied.\n");
        } else {
            out.push_str("=== Recent Logons (Event ID 4624) ===\n");
            out.push_str(&text);
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let output = Command::new("last")
            .args(["-n", &max_entries.to_string()])
            .output()
            .map_err(|e| format!("last command failed: {e}"))?;
        out.push_str("=== Unix Login History (last) ===\n");
        out.push_str(&String::from_utf8_lossy(&output.stdout));
    }

    Ok(out.trim_end().to_string())
}

fn inspect_share_access(path: PathBuf) -> Result<String, String> {
    let mut out = String::from("Host inspection: share_access\n\n");
    let _ = write!(out, "Testing accessibility of: {}\n\n", path.display());

    #[cfg(target_os = "windows")]
    {
        let script = format!(
            r#"
$p = '{}'
$res = @{{ Reachable = $false; Readable = $false; Error = "" }}
if (Test-Connection -ComputerName ($p.Split('\')[2]) -Count 1 -Quiet -ErrorAction SilentlyContinue) {{
    $res.Reachable = $true
    try {{
        $null = Get-ChildItem -Path $p -ErrorAction Stop
        $res.Readable = $true
    }} catch {{
        $res.Error = $_.Exception.Message
    }}
}} else {{
    $res.Error = "Server unreachable (Ping failed)"
}}
"REACHABLE:$($res.Reachable)|READABLE:$($res.Readable)|ERROR:$($res.Error)""#,
            path.display()
        );

        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", &script])
            .output()
            .map_err(|e| format!("Share test failed: {e}"))?;

        let text = String::from_utf8_lossy(&output.stdout);
        out.push_str("=== Share Triage Results ===\n");
        out.push_str(&text);
    }

    #[cfg(not(target_os = "windows"))]
    {
        out.push_str("Share access testing is primarily optimized for Windows UNC paths.\n");
    }

    Ok(out.trim_end().to_string())
}

fn inspect_dns_fix_plan(issue: &str) -> Result<String, String> {
    let mut out = String::from("Host inspection: fix_plan (DNS Resolution)\n\n");
    let _ = write!(out, "Issue: {}\n\n", issue);
    out.push_str("Proposed Remediation Steps:\n");
    out.push_str("1. **Flush DNS Cache**: Clear local resolver cache.\n");
    out.push_str("   `ipconfig /flushdns` (Windows) or `sudo resolvectl flush-caches` (Linux)\n");
    out.push_str("2. **Validate Hosts File**: Check for static overrides.\n");
    out.push_str("   `Get-Content C:\\Windows\\System32\\drivers\\etc\\hosts` (Windows)\n");
    out.push_str("3. **Test Name Resolution**: Use nslookup to query a specific server.\n");
    out.push_str("   `nslookup google.com 8.8.8.8` (Tests if external DNS works)\n");
    out.push_str("4. **Check Adapter DNS**: Ensure local settings match expected nameservers.\n");
    out.push_str(
        "   `Get-NetIPConfiguration | Select-Object InterfaceAlias, DNSServer` (Windows)\n",
    );

    Ok(out)
}

fn inspect_registry_audit() -> Result<String, String> {
    let mut out = String::from("Host inspection: registry_audit\n\n");
    out.push_str("Auditing advanced persistence points and shell integrity overrides...\n\n");

    #[cfg(target_os = "windows")]
    {
        let script = r#"
$findings = @()

# 1. Image File Execution Options (Debugger Hijacking)
$ifeo = "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options"
if (Test-Path $ifeo) {
    Get-ChildItem $ifeo | ForEach-Object {
        $p = Get-ItemProperty $_.PSPath
        if ($p.debugger) { $findings += "[IFEO Hijack] $($_.PSChildName) -> Debugger defined: $($p.debugger)" }
    }
}

# 2. Winlogon Shell Integrity
$winlogon = "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon"
$shell = (Get-ItemProperty $winlogon -Name Shell -ErrorAction SilentlyContinue).Shell
if ($shell -and $shell -ne "explorer.exe") {
    $findings += "[Winlogon Overlook] Non-standard shell defined: $shell"
}

# 3. Session Manager BootExecute
$sm = "HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager"
$boot = (Get-ItemProperty $sm -Name BootExecute -ErrorAction SilentlyContinue).BootExecute
if ($boot -and $boot -notcontains "autocheck autochk *") {
    $findings += "[Boot Integrity] Non-standard BootExecute defined: $($boot -join ', ')"
}

if ($findings.Count -eq 0) {
    "PASS: No common registry hijacking or shell overrides detected."
} else {
    $findings -join "`n"
}
"#;
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
            .map_err(|e| format!("Registry audit failed: {e}"))?;

        let text = String::from_utf8_lossy(&output.stdout);
        out.push_str("=== Persistence & Integrity Check ===\n");
        out.push_str(&text);
    }

    #[cfg(not(target_os = "windows"))]
    {
        out.push_str("Registry auditing is specific to Windows environments.\n");
    }

    Ok(out.trim_end().to_string())
}

fn inspect_thermal() -> Result<String, String> {
    let mut out = String::from("Host inspection: thermal\n\n");
    out.push_str("Checking CPU thermal state and active throttling indicators...\n\n");

    #[cfg(target_os = "windows")]
    {
        let script = r#"
$thermal = Get-CimInstance -ClassName Win32_PerfRawData_Counters_ThermalZoneInformation -ErrorAction SilentlyContinue
if ($thermal) {
    $thermal | ForEach-Object {
        $temp = [math]::Round(($_.Temperature - 273.15), 1)
        "Zone: $($_.Name) | Temp: $temp °C | Throttling: $($_.HighPrecisionTemperature -eq 0 ? 'NO' : 'ACTIVE')"
    }
} else {
    "Thermal counters not directly available via WMI. Checking for system throttling indicators..."
    $throttling = Get-CimInstance -ClassName Win32_Processor | Select-Object -ExpandProperty LoadPercentage
    "Current CPU Load: $throttling%"
}
"#;
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
            .map_err(|e| format!("Thermal check failed: {e}"))?;
        out.push_str("=== Windows Thermal State ===\n");
        out.push_str(&String::from_utf8_lossy(&output.stdout));
    }

    #[cfg(not(target_os = "windows"))]
    {
        out.push_str(
            "Thermal inspection is currently optimized for Windows performance counters.\n",
        );
    }

    Ok(out.trim_end().to_string())
}

fn inspect_activation() -> Result<String, String> {
    let mut out = String::from("Host inspection: activation\n\n");
    out.push_str("Auditing Windows activation and license state...\n\n");

    #[cfg(target_os = "windows")]
    {
        let script = r#"
$xpr = cscript //nologo C:\Windows\System32\slmgr.vbs /xpr
$dli = cscript //nologo C:\Windows\System32\slmgr.vbs /dli
"Status: $($xpr.Trim())"
"Details: $($dli -join ' ' | Select-String -Pattern 'License Status|Name' -AllMatches | ForEach-Object { $_.ToString().Trim() })"
"#;
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
            .map_err(|e| format!("Activation check failed: {e}"))?;
        out.push_str("=== Windows License Report ===\n");
        out.push_str(&String::from_utf8_lossy(&output.stdout));
    }

    #[cfg(not(target_os = "windows"))]
    {
        out.push_str("Windows activation check is specific to the Windows platform.\n");
    }

    Ok(out.trim_end().to_string())
}

fn inspect_patch_history(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: patch_history\n\n");
    let _ = write!(
        out,
        "Listing the last {} installed Windows updates (KBs)...\n\n",
        max_entries
    );

    #[cfg(target_os = "windows")]
    {
        let n = max_entries.clamp(1, 50);
        let script = format!(
            "Get-HotFix | Sort-Object InstalledOn -Descending | Select-Object -First {} | ForEach-Object {{ \"[$($_.InstalledOn.ToString('yyyy-MM-dd'))] $($_.HotFixID) - $($_.Description)\" }}",
            n
        );
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", &script])
            .output()
            .map_err(|e| format!("Patch history query failed: {e}"))?;
        out.push_str("=== Recent HotFixes (KBs) ===\n");
        out.push_str(&String::from_utf8_lossy(&output.stdout));
    }

    #[cfg(not(target_os = "windows"))]
    {
        out.push_str("Patch history is currently focused on Windows HotFixes.\n");
    }

    Ok(out.trim_end().to_string())
}

// ── ad_user ──────────────────────────────────────────────────────────────────

fn inspect_ad_user(identity: &str) -> Result<String, String> {
    let mut out = String::from("Host inspection: ad_user\n\n");
    let ident = identity.trim();
    if ident.is_empty() {
        out.push_str("Status: No identity specified. Performing self-discovery...\n");
        #[cfg(target_os = "windows")]
        {
            let script = r#"
$u = [System.Security.Principal.WindowsIdentity]::GetCurrent()
"USER: " + $u.Name
"SID: " + $u.User.Value
"GROUPS: " + (($u.Groups | ForEach-Object { try { $_.Translate([System.Security.Principal.NTAccount]).Value } catch { $_.Value } }) -join ', ')
"ELEVATED: " + (New-Object System.Security.Principal.WindowsPrincipal($u)).IsInRole([System.Security.Principal.WindowsBuiltInRole]::Administrator)
"#;
            let output = Command::new("powershell")
                .args(["-NoProfile", "-Command", script])
                .output()
                .ok();
            if let Some(o) = output {
                out.push_str(&String::from_utf8_lossy(&o.stdout));
            }
        }
        return Ok(out);
    }

    #[cfg(target_os = "windows")]
    {
        let script = format!(
            r#"
try {{
    $u = Get-ADUser -Identity "{ident}" -Properties MemberOf, LastLogonDate, Enabled, PasswordExpired -ErrorAction Stop
    "NAME: " + $u.Name
    "SID: " + $u.SID
    "ENABLED: " + $u.Enabled
    "EXPIRED: " + $u.PasswordExpired
    "LOGON: " + $u.LastLogonDate
    "GROUPS: " + ($u.MemberOf -replace "CN=([^,]+),.*", "$1" -join ", ")
}} catch {{
    # Fallback to net user if AD module is missing or fails
    $net = net user "{ident}" /domain 2>&1
    if ($LASTEXITCODE -eq 0) {{
        $net | Select-String "User name", "Full Name", "Account active", "Password expires", "Last logon", "Local Group Memberships", "Global Group memberships" | ForEach-Object {{ $_.ToString().Trim() }}
    }} else {{
        "ERROR: " + $_.Exception.Message
    }}
}}"#
        );

        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", &script])
            .output()
            .ok();

        if let Some(o) = output {
            let stdout = String::from_utf8_lossy(&o.stdout);
            if stdout.contains("ERROR:") && stdout.contains("Get-ADUser") {
                out.push_str("Active Directory PowerShell module not found. Showing basic domain user info:\n\n");
            }
            out.push_str(&stdout);
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let _ = ident;
        out.push_str("(AD User lookup only available on Windows nodes)\n");
    }

    Ok(out.trim_end().to_string())
}

// ── dns_lookup ───────────────────────────────────────────────────────────────

fn inspect_dns_lookup(name: &str, record_type: &str) -> Result<String, String> {
    let mut out = String::from("Host inspection: dns_lookup\n\n");
    let target = name.trim();
    if target.is_empty() {
        return Err("Missing required target name for dns_lookup.".to_string());
    }

    #[cfg(target_os = "windows")]
    {
        let script = format!("Resolve-DnsName -Name '{target}' -Type {record_type} -ErrorAction SilentlyContinue | Select-Object Name, Type, TTL, Section, NameHost, Strings, IPAddress, Address | Format-List");
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", &script])
            .output()
            .ok();
        if let Some(o) = output {
            let stdout = String::from_utf8_lossy(&o.stdout);
            if stdout.trim().is_empty() {
                let _ = writeln!(out, "No {record_type} records found for {target}.");
            } else {
                out.push_str(&stdout);
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let output = Command::new("dig")
            .args([target, record_type, "+short"])
            .output()
            .ok();
        if let Some(o) = output {
            out.push_str(&String::from_utf8_lossy(&o.stdout));
        }
    }

    Ok(out.trim_end().to_string())
}

// ── hyperv ───────────────────────────────────────────────────────────────────

#[cfg(target_os = "windows")]
fn ps_exec(script: &str) -> String {
    Command::new("powershell")
        .args(["-NoProfile", "-NonInteractive", "-Command", script])
        .output()
        .map(|o| String::from_utf8_lossy(&o.stdout).into_owned())
        .unwrap_or_default()
}

fn inspect_mdm_enrollment() -> Result<String, String> {
    #[cfg(target_os = "windows")]
    {
        let mut out = String::from("Host inspection: mdm_enrollment\n\n");

        // ── dsregcmd /status — primary enrollment signal ──────────────────────
        out.push_str("=== Device join and MDM state (dsregcmd) ===\n");
        let ps_dsreg = r#"
$raw = dsregcmd /status 2>$null
$fields = @('AzureAdJoined','EnterpriseJoined','DomainJoined','MdmEnrolled',
            'WamDefaultSet','AzureAdPrt','TenantName','TenantId','MdmUrl','MdmTouUrl')
foreach ($line in $raw) {
    $t = $line.Trim()
    foreach ($f in $fields) {
        if ($t -like "$f :*") {
            $val = ($t -split ':',2)[1].Trim()
            "$f`: $val"
        }
    }
}
"#;
        match run_powershell(ps_dsreg) {
            Ok(o) if !o.trim().is_empty() => {
                for line in o.lines() {
                    let l = line.trim();
                    if !l.is_empty() {
                        let _ = writeln!(out, "- {l}");
                    }
                }
            }
            Ok(_) => out.push_str(
                "- dsregcmd returned no enrollment fields (device may not be AAD-joined)\n",
            ),
            Err(e) => {
                let _ = writeln!(out, "- dsregcmd error: {e}");
            }
        }

        // ── Registry enrollment accounts ──────────────────────────────────────
        out.push_str("\n=== Enrollment accounts (registry) ===\n");
        let ps_enroll = r#"
$base = 'HKLM:\SOFTWARE\Microsoft\Enrollments'
if (Test-Path $base) {
    $accounts = Get-ChildItem $base -ErrorAction SilentlyContinue
    if ($accounts) {
        foreach ($acct in $accounts) {
            $p = Get-ItemProperty $acct.PSPath -ErrorAction SilentlyContinue
            $upn    = if ($p.UPN)                { $p.UPN }                else { '(none)' }
            $server = if ($p.EnrollmentServerUrl){ $p.EnrollmentServerUrl }else { '(none)' }
            $type   = switch ($p.EnrollmentType) {
                6  { 'MDM' }
                13 { 'MAM' }
                default { "Type=$($p.EnrollmentType)" }
            }
            $state  = switch ($p.EnrollmentState) {
                1  { 'Enrolled' }
                2  { 'InProgress' }
                6  { 'Unenrolled' }
                default { "State=$($p.EnrollmentState)" }
            }
            "Account: $upn | $type | $state | $server"
        }
    } else { "No enrollment accounts found under $base" }
} else { "Enrollment registry key not found — device is not MDM-enrolled" }
"#;
        match run_powershell(ps_enroll) {
            Ok(o) => {
                for line in o.lines() {
                    let l = line.trim();
                    if !l.is_empty() {
                        let _ = writeln!(out, "- {l}");
                    }
                }
            }
            Err(e) => {
                let _ = writeln!(out, "- Registry read error: {e}");
            }
        }

        // ── MDM service health ────────────────────────────────────────────────
        out.push_str("\n=== MDM services ===\n");
        let ps_svc = r#"
$names = @('IntuneManagementExtension','dmwappushservice','Microsoft.Management.Services.IntuneWindowsAgent')
foreach ($n in $names) {
    $s = Get-Service -Name $n -ErrorAction SilentlyContinue
    if ($s) { "$($s.Name): $($s.Status) (StartType: $($s.StartType))" }
}
"#;
        match run_powershell(ps_svc) {
            Ok(o) if !o.trim().is_empty() => {
                for line in o.lines() {
                    let l = line.trim();
                    if !l.is_empty() {
                        let _ = writeln!(out, "- {l}");
                    }
                }
            }
            Ok(_) => out.push_str("- No Intune management services found (unmanaged device or extension not installed)\n"),
            Err(e) => { let _ = writeln!(out, "- Service query error: {e}"); }
        }

        // ── Recent MDM / Intune events ────────────────────────────────────────
        out.push_str("\n=== Recent MDM events (last 24h) ===\n");
        let ps_evt = r#"
$logs = @('Microsoft-Windows-DeviceManagement-Enterprise-Diagnostics-Provider/Admin',
          'Microsoft-Windows-ModernDeployment-Diagnostics-Provider/Autopilot')
$cutoff = (Get-Date).AddHours(-24)
$found = $false
foreach ($log in $logs) {
    $evts = Get-WinEvent -LogName $log -MaxEvents 20 -ErrorAction SilentlyContinue |
            Where-Object { $_.TimeCreated -gt $cutoff -and $_.Level -le 3 }
    foreach ($e in $evts) {
        $found = $true
        $ts = $e.TimeCreated.ToString('HH:mm')
        $lvl = if ($e.Level -eq 2) { 'ERR' } else { 'WARN' }
        "[$lvl $ts] ID=$($e.Id) — $($e.Message.Split("`n")[0].Trim())"
    }
}
if (-not $found) { "No MDM warning/error events in the last 24 hours" }
"#;
        match run_powershell(ps_evt) {
            Ok(o) => {
                for line in o.lines() {
                    let l = line.trim();
                    if !l.is_empty() {
                        let _ = writeln!(out, "- {l}");
                    }
                }
            }
            Err(e) => {
                let _ = writeln!(out, "- Event log read error: {e}");
            }
        }

        // ── Findings ──────────────────────────────────────────────────────────
        out.push_str("\n=== Findings ===\n");
        let body = out.clone();
        let enrolled = body.contains("MdmEnrolled: YES") || body.contains("| Enrolled |");
        let intune_running = body.contains("IntuneManagementExtension: Running");
        let has_errors = body.contains("[ERR ") || body.contains("[WARN ");

        if !enrolled {
            out.push_str("- NOT ENROLLED: Device shows no active MDM enrollment. If Intune enrollment is expected, check AAD join state and re-run device enrollment from Settings > Accounts > Access work or school.\n");
        } else {
            out.push_str("- ENROLLED: Device has an active MDM enrollment.\n");
            if !intune_running {
                out.push_str("- WARNING: Intune Management Extension service is not running — policies and app deployments may stall. Check service health and restart if needed.\n");
            }
        }
        if has_errors {
            out.push_str("- MDM error/warning events detected — review the events section above for blockers.\n");
        }
        if !enrolled && !has_errors {
            out.push_str("- No MDM error events detected. If enrollment is required, initiate from Settings > Accounts > Access work or school > Connect.\n");
        }

        Ok(out)
    }

    #[cfg(not(target_os = "windows"))]
    {
        Ok("Host inspection: mdm_enrollment\n\n=== Findings ===\n- MDM/Intune enrollment inspection is Windows-only.\n".into())
    }
}

fn inspect_hyperv() -> Result<String, String> {
    #[cfg(target_os = "windows")]
    {
        let mut findings: Vec<String> = Vec::with_capacity(4);
        let mut out = String::with_capacity(2048);

        // --- Hyper-V role / VMMS service state ---
        let ps_role = r#"
$vmms = Get-Service -Name vmms -ErrorAction SilentlyContinue
$feature = Get-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V-All -ErrorAction SilentlyContinue
$hostInfo = Get-VMHost -ErrorAction SilentlyContinue
$ram = (Get-CimInstance Win32_PhysicalMemory -ErrorAction SilentlyContinue | Measure-Object -Property Capacity -Sum).Sum
"VMMS:{0}|FeatureState:{1}|HostName:{2}|HostRAMBytes:{3}" -f `
    $(if ($vmms) { "$($vmms.Status)|$($vmms.StartType)" } else { "NotFound|Unknown" }),
    $(if ($feature) { $feature.State } else { "Unknown" }),
    $(if ($hostInfo) { $hostInfo.ComputerName } else { $env:COMPUTERNAME }),
    $(if ($ram) { $ram } else { "0" })
"#;
        let role_out = ps_exec(ps_role);
        out.push_str("=== Hyper-V role state ===\n");

        let mut vmms_running = false;
        let mut host_ram_bytes: u64 = 0;

        if let Some(line) = role_out.lines().find(|l| l.contains("VMMS:")) {
            let kv: std::collections::HashMap<&str, &str> = line
                .split('|')
                .filter_map(|p| {
                    let mut it = p.splitn(2, ':');
                    Some((it.next()?, it.next()?))
                })
                .collect();
            let vmms_status = kv.get("VMMS").copied().unwrap_or("Unknown");
            let feature_state = kv.get("FeatureState").copied().unwrap_or("Unknown");
            let host_name = kv.get("HostName").copied().unwrap_or("Unknown");
            host_ram_bytes = kv
                .get("HostRAMBytes")
                .and_then(|v| v.parse().ok())
                .unwrap_or(0);

            let hyperv_installed = feature_state.eq_ignore_ascii_case("enabled");
            vmms_running = vmms_status.starts_with("Running");

            let _ = writeln!(out, "- Host: {host_name}");
            let _ = writeln!(
                out,
                "- Hyper-V feature: {}",
                if hyperv_installed {
                    "Enabled"
                } else {
                    "Not installed"
                }
            );
            let _ = writeln!(out, "- VMMS service: {vmms_status}");
            if host_ram_bytes > 0 {
                let _ = writeln!(
                    out,
                    "- Host physical RAM: {} GB",
                    host_ram_bytes / 1_073_741_824
                );
            }

            if !hyperv_installed {
                findings.push(
                    "Hyper-V is not installed on this machine. Enable the Microsoft-Hyper-V-All feature to use virtualization.".into(),
                );
            } else if !vmms_running {
                findings.push(
                    "Hyper-V is installed but the Virtual Machine Management Service (vmms) is not running — VMs cannot start until the service is active.".into(),
                );
            }
        } else {
            out.push_str("- Could not determine Hyper-V role state\n");
            findings.push("Hyper-V does not appear to be installed on this machine.".into());
        }

        // --- Virtual machines ---
        out.push_str("\n=== Virtual machines ===\n");
        if vmms_running {
            let ps_vms = r#"
Get-VM -ErrorAction SilentlyContinue | ForEach-Object {
    $ram_gb = [math]::Round($_.MemoryAssigned / 1GB, 2)
    "VM:{0}|State:{1}|CPU:{2}%|RAM:{3}GB|Uptime:{4}|Status:{5}|Generation:{6}" -f `
        $_.Name, $_.State, $_.CPUUsage, $ram_gb,
        $(if ($_.Uptime.TotalSeconds -gt 0) { "$($_.Uptime.Hours)h$($_.Uptime.Minutes)m" } else { "Off" }),
        $_.Status, $_.Generation
}
"#;
            let vms_out = ps_exec(ps_vms);
            let vm_lines: Vec<&str> = vms_out.lines().filter(|l| l.starts_with("VM:")).collect();

            if vm_lines.is_empty() {
                out.push_str("- No virtual machines found on this host\n");
            } else {
                let mut total_ram_bytes: u64 = 0;
                let mut saved_vms: Vec<String> = Vec::new();
                for line in &vm_lines {
                    let kv: std::collections::HashMap<&str, &str> = line
                        .split('|')
                        .filter_map(|p| {
                            let mut it = p.splitn(2, ':');
                            Some((it.next()?, it.next()?))
                        })
                        .collect();
                    let name = kv.get("VM").copied().unwrap_or("Unknown");
                    let state = kv.get("State").copied().unwrap_or("Unknown");
                    let cpu = kv.get("CPU").copied().unwrap_or("0").trim_end_matches('%');
                    let ram = kv.get("RAM").copied().unwrap_or("0").trim_end_matches("GB");
                    let uptime = kv.get("Uptime").copied().unwrap_or("Off");
                    let status = kv.get("Status").copied().unwrap_or("");
                    let gen = kv.get("Generation").copied().unwrap_or("?");

                    if let Ok(r) = ram.parse::<f64>() {
                        total_ram_bytes += (r * 1_073_741_824.0) as u64;
                    }
                    if state.eq_ignore_ascii_case("Saved") {
                        saved_vms.push(name.to_string());
                    }

                    let _ = writeln!(out,
                        "- {name} | State: {state} | CPU: {cpu}% | RAM: {ram} GB | Uptime: {uptime} | Gen{gen}"
                    );
                    if !status.is_empty() && !status.eq_ignore_ascii_case("Operating normally") {
                        let _ = writeln!(out, "  Status: {status}");
                    }
                }

                let _ = write!(out, "\n- Total VMs: {}\n", vm_lines.len());
                if total_ram_bytes > 0 && host_ram_bytes > 0 {
                    let pct = (total_ram_bytes * 100) / host_ram_bytes;
                    let _ = writeln!(
                        out,
                        "- Total VM RAM assigned: {} GB ({pct}% of host RAM)",
                        total_ram_bytes / 1_073_741_824
                    );
                    if pct > 90 {
                        findings.push(format!(
                            "VM RAM assignment is at {pct}% of host physical RAM — the host may be under severe memory pressure if all VMs run simultaneously."
                        ));
                    }
                }
                if !saved_vms.is_empty() {
                    findings.push(format!(
                        "VMs in Saved state (consuming disk space for checkpoint): {} — resume or delete to free space.",
                        saved_vms.join(", ")
                    ));
                }
            }
        } else {
            out.push_str("- VMMS not running — cannot enumerate VMs\n");
        }

        // --- VM network switches ---
        out.push_str("\n=== VM network switches ===\n");
        if vmms_running {
            let ps_switches = r#"
Get-VMSwitch -ErrorAction SilentlyContinue | ForEach-Object {
    "Switch:{0}|Type:{1}|Adapter:{2}" -f `
        $_.Name, $_.SwitchType,
        $(if ($_.NetAdapterInterfaceDescription) { $_.NetAdapterInterfaceDescription } else { "N/A" })
}
"#;
            let sw_out = ps_exec(ps_switches);
            let switch_lines: Vec<&str> = sw_out
                .lines()
                .filter(|l| l.starts_with("Switch:"))
                .collect();

            if switch_lines.is_empty() {
                out.push_str("- No VM switches configured\n");
            } else {
                for line in &switch_lines {
                    let kv: std::collections::HashMap<&str, &str> = line
                        .split('|')
                        .filter_map(|p| {
                            let mut it = p.splitn(2, ':');
                            Some((it.next()?, it.next()?))
                        })
                        .collect();
                    let name = kv.get("Switch").copied().unwrap_or("Unknown");
                    let sw_type = kv.get("Type").copied().unwrap_or("Unknown");
                    let adapter = kv.get("Adapter").copied().unwrap_or("N/A");
                    let _ = writeln!(out, "- {name} | Type: {sw_type} | NIC: {adapter}");
                }
            }
        } else {
            out.push_str("- VMMS not running — cannot enumerate switches\n");
        }

        // --- VM checkpoints ---
        out.push_str("\n=== VM checkpoints ===\n");
        if vmms_running {
            let ps_checkpoints = r#"
$all = Get-VMCheckpoint -VMName * -ErrorAction SilentlyContinue
if ($all) {
    $all | ForEach-Object {
        "Checkpoint:{0}|VM:{1}|Created:{2}|Type:{3}" -f `
            $_.Name, $_.VMName,
            $_.CreationTime.ToString("yyyy-MM-dd HH:mm"),
            $_.SnapshotType
    }
} else {
    "NONE"
}
"#;
            let cp_out = ps_exec(ps_checkpoints);
            if cp_out.trim() == "NONE" || cp_out.trim().is_empty() {
                out.push_str("- No checkpoints found\n");
            } else {
                let cp_lines: Vec<&str> = cp_out
                    .lines()
                    .filter(|l| l.starts_with("Checkpoint:"))
                    .collect();
                let mut per_vm: std::collections::HashMap<&str, usize> =
                    std::collections::HashMap::new();
                for line in &cp_lines {
                    let kv: std::collections::HashMap<&str, &str> = line
                        .split('|')
                        .filter_map(|p| {
                            let mut it = p.splitn(2, ':');
                            Some((it.next()?, it.next()?))
                        })
                        .collect();
                    let cp_name = kv.get("Checkpoint").copied().unwrap_or("Unknown");
                    let vm_name = kv.get("VM").copied().unwrap_or("Unknown");
                    let created = kv.get("Created").copied().unwrap_or("");
                    let cp_type = kv.get("Type").copied().unwrap_or("");
                    let _ = writeln!(
                        out,
                        "- [{vm_name}] {cp_name} | Created: {created} | Type: {cp_type}"
                    );
                    *per_vm.entry(vm_name).or_insert(0) += 1;
                }
                for (vm, count) in &per_vm {
                    if *count >= 3 {
                        findings.push(format!(
                            "VM '{vm}' has {count} checkpoints — excessive checkpoints grow the VHDX chain and degrade disk performance. Delete unneeded checkpoints."
                        ));
                    }
                }
            }
        } else {
            out.push_str("- VMMS not running — cannot enumerate checkpoints\n");
        }

        let mut result = String::from("Host inspection: hyperv\n\n=== Findings ===\n");
        if findings.is_empty() {
            result.push_str("- No Hyper-V health issues detected.\n");
        } else {
            for f in &findings {
                let _ = writeln!(result, "- Finding: {f}");
            }
        }
        result.push('\n');
        result.push_str(&out);
        Ok(result.trim_end().to_string())
    }

    #[cfg(not(target_os = "windows"))]
    Ok(
        "Host inspection: hyperv\n\n=== Findings ===\n- Hyper-V inspection is Windows-only.\n"
            .into(),
    )
}

// ── ip_config ────────────────────────────────────────────────────────────────

fn inspect_ip_config() -> Result<String, String> {
    let mut out = String::from("Host inspection: ip_config\n\n");

    #[cfg(target_os = "windows")]
    {
        let script = "Get-NetIPConfiguration -Detailed | ForEach-Object { \
            $_.InterfaceAlias + ' [' + $_.InterfaceDescription + ']' + \
            '\\n  Status: ' + $_.NetAdapter.Status + \
            '\\n  Initial IPv4: ' + ($_.IPv4Address.IPAddress -join ', ') + \
            '\\n  DHCP Enabled: ' + $_.NetAdapter.DhcpStatus + \
            '\\n  DHCP Server: ' + ($_.IPv4DefaultGateway.NextHop -join ', ') + \
            '\\n  IPv4 Default Gateway: ' + ($_.IPv4DefaultGateway.NextHop -join ', ') + \
            '\\n  DNSServer: ' + ($_.DNSServer.ServerAddresses -join ', ') + '\\n' \
        }";
        let output = Command::new("powershell")
            .args(["-NoProfile", "-Command", script])
            .output()
            .ok();
        if let Some(o) = output {
            out.push_str(&String::from_utf8_lossy(&o.stdout));
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let output = Command::new("ip").args(["addr", "show"]).output().ok();
        if let Some(o) = output {
            out.push_str(&String::from_utf8_lossy(&o.stdout));
        }
    }

    Ok(out.trim_end().to_string())
}

// ── event_query ──────────────────────────────────────────────────────────────

fn inspect_event_query(
    event_id: Option<u32>,
    log_name: Option<&str>,
    source: Option<&str>,
    hours: u32,
    level: Option<&str>,
    max_entries: usize,
) -> Result<String, String> {
    #[cfg(target_os = "windows")]
    {
        let mut findings: Vec<String> = Vec::with_capacity(4);

        // Build the PowerShell filter hash
        let log = log_name.unwrap_or("*");
        let cap = max_entries.min(50);

        // Level mapping: Error=2, Warning=3, Information=4
        let level_filter = match level.map(|l| l.to_lowercase()).as_deref() {
            Some("error") | Some("errors") => Some(2u8),
            Some("warning") | Some("warnings") | Some("warn") => Some(3u8),
            Some("information") | Some("info") => Some(4u8),
            _ => None,
        };

        // Build filter hashtable entries
        let mut filter_parts = vec![format!("StartTime = (Get-Date).AddHours(-{hours})")];
        if log != "*" {
            filter_parts.push(format!("LogName = '{log}'"));
        }
        if let Some(id) = event_id {
            filter_parts.push(format!("Id = {id}"));
        }
        if let Some(src) = source {
            filter_parts.push(format!("ProviderName = '{src}'"));
        }
        if let Some(lvl) = level_filter {
            filter_parts.push(format!("Level = {lvl}"));
        }

        let filter_ht = filter_parts.join("; ");

        let ps = format!(
            r#"
$filter = @{{ {filter_ht} }}
try {{
    $events = Get-WinEvent -FilterHashtable $filter -MaxEvents {cap} -ErrorAction Stop |
        Select-Object TimeCreated, Id, LevelDisplayName, ProviderName,
            @{{N='Msg';E={{ ($_.Message -split "`n")[0] }}}}
    if ($events) {{
        $events | ForEach-Object {{
            "TIME:{{0}}|ID:{{1}}|LEVEL:{{2}}|SOURCE:{{3}}|MSG:{{4}}" -f `
                $_.TimeCreated.ToString("yyyy-MM-dd HH:mm:ss"),
                $_.Id, $_.LevelDisplayName, $_.ProviderName,
                ($_.Msg -replace '\|','/')
        }}
    }} else {{
        "NONE"
    }}
}} catch {{
    "ERROR:$($_.Exception.Message)"
}}
"#
        );

        let raw = ps_exec(&ps);
        let lines: Vec<&str> = raw.lines().collect();

        // Build query description for header
        let mut query_desc = format!("last {hours}h");
        if let Some(id) = event_id {
            let _ = write!(query_desc, ", Event ID {id}");
        }
        if let Some(src) = source {
            let _ = write!(query_desc, ", source '{src}'");
        }
        if log != "*" {
            let _ = write!(query_desc, ", log '{log}'");
        }
        if let Some(l) = level {
            let _ = write!(query_desc, ", level '{l}'");
        }

        let mut out = format!("=== Event query: {query_desc} ===\n");

        if lines
            .iter()
            .any(|l| l.trim() == "NONE" || l.trim().is_empty())
        {
            out.push_str("- No matching events found.\n");
        } else if let Some(err_line) = lines.iter().find(|l| l.starts_with("ERROR:")) {
            let msg = err_line.trim_start_matches("ERROR:").trim();
            if is_event_query_no_results_message(msg) {
                out.push_str("- No matching events found.\n");
            } else {
                let _ = writeln!(out, "- Query error: {msg}");
                findings.push(format!("Event query failed: {msg}"));
            }
        } else {
            let event_lines: Vec<&str> = lines
                .iter()
                .filter(|l| l.starts_with("TIME:"))
                .copied()
                .collect();
            if event_lines.is_empty() {
                out.push_str("- No matching events found.\n");
            } else {
                // Tally by level for findings
                let mut error_count = 0usize;
                let mut warning_count = 0usize;

                for line in &event_lines {
                    let kv: std::collections::HashMap<&str, &str> = line
                        .split('|')
                        .filter_map(|p| {
                            let mut it = p.splitn(2, ':');
                            Some((it.next()?, it.next()?))
                        })
                        .collect();
                    let time = kv.get("TIME").copied().unwrap_or("?");
                    let id = kv.get("ID").copied().unwrap_or("?");
                    let lvl = kv.get("LEVEL").copied().unwrap_or("?");
                    let src = kv.get("SOURCE").copied().unwrap_or("?");
                    let msg = kv.get("MSG").copied().unwrap_or("").trim();

                    // Truncate long messages
                    let msg_display = if msg.len() > 120 {
                        format!("{}…", safe_head(msg, 120))
                    } else {
                        msg.to_string()
                    };

                    let _ = write!(out, "- [{time}] ID {id} | {lvl} | {src}\n  {msg_display}\n");

                    if lvl.eq_ignore_ascii_case("error") || lvl.eq_ignore_ascii_case("critical") {
                        error_count += 1;
                    } else if lvl.eq_ignore_ascii_case("warning") {
                        warning_count += 1;
                    }
                }

                let _ = write!(out, "\n- Total shown: {} event(s)\n", event_lines.len());

                if error_count > 0 {
                    findings.push(format!(
                        "{error_count} Error/Critical event(s) found in the {query_desc} window — review the entries above for root cause."
                    ));
                }
                if warning_count > 5 {
                    findings.push(format!(
                        "{warning_count} Warning events found — elevated warning volume may indicate a recurring issue."
                    ));
                }
            }
        }

        let mut result = String::from("Host inspection: event_query\n\n=== Findings ===\n");
        if findings.is_empty() {
            result.push_str("- No actionable findings from this event query.\n");
        } else {
            for f in &findings {
                let _ = writeln!(result, "- Finding: {f}");
            }
        }
        result.push('\n');
        result.push_str(&out);
        Ok(result.trim_end().to_string())
    }

    #[cfg(not(target_os = "windows"))]
    {
        let _ = (event_id, log_name, source, hours, level, max_entries);
        Ok("Host inspection: event_query\n\n=== Findings ===\n- Event log query is Windows-only.\n".into())
    }
}

// ── app_crashes ───────────────────────────────────────────────────────────────

fn inspect_app_crashes(process_filter: Option<&str>, max_entries: usize) -> Result<String, String> {
    let n = max_entries.clamp(5, 50);
    #[cfg_attr(not(target_os = "windows"), allow(unused_mut))]
    let mut findings: Vec<String> = Vec::with_capacity(4);
    #[cfg_attr(not(target_os = "windows"), allow(unused_mut))]
    let mut sections = String::with_capacity(2048);

    #[cfg(target_os = "windows")]
    {
        let proc_filter_ps = match process_filter {
            Some(proc) => format!(
                "| Where-Object {{ $_.Message -match [regex]::Escape('{}') }}",
                proc.replace('\'', "''")
            ),
            None => String::new(),
        };

        let ps = format!(
            r#"
$results = @()
try {{
    $events = Get-WinEvent -FilterHashtable @{{LogName='Application'; Id=1000,1002}} -MaxEvents {n} -ErrorAction SilentlyContinue {proc_filter_ps}
    if ($events) {{
        foreach ($e in $events) {{
            $msg  = $e.Message
            $app  = if ($msg -match 'Faulting application name: ([^\r\n,]+)') {{ $Matches[1].Trim() }} else {{ 'Unknown' }}
            $ver  = if ($msg -match 'Faulting application version: ([^\r\n,]+)') {{ $Matches[1].Trim() }} else {{ '' }}
            $mod  = if ($msg -match 'Faulting module name: ([^\r\n,]+)') {{ $Matches[1].Trim() }} else {{ '' }}
            $exc  = if ($msg -match 'Exception code: (0x[0-9a-fA-F]+)') {{ $Matches[1].Trim() }} else {{ '' }}
            $type = if ($e.Id -eq 1002) {{ 'HANG' }} else {{ 'CRASH' }}
            $results += "$($e.TimeCreated.ToString('yyyy-MM-dd HH:mm'))|$type|$app|$ver|$mod|$exc"
        }}
        $results
    }} else {{ 'NONE' }}
}} catch {{ 'ERROR:' + $_.Exception.Message }}
"#
        );

        let raw = ps_exec(&ps);
        let text = raw.trim();

        // WER archive count (non-blocking best-effort)
        let wer_ps = r#"
$wer = "$env:LOCALAPPDATA\Microsoft\Windows\WER"
$count = 0
if (Test-Path $wer) {
    $count = (Get-ChildItem -Path $wer -Recurse -Filter '*.wer' -ErrorAction SilentlyContinue).Count
}
$count
"#;
        let wer_count: usize = ps_exec(wer_ps).trim().parse().unwrap_or(0);

        if text == "NONE" {
            sections.push_str("=== Application crashes ===\n- No application crashes or hangs in recent event log.\n");
        } else if text.starts_with("ERROR:") {
            let msg = text.trim_start_matches("ERROR:").trim();
            let _ = write!(
                sections,
                "=== Application crashes ===\n- Unable to query Application event log: {msg}\n"
            );
        } else {
            let events: Vec<&str> = text.lines().filter(|l| l.contains('|')).collect();
            let crash_count = events
                .iter()
                .filter(|l| l.split('|').nth(1) == Some("CRASH"))
                .count();
            let hang_count = events
                .iter()
                .filter(|l| l.split('|').nth(1) == Some("HANG"))
                .count();

            // Tally crashes per app
            let mut app_counts: std::collections::HashMap<String, usize> =
                std::collections::HashMap::new();
            for line in &events {
                let mut it = line.splitn(6, '|');
                if let (Some(_), Some(_), Some(app)) = (it.next(), it.next(), it.next()) {
                    *app_counts.entry(app.to_string()).or_insert(0) += 1;
                }
            }

            if crash_count > 0 {
                findings.push(format!(
                    "{crash_count} application crash event(s) — review below for faulting app and exception code."
                ));
            }
            if hang_count > 0 {
                findings.push(format!(
                    "{hang_count} application hang event(s) — process stopped responding."
                ));
            }
            if let Some((top_app, &count)) = app_counts.iter().max_by_key(|(_, c)| *c) {
                if count > 1 {
                    findings.push(format!(
                        "Most-crashed application: {top_app} ({count} events) — may indicate corrupted install or incompatible module."
                    ));
                }
            }
            if wer_count > 10 {
                findings.push(format!(
                    "{wer_count} WER reports archived — elevated crash history on this machine."
                ));
            }

            let filter_note = match process_filter {
                Some(p) => format!(" (filtered: {p})"),
                None => String::new(),
            };
            let _ = writeln!(
                sections,
                "=== Application crashes and hangs{filter_note} ==="
            );

            for line in &events {
                let mut it = line.splitn(6, '|');
                if let (Some(time), Some(kind), Some(app), Some(ver), Some(module), Some(exc)) = (
                    it.next(),
                    it.next(),
                    it.next(),
                    it.next(),
                    it.next(),
                    it.next(),
                ) {
                    let ver_note = if !ver.is_empty() {
                        format!(" v{ver}")
                    } else {
                        String::new()
                    };
                    let _ = writeln!(sections, "  [{time}] {kind}: {app}{ver_note}");
                    if !module.is_empty() && module != "?" {
                        let exc_note = if !exc.is_empty() {
                            format!(" (exc {exc})")
                        } else {
                            String::new()
                        };
                        let _ = writeln!(sections, "    faulting module: {module}{exc_note}");
                    } else if !exc.is_empty() {
                        let _ = writeln!(sections, "    exception: {exc}");
                    }
                }
            }
            let _ = write!(
                sections,
                "\n  Total: {crash_count} crash(es), {hang_count} hang(s)\n"
            );

            if wer_count > 0 {
                let _ = write!(sections,
                    "\n=== Windows Error Reporting ===\n  WER archive: {wer_count} report(s) in %LOCALAPPDATA%\\Microsoft\\Windows\\WER\n"
                );
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        let _ = (process_filter, n);
        sections.push_str("=== Application crashes ===\n- Windows-only (uses Application Event Log, Event IDs 1000/1002).\n");
    }

    let mut result = String::from("Host inspection: app_crashes\n\n=== Findings ===\n");
    if findings.is_empty() {
        result.push_str("- No actionable findings.\n");
    } else {
        for f in &findings {
            let _ = writeln!(result, "- Finding: {f}");
        }
    }
    result.push('\n');
    result.push_str(&sections);
    Ok(result.trim_end().to_string())
}

#[cfg(target_os = "windows")]
fn gpu_voltage_telemetry_note() -> String {
    let output = Command::new("nvidia-smi")
        .args(["--help-query-gpu"])
        .output();

    match output {
        Ok(o) => {
            let text = String::from_utf8_lossy(&o.stdout).to_ascii_lowercase();
            if text.contains("\"voltage\"") || text.contains("voltage.") {
                "Driver query surface advertises GPU voltage fields, but Hematite is not yet decoding them on this path.".to_string()
            } else {
                "Unavailable on this NVIDIA driver path: `nvidia-smi` exposes clocks, fans, power, and throttle reasons here, but not a GPU voltage rail query.".to_string()
            }
        }
        Err(_) => "Unavailable: `nvidia-smi` is not present, so Hematite cannot verify whether this driver path exposes GPU voltage rails.".to_string(),
    }
}

#[cfg(target_os = "windows")]
fn decode_wmi_processor_voltage(raw: u64) -> Option<String> {
    if raw == 0 {
        return None;
    }
    if raw & 0x80 != 0 {
        let tenths = raw & 0x7f;
        return Some(format!(
            "{:.1} V (firmware-reported WMI current voltage)",
            tenths as f64 / 10.0
        ));
    }

    let legacy = match raw {
        1 => Some("5.0 V"),
        2 => Some("3.3 V"),
        4 => Some("2.9 V"),
        _ => None,
    }?;
    Some(format!(
        "{} (legacy WMI voltage capability flag, not live telemetry)",
        legacy
    ))
}

async fn inspect_overclocker() -> Result<String, String> {
    let mut out = String::from("Host inspection: overclocker\n\n");

    #[cfg(target_os = "windows")]
    {
        out.push_str(
            "Gathering real-time silicon telemetry (2-second high-fidelity average)...\n\n",
        );

        // 1. NVIDIA Census
        let nvidia = Command::new("nvidia-smi")
            .args([
                "--query-gpu=name,clocks.current.graphics,clocks.current.memory,fan.speed,power.draw,temperature.gpu,power.draw.average,power.draw.instant,power.limit,enforced.power.limit,clocks_throttle_reasons.active",
                "--format=csv,noheader,nounits",
            ])
            .output();

        if let Ok(o) = nvidia {
            let stdout = String::from_utf8_lossy(&o.stdout);
            if !stdout.trim().is_empty() {
                out.push_str("=== GPU SENSE (NVIDIA) ===\n");
                let mut parts = Vec::with_capacity(16);
                parts.extend(stdout.trim().split(',').map(|s| s.trim()));
                if parts.len() >= 10 {
                    let _ = writeln!(out, "- Model:      {}", parts[0]);
                    let _ = writeln!(out, "- Graphics:   {} MHz", parts[1]);
                    let _ = writeln!(out, "- Memory:     {} MHz", parts[2]);
                    let _ = writeln!(out, "- Fan Speed:  {}%", parts[3]);
                    let _ = writeln!(out, "- Power Draw: {} W", parts[4]);
                    if !parts[6].eq_ignore_ascii_case("[N/A]") {
                        let _ = writeln!(out, "- Power Avg:  {} W", parts[6]);
                    }
                    if !parts[7].eq_ignore_ascii_case("[N/A]") {
                        let _ = writeln!(out, "- Power Inst: {} W", parts[7]);
                    }
                    if !parts[8].eq_ignore_ascii_case("[N/A]") {
                        let _ = writeln!(out, "- Power Cap:  {} W requested", parts[8]);
                    }
                    if !parts[9].eq_ignore_ascii_case("[N/A]") {
                        let _ = writeln!(out, "- Power Enf:  {} W enforced", parts[9]);
                    }
                    let _ = writeln!(out, "- Temperature: {}°C", parts[5]);

                    if parts.len() > 10 {
                        let throttle_hex = parts[10];
                        let reasons = decode_nvidia_throttle_reasons(throttle_hex);
                        if !reasons.is_empty() {
                            let _ = writeln!(out, "- Throttling:  YES [Reason: {}]", reasons);
                        } else {
                            out.push_str("- Throttling:  None (Performance State: Max)\n");
                        }
                    }
                }
                out.push('\n');
            }
        }

        out.push_str("=== VOLTAGE TELEMETRY ===\n");
        let _ = write!(out, "- GPU Voltage:  {}\n\n", gpu_voltage_telemetry_note());

        // 1b. Session Trends (RAM-only historians)
        let gpu_state = &crate::ui::gpu_monitor::GLOBAL_GPU_STATE;
        let history = gpu_state.history.read().unwrap();
        if history.len() >= 2 {
            out.push_str("=== SILICON TRENDS (Session) ===\n");
            let first = history.front().unwrap();
            let last = history.back().unwrap();

            let temp_diff = last.temperature as i32 - first.temperature as i32;
            let clock_diff = last.core_clock as i32 - first.core_clock as i32;

            let temp_trend = if temp_diff > 1 {
                "Rising"
            } else if temp_diff < -1 {
                "Falling"
            } else {
                "Stable"
            };
            let clock_trend = if clock_diff > 10 {
                "Increasing"
            } else if clock_diff < -10 {
                "Decreasing"
            } else {
                "Stable"
            };

            let _ = writeln!(
                out,
                "- Temperature: {} ({}°C anomaly)",
                temp_trend, temp_diff
            );
            let _ = writeln!(
                out,
                "- Core Clock:  {} ({} MHz delta)",
                clock_trend, clock_diff
            );
            out.push('\n');
        }

        // 2. CPU Time-Series (2 samples)
        let ps_cmd = "Get-Counter -Counter '\\Processor Information(_Total)\\Processor Frequency', '\\Processor Information(_Total)\\% of Maximum Frequency' -SampleInterval 1 -MaxSamples 2 | ForEach-Object { $_.CounterSamples } | Group-Object Path | ForEach-Object { \"$($_.Name):$([math]::Round(($_.Group | Measure-Object CookedValue -Average).Average, 0))\" }";
        let cpu_stats = Command::new("powershell")
            .args(["-NoProfile", "-Command", ps_cmd])
            .output();

        if let Ok(o) = cpu_stats {
            let stdout = String::from_utf8_lossy(&o.stdout);
            if !stdout.trim().is_empty() {
                out.push_str("=== SILICON CORE (CPU) ===\n");
                for line in stdout.lines() {
                    if let Some((path, val)) = line.split_once(':') {
                        let path_lower = path.to_lowercase();
                        if path_lower.contains("processor frequency") {
                            let _ = writeln!(out, "- Current Freq:  {} MHz (2s Avg)", val);
                        } else if path_lower.contains("% of maximum frequency") {
                            let _ = writeln!(out, "- Throttling:     {}% of Max Capacity", val);
                            let throttle_num = val.parse::<f64>().unwrap_or(100.0);
                            if throttle_num < 95.0 {
                                out.push_str(
                                    "  [WARNING] Active downclocking or power-saving detected.\n",
                                );
                            }
                        }
                    }
                }
            }
        }

        // 2b. CPU Thermal Fallback
        let thermal = Command::new("powershell")
            .args([
                "-NoProfile",
                "-Command",
                "Get-CimInstance -Namespace root\\wmi -ClassName MSAcpi_ThermalZoneTemperature | Select-Object @{N='Temp';E={($_.CurrentTemperature - 2732) / 10}} | ConvertTo-Json",
            ])
            .output();
        if let Ok(o) = thermal {
            let stdout = String::from_utf8_lossy(&o.stdout);
            if let Ok(v) = serde_json::from_str::<Value>(&stdout) {
                let temp = if v.is_array() {
                    v[0].get("Temp").and_then(|x| x.as_f64()).unwrap_or(0.0)
                } else {
                    v.get("Temp").and_then(|x| x.as_f64()).unwrap_or(0.0)
                };
                if temp > 1.0 {
                    let _ = writeln!(out, "- CPU Package:   {}°C (ACPI Zone)", temp);
                }
            }
        }

        // 3. WMI Static Fallback/Context
        let wmi = Command::new("powershell")
            .args([
                "-NoProfile",
                "-Command",
                "Get-CimInstance Win32_Processor | Select-Object Name, MaxClockSpeed, CurrentVoltage | ConvertTo-Json",
            ])
            .output();

        if let Ok(o) = wmi {
            let stdout = String::from_utf8_lossy(&o.stdout);
            if let Ok(v) = serde_json::from_str::<Value>(&stdout) {
                out.push_str("\n=== HARDWARE DNA ===\n");
                let _ = writeln!(
                    out,
                    "- Rated Max:     {} MHz",
                    v.get("MaxClockSpeed").and_then(|x| x.as_u64()).unwrap_or(0)
                );
                match v.get("CurrentVoltage").and_then(|x| x.as_u64()) {
                    Some(raw) => {
                        if let Some(decoded) = decode_wmi_processor_voltage(raw) {
                            let _ = writeln!(out, "- CPU Voltage:   {}", decoded);
                        } else {
                            out.push_str(
                                "- CPU Voltage:   Unavailable or non-telemetry WMI value on this firmware path\n",
                            );
                        }
                    }
                    None => out.push_str("- CPU Voltage:   Unavailable on this WMI path\n"),
                }
            }
        }
    }

    #[cfg(not(target_os = "windows"))]
    {
        out.push_str("Overclocker telemetry is currently optimized for Windows performance counters and NVIDIA drivers.\n");
    }

    Ok(out.trim_end().to_string())
}

/// Decodes the NVIDIA Clocks Throttle Reasons HEX bitmask.
#[cfg(target_os = "windows")]
fn decode_nvidia_throttle_reasons(hex: &str) -> String {
    let hex = hex.trim().trim_start_matches("0x");
    let val = match u64::from_str_radix(hex, 16) {
        Ok(v) => v,
        Err(_) => return String::new(),
    };

    if val == 0 {
        return String::new();
    }

    let mut reasons = Vec::with_capacity(9);
    if val & 0x01 != 0 {
        reasons.push("GPU Idle");
    }
    if val & 0x02 != 0 {
        reasons.push("Applications Clocks Setting");
    }
    if val & 0x04 != 0 {
        reasons.push("SW Power Cap (PL1/PL2)");
    }
    if val & 0x08 != 0 {
        reasons.push("HW Slowdown (Thermal/Power)");
    }
    if val & 0x10 != 0 {
        reasons.push("Sync Boost");
    }
    if val & 0x20 != 0 {
        reasons.push("SW Thermal Slowdown");
    }
    if val & 0x40 != 0 {
        reasons.push("HW Thermal Slowdown");
    }
    if val & 0x80 != 0 {
        reasons.push("HW Power Brake Slowdown");
    }
    if val & 0x100 != 0 {
        reasons.push("Display Clock Setting");
    }

    reasons.join(", ")
}

// ── PowerShell helper (used by camera / sign_in / search_index) ───────────────

#[cfg(windows)]
fn run_powershell(script: &str) -> Result<String, String> {
    use std::process::Command;
    let out = Command::new("powershell")
        .args(["-NoProfile", "-NonInteractive", "-Command", script])
        .output()
        .map_err(|e| format!("powershell launch failed: {e}"))?;
    Ok(String::from_utf8_lossy(&out.stdout).into_owned())
}

// ── inspect_camera ────────────────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_camera(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("=== Camera devices ===\n");

    // PnP camera devices
    let ps_devices = r#"
Get-PnpDevice -Class Camera -ErrorAction SilentlyContinue | Select-Object -First 20 |
ForEach-Object {
    $status = if ($_.Status -eq 'OK') { 'OK' } else { $_.Status }
    "$($_.FriendlyName) | Status: $status | InstanceId: $($_.InstanceId)"
}
"#;
    match run_powershell(ps_devices) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- No camera devices found via PnP\n"),
    }

    // Windows privacy / capability gate
    out.push_str("\n=== Windows camera privacy ===\n");
    let ps_privacy = r#"
$camKey = 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\CapabilityAccessManager\ConsentStore\webcam'
$global = (Get-ItemProperty -Path $camKey -Name Value -ErrorAction SilentlyContinue).Value
"Global: $global"
$apps = Get-ChildItem $camKey -ErrorAction SilentlyContinue |
    Where-Object { $_.PSChildName -ne 'NonPackaged' } |
    ForEach-Object {
        $v = (Get-ItemProperty $_.PSPath -Name Value -ErrorAction SilentlyContinue).Value
        if ($v) { "  $($_.PSChildName): $v" }
    }
$apps
"#;
    match run_powershell(ps_privacy) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries) {
                let l = line.trim_end();
                if !l.is_empty() {
                    let _ = writeln!(out, "{l}");
                }
            }
        }
        _ => out.push_str("- Could not read camera privacy registry\n"),
    }

    // Windows Hello camera (IR / face auth)
    out.push_str("\n=== Biometric / Hello camera ===\n");
    let ps_bio = r#"
Get-PnpDevice -Class Biometric -ErrorAction SilentlyContinue | Select-Object -First 10 |
ForEach-Object { "$($_.FriendlyName) | Status: $($_.Status)" }
"#;
    match run_powershell(ps_bio) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- No biometric devices found\n"),
    }

    // Findings
    let mut findings: Vec<String> = Vec::with_capacity(4);
    if out.contains("Status: Error") || out.contains("Status: Unknown") {
        findings.push("One or more camera devices report a non-OK status — check Device Manager for driver errors.".into());
    }
    if out.contains("Global: Deny") {
        findings.push("Camera access is globally DENIED in Windows privacy settings — apps cannot use the camera until this is re-enabled (Settings > Privacy > Camera).".into());
    }

    let mut result = String::from("Host inspection: camera\n\n=== Findings ===\n");
    if findings.is_empty() {
        result.push_str("- No obvious camera or privacy gate issue detected.\n");
        result.push_str("  If an app still can't see the camera, check its individual permission in Settings > Privacy > Camera.\n");
    } else {
        for f in &findings {
            let _ = writeln!(result, "- Finding: {f}");
        }
    }
    result.push('\n');
    result.push_str(&out);
    Ok(result)
}

#[cfg(not(windows))]
fn inspect_camera(_max_entries: usize) -> Result<String, String> {
    Ok("Host inspection: camera\nCamera inspection is Windows-only.".into())
}

// ── inspect_sign_in ───────────────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_sign_in(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("=== Windows Hello and sign-in state ===\n");

    // Windows Hello PIN and face/fingerprint readiness
    let ps_hello = r#"
$helloKey = 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI'
$pinConfigured = Test-Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Provisioning\FingerPrint' -ErrorAction SilentlyContinue
$faceConfigured = (Get-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Services\WbioSrvc' -Name Start -ErrorAction SilentlyContinue).Start
"PIN-style logon path: $helloKey"
"WbioSrvc start type: $faceConfigured"
"FingerPrint key present: $pinConfigured"
"#;
    match run_powershell(ps_hello) {
        Ok(o) => {
            for line in o.lines().take(max_entries) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        Err(e) => {
            let _ = writeln!(out, "- Hello query error: {e}");
        }
    }

    // Biometric service state
    out.push_str("\n=== Biometric service ===\n");
    let ps_bio_svc = r#"
$svc = Get-Service WbioSrvc -ErrorAction SilentlyContinue
if ($svc) { "WbioSrvc | Status: $($svc.Status) | StartType: $($svc.StartType)" }
else { "WbioSrvc not found" }
"#;
    match run_powershell(ps_bio_svc) {
        Ok(o) => {
            let _ = writeln!(out, "- {}", o.trim());
        }
        Err(_) => out.push_str("- Could not query biometric service\n"),
    }

    // Recent logon failure events
    out.push_str("\n=== Recent sign-in failures (last 24h) ===\n");
    let ps_events = r#"
$cutoff = (Get-Date).AddHours(-24)
Get-WinEvent -LogName Security -FilterXPath "*[System[EventID=4625 and TimeCreated[timediff(@SystemTime) <= 86400000]]]" -MaxEvents 10 -ErrorAction SilentlyContinue |
ForEach-Object {
    $xml = [xml]$_.ToXml()
    $reason = ($xml.Event.EventData.Data | Where-Object { $_.Name -eq 'FailureReason' }).'#text'
    $account = ($xml.Event.EventData.Data | Where-Object { $_.Name -eq 'TargetUserName' }).'#text'
    "$($_.TimeCreated.ToString('HH:mm')) | Account: $account | Reason: $reason"
} | Select-Object -First 10
"#;
    match run_powershell(ps_events) {
        Ok(o) if !o.trim().is_empty() => {
            let count = o.lines().filter(|l| !l.trim().is_empty()).count();
            let _ = writeln!(out, "- {count} recent logon failure(s) detected:");
            for line in o.lines().take(max_entries) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "  {l}");
                }
            }
        }
        _ => out.push_str("- No sign-in failures in the last 24h (or insufficient privileges to read Security log)\n"),
    }

    // Credential providers
    out.push_str("\n=== Active credential providers ===\n");
    let ps_cp = r#"
Get-ChildItem 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\Credential Providers' -ErrorAction SilentlyContinue |
ForEach-Object {
    $name = (Get-ItemProperty $_.PSPath -Name '(default)' -ErrorAction SilentlyContinue).'(default)'
    if ($name) { $name }
} | Select-Object -First 15
"#;
    match run_powershell(ps_cp) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not enumerate credential providers\n"),
    }

    let mut findings: Vec<String> = Vec::with_capacity(4);
    if out.contains("WbioSrvc | Status: Stopped") {
        findings.push("Windows Biometric Service is stopped — Windows Hello face/fingerprint will not work until it is running.".into());
    }
    if out.contains("recent logon failure") && !out.contains("0 recent") {
        findings.push("Recent sign-in failures detected — check the Security event log for account lockout or credential issues.".into());
    }

    let mut result = String::from("Host inspection: sign_in\n\n=== Findings ===\n");
    if findings.is_empty() {
        result.push_str("- No obvious sign-in or Windows Hello service failure detected.\n");
        result.push_str("  If Hello is prompting for PIN or won't recognize you, try Settings > Accounts > Sign-in options > Repair.\n");
    } else {
        for f in &findings {
            let _ = writeln!(result, "- Finding: {f}");
        }
    }
    result.push('\n');
    result.push_str(&out);
    Ok(result)
}

#[cfg(not(windows))]
fn inspect_sign_in(_max_entries: usize) -> Result<String, String> {
    Ok("Host inspection: sign_in\nSign-in / Windows Hello inspection is Windows-only.".into())
}

// ── inspect_installer_health ──────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_installer_health(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("=== Installer engines ===\n");

    let ps_engines = r#"
$services = 'msiserver','AppXSvc','ClipSVC','InstallService'
foreach ($name in $services) {
    $svc = Get-Service -Name $name -ErrorAction SilentlyContinue
    if ($svc) {
        $cim = Get-CimInstance Win32_Service -Filter "Name='$name'" -ErrorAction SilentlyContinue
        $startType = if ($cim) { $cim.StartMode } else { 'Unknown' }
        "$name | Status: $($svc.Status) | StartType: $startType"
    } else {
        "$name | Not present"
    }
}
if (Test-Path "$env:WINDIR\System32\msiexec.exe") {
    "msiexec.exe | Present: Yes"
} else {
    "msiexec.exe | Present: No"
}
"#;
    match run_powershell(ps_engines) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 6) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect installer engine services\n"),
    }

    out.push_str("\n=== winget and App Installer ===\n");
    let ps_winget = r#"
$cmd = Get-Command winget -ErrorAction SilentlyContinue
if ($cmd) {
    try {
        $v = & winget --version 2>$null
        if ($LASTEXITCODE -eq 0 -and $v) { "winget | Version: $v" } else { "winget | Present but version query failed" }
    } catch { "winget | Present but invocation failed" }
} else {
    "winget | Missing"
}
$appInstaller = Get-AppxPackage Microsoft.DesktopAppInstaller -ErrorAction SilentlyContinue
if ($appInstaller) {
    "DesktopAppInstaller | Version: $($appInstaller.Version) | Status: Present"
} else {
    "DesktopAppInstaller | Status: Missing"
}
"#;
    match run_powershell(ps_winget) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect winget/App Installer state\n"),
    }

    out.push_str("\n=== Microsoft Store packages ===\n");
    let ps_store = r#"
$store = Get-AppxPackage Microsoft.WindowsStore -ErrorAction SilentlyContinue
if ($store) {
    "Microsoft.WindowsStore | Version: $($store.Version) | Status: Present"
} else {
    "Microsoft.WindowsStore | Status: Missing"
}
"#;
    match run_powershell(ps_store) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect Microsoft Store package state\n"),
    }

    out.push_str("\n=== Reboot and transaction blockers ===\n");
    let ps_blockers = r#"
$pending = $false
if (Test-Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\RebootPending') {
    "RebootPending: CBS"
    $pending = $true
}
if (Test-Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired') {
    "RebootPending: WindowsUpdate"
    $pending = $true
}
$rename = (Get-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager' -Name PendingFileRenameOperations -ErrorAction SilentlyContinue).PendingFileRenameOperations
if ($rename) {
    "PendingFileRenameOperations: Yes"
    $pending = $true
}
if (Test-Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\InProgress') {
    "InstallerInProgress: Yes"
    $pending = $true
}
if (-not $pending) { "No pending reboot or installer-in-progress flag detected" }
"#;
    match run_powershell(ps_blockers) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect reboot or transaction blockers\n"),
    }

    out.push_str("\n=== Recent installer failures (7d) ===\n");
    let ps_failures = r#"
$cutoff = (Get-Date).AddDays(-7)
$msi = Get-WinEvent -FilterHashtable @{ LogName='Application'; ProviderName='MsiInstaller'; StartTime=$cutoff; Level=2 } -MaxEvents 6 -ErrorAction SilentlyContinue |
    ForEach-Object { "MSI | $($_.TimeCreated.ToString('MM-dd HH:mm')) | EventId: $($_.Id) | $($_.Message -replace '\s+', ' ')" }
$appx = Get-WinEvent -LogName 'Microsoft-Windows-AppXDeploymentServer/Operational' -ErrorAction SilentlyContinue -MaxEvents 30 |
    Where-Object { $_.LevelDisplayName -eq 'Error' -and $_.TimeCreated -ge $cutoff } |
    Select-Object -First 6 |
    ForEach-Object { "AppX | $($_.TimeCreated.ToString('MM-dd HH:mm')) | EventId: $($_.Id) | $($_.Message -replace '\s+', ' ')" }
$all = @($msi) + @($appx)
if ($all.Count -eq 0) {
    "No recent MSI/AppX installer errors detected"
} else {
    $all | Select-Object -First 8
}
"#;
    match run_powershell(ps_failures) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 2) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect recent installer failure events\n"),
    }

    let mut findings: Vec<String> = Vec::with_capacity(4);
    if out.contains("msiserver | Status: Stopped | StartType: Disabled") {
        findings.push("Windows Installer service (msiserver) is disabled - MSI installs cannot start until it is re-enabled.".into());
    }
    if out.contains("msiexec.exe | Present: No") {
        findings.push("msiexec.exe is missing from System32 - MSI installs will fail until Windows Installer is repaired.".into());
    }
    if out.contains("winget | Missing") {
        findings.push(
            "winget is missing - App Installer may not be installed or registered for this user."
                .into(),
        );
    }
    if out.contains("DesktopAppInstaller | Status: Missing") {
        findings.push("Microsoft Desktop App Installer is missing - winget and some app-installer flows will be unavailable.".into());
    }
    if out.contains("Microsoft.WindowsStore | Status: Missing") {
        findings.push(
            "Microsoft Store package is missing - Store-sourced installs and repairs may not work."
                .into(),
        );
    }
    if out.contains("RebootPending:") || out.contains("PendingFileRenameOperations: Yes") {
        findings.push("A pending reboot is present - installer transactions may stay blocked until the machine restarts.".into());
    }
    if out.contains("InstallerInProgress: Yes") {
        findings.push("Windows reports an installer transaction already in progress - concurrent installs may fail until it clears.".into());
    }
    if out.contains("MSI | ") || out.contains("AppX | ") {
        findings.push("Recent installer failures were recorded in the event logs - check the MSI/AppX error lines below for the failing package or deployment path.".into());
    }

    let mut result = String::from("Host inspection: installer_health\n\n=== Findings ===\n");
    if findings.is_empty() {
        result.push_str("- No obvious installer-platform blocker detected.\n");
    } else {
        for finding in &findings {
            let _ = writeln!(result, "- Finding: {finding}");
        }
    }
    result.push('\n');
    result.push_str(&out);
    Ok(result)
}

#[cfg(not(windows))]
fn inspect_installer_health(_max_entries: usize) -> Result<String, String> {
    Ok("Host inspection: installer_health\n\n=== Findings ===\n- Installer health is currently Windows-first. Linux/macOS package-manager triage can be added later.\n".into())
}

// ── inspect_search_index ──────────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_onedrive(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("=== OneDrive client ===\n");

    let ps_client = r#"
$candidatePaths = @(
    (Join-Path $env:LOCALAPPDATA 'Microsoft\OneDrive\OneDrive.exe'),
    (Join-Path $env:ProgramFiles 'Microsoft OneDrive\OneDrive.exe'),
    (Join-Path ${env:ProgramFiles(x86)} 'Microsoft OneDrive\OneDrive.exe')
) | Where-Object { $_ -and (Test-Path $_) }
$proc = Get-Process OneDrive -ErrorAction SilentlyContinue | Select-Object -First 1
$exe = $candidatePaths | Select-Object -First 1
if (-not $exe -and $proc) {
    try { $exe = $proc.Path } catch {}
}
if ($exe) {
    "Installed: Yes"
    "Executable: $exe"
    try { "Version: $((Get-Item $exe).VersionInfo.FileVersion)" } catch {}
} else {
    "Installed: Unknown"
}
if ($proc) {
    "Process: Running | PID: $($proc.Id)"
} else {
    "Process: Not running"
}
"#;
    match run_powershell(ps_client) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect OneDrive client state\n"),
    }

    out.push_str("\n=== OneDrive accounts ===\n");
    let ps_accounts = r#"
function MaskEmail([string]$Email) {
    if ([string]::IsNullOrWhiteSpace($Email) -or $Email -notmatch '@') { return 'Unknown' }
    $parts = $Email.Split('@', 2)
    $local = $parts[0]
    $domain = $parts[1]
    if ($local.Length -le 1) { return "*@$domain" }
    return ($local.Substring(0,1) + "***@" + $domain)
}
$base = 'HKCU:\Software\Microsoft\OneDrive\Accounts'
if (Test-Path $base) {
    Get-ChildItem $base -ErrorAction SilentlyContinue |
        Sort-Object PSChildName |
        Select-Object -First 12 |
        ForEach-Object {
            $p = Get-ItemProperty $_.PSPath -ErrorAction SilentlyContinue
            $kind = if ($_.PSChildName -eq 'Personal') { 'Personal' } else { 'Business' }
            $mail = MaskEmail ([string]$p.UserEmail)
            $root = if ([string]::IsNullOrWhiteSpace([string]$p.UserFolder)) { 'Unknown' } else { [Environment]::ExpandEnvironmentVariables([string]$p.UserFolder) }
            $exists = if ($root -eq 'Unknown') { 'Unknown' } elseif (Test-Path $root) { 'Yes' } else { 'No' }
            "$kind | Email: $mail | SyncRoot: $root | Exists: $exists"
        }
} else {
    "No OneDrive accounts configured"
}
"#;
    match run_powershell(ps_accounts) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not read OneDrive account registry state\n"),
    }

    out.push_str("\n=== OneDrive policy overrides ===\n");
    let ps_policy = r#"
$paths = @(
    'HKLM:\SOFTWARE\Policies\Microsoft\OneDrive',
    'HKCU:\SOFTWARE\Policies\Microsoft\OneDrive'
)
$names = @(
    'DisableFileSyncNGSC',
    'DisableLibrariesDefaultSaveToOneDrive',
    'KFMSilentOptIn',
    'KFMBlockOptIn',
    'SilentAccountConfig'
)
$found = $false
foreach ($path in $paths) {
    if (Test-Path $path) {
        $p = Get-ItemProperty $path -ErrorAction SilentlyContinue
        foreach ($name in $names) {
            $value = $p.$name
            if ($null -ne $value -and [string]$value -ne '') {
                "$path | $name=$value"
                $found = $true
            }
        }
    }
}
if (-not $found) { "No OneDrive policy overrides detected" }
"#;
    match run_powershell(ps_policy) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not read OneDrive policy state\n"),
    }

    out.push_str("\n=== Known Folder Backup ===\n");
    let ps_kfm = r#"
$base = 'HKCU:\Software\Microsoft\OneDrive\Accounts'
$roots = @()
if (Test-Path $base) {
    Get-ChildItem $base -ErrorAction SilentlyContinue | ForEach-Object {
        $p = Get-ItemProperty $_.PSPath -ErrorAction SilentlyContinue
        if ($p.UserFolder) {
            $roots += [Environment]::ExpandEnvironmentVariables([string]$p.UserFolder)
        }
    }
}
$roots = $roots | Select-Object -Unique
$shell = 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders'
if (Test-Path $shell) {
    $props = Get-ItemProperty $shell -ErrorAction SilentlyContinue
    $folders = @(
        @{ Name='Desktop'; Value=$props.Desktop },
        @{ Name='Documents'; Value=$props.Personal },
        @{ Name='Pictures'; Value=$props.'My Pictures' }
    )
    foreach ($folder in $folders) {
        $path = [Environment]::ExpandEnvironmentVariables([string]$folder.Value)
        if ([string]::IsNullOrWhiteSpace($path)) { $path = 'Unknown' }
        $protected = $false
        foreach ($root in $roots) {
            if (-not [string]::IsNullOrWhiteSpace([string]$root) -and $path.ToLower().StartsWith($root.ToLower())) {
                $protected = $true
                break
            }
        }
        "$($folder.Name) | Path: $path | In OneDrive: $(if ($protected) { 'Yes' } else { 'No' })"
    }
} else {
    "Explorer shell folders unavailable"
}
"#;
    match run_powershell(ps_kfm) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect Known Folder Backup state\n"),
    }

    let mut findings: Vec<String> = Vec::with_capacity(4);
    if out.contains("Installed: Unknown") && !out.contains("Process: Running") {
        findings.push("OneDrive client installation could not be confirmed from standard paths in this session.".into());
    }
    if out.contains("No OneDrive accounts configured") {
        findings.push(
            "No OneDrive accounts are configured - sync cannot start until the user signs in."
                .into(),
        );
    }
    if out.contains("Process: Not running") && !out.contains("No OneDrive accounts configured") {
        findings.push("OneDrive accounts exist but the sync client is not running - sync may be paused until OneDrive starts.".into());
    }
    if out.contains("Exists: No") {
        findings.push("One or more configured OneDrive sync roots do not exist on disk - account linkage or folder redirection may be broken.".into());
    }
    if out.contains("DisableFileSyncNGSC=1") {
        findings
            .push("A OneDrive policy is disabling the sync client (DisableFileSyncNGSC=1).".into());
    }
    if out.contains("KFMBlockOptIn=1") {
        findings
            .push("A policy is blocking Known Folder Backup enrollment (KFMBlockOptIn=1).".into());
    }
    if out.contains("SyncRoot: C:\\") {
        let mut missing_kfm: Vec<&str> = Vec::new();
        for folder in ["Desktop", "Documents", "Pictures"] {
            if out.lines().any(|line| {
                line.contains(&format!("{folder} | Path:")) && line.contains("| In OneDrive: No")
            }) {
                missing_kfm.push(folder);
            }
        }
        if !missing_kfm.is_empty() {
            findings.push(format!(
                "Known Folder Backup is not protecting {} - those folders are outside the OneDrive sync root.",
                missing_kfm.join(", ")
            ));
        }
    }

    let mut result = String::from("Host inspection: onedrive\n\n=== Findings ===\n");
    if findings.is_empty() {
        result.push_str("- No obvious OneDrive client, account, or policy blocker detected.\n");
    } else {
        for finding in &findings {
            let _ = writeln!(result, "- Finding: {finding}");
        }
    }
    result.push('\n');
    result.push_str(&out);
    Ok(result)
}

#[cfg(not(windows))]
fn inspect_onedrive(_max_entries: usize) -> Result<String, String> {
    Ok("Host inspection: onedrive\n\n=== Findings ===\n- OneDrive inspection is currently Windows-first. macOS/Linux support can be added later.\n".into())
}

#[cfg(windows)]
fn inspect_browser_health(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("=== Browser inventory ===\n");

    let ps_inventory = r#"
$browsers = @(
    @{ Name='Edge'; Paths=@(
        (Join-Path ${env:ProgramFiles(x86)} 'Microsoft\Edge\Application\msedge.exe'),
        (Join-Path $env:ProgramFiles 'Microsoft\Edge\Application\msedge.exe')
    ); Profile=(Join-Path $env:LOCALAPPDATA 'Microsoft\Edge\User Data') },
    @{ Name='Chrome'; Paths=@(
        (Join-Path $env:ProgramFiles 'Google\Chrome\Application\chrome.exe'),
        (Join-Path ${env:ProgramFiles(x86)} 'Google\Chrome\Application\chrome.exe'),
        (Join-Path $env:LOCALAPPDATA 'Google\Chrome\Application\chrome.exe')
    ); Profile=(Join-Path $env:LOCALAPPDATA 'Google\Chrome\User Data') },
    @{ Name='Firefox'; Paths=@(
        (Join-Path $env:ProgramFiles 'Mozilla Firefox\firefox.exe'),
        (Join-Path ${env:ProgramFiles(x86)} 'Mozilla Firefox\firefox.exe')
    ); Profile=(Join-Path $env:APPDATA 'Mozilla\Firefox\Profiles') }
)
foreach ($browser in $browsers) {
    $exe = $browser.Paths | Where-Object { $_ -and (Test-Path $_) } | Select-Object -First 1
    if ($exe) {
        $version = try { (Get-Item $exe).VersionInfo.FileVersion } catch { 'Unknown' }
        $profileExists = if (Test-Path $browser.Profile) { 'Yes' } else { 'No' }
        "$($browser.Name) | Installed: Yes | Version: $version | Executable: $exe | ProfileRoot: $($browser.Profile) | ProfileExists: $profileExists"
    } else {
        "$($browser.Name) | Installed: No"
    }
}
$httpProgId = (Get-ItemProperty 'HKCU:\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\http\UserChoice' -Name ProgId -ErrorAction SilentlyContinue).ProgId
$httpsProgId = (Get-ItemProperty 'HKCU:\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\https\UserChoice' -Name ProgId -ErrorAction SilentlyContinue).ProgId
$startMenuInternet = (Get-ItemProperty 'HKLM:\SOFTWARE\Clients\StartMenuInternet' -Name '(default)' -ErrorAction SilentlyContinue).'(default)'
"DefaultHTTP: $(if ($httpProgId) { $httpProgId } else { 'Unknown' })"
"DefaultHTTPS: $(if ($httpsProgId) { $httpsProgId } else { 'Unknown' })"
"StartMenuInternet: $(if ($startMenuInternet) { $startMenuInternet } else { 'Unknown' })"
"#;
    match run_powershell(ps_inventory) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 6) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect installed browser inventory\n"),
    }

    out.push_str("\n=== Runtime state ===\n");
    let ps_runtime = r#"
$targets = 'msedge','chrome','firefox','msedgewebview2'
foreach ($name in $targets) {
    $procs = Get-Process -Name $name -ErrorAction SilentlyContinue
    if ($procs) {
        $count = @($procs).Count
        $wsMb = [Math]::Round((($procs | Measure-Object WorkingSet64 -Sum).Sum / 1MB), 1)
        "$name | Processes: $count | WorkingSetMB: $wsMb"
    } else {
        "$name | Processes: 0 | WorkingSetMB: 0"
    }
}
"#;
    match run_powershell(ps_runtime) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 4) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect browser runtime state\n"),
    }

    out.push_str("\n=== WebView2 runtime ===\n");
    let ps_webview = r#"
$paths = @(
    (Join-Path ${env:ProgramFiles(x86)} 'Microsoft\EdgeWebView\Application'),
    (Join-Path $env:ProgramFiles 'Microsoft\EdgeWebView\Application')
) | Where-Object { $_ -and (Test-Path $_) }
$runtimeDir = $paths | ForEach-Object {
    Get-ChildItem $_ -Directory -ErrorAction SilentlyContinue |
        Where-Object { $_.Name -match '^\d+\.' } |
        Sort-Object Name -Descending |
        Select-Object -First 1
} | Select-Object -First 1
if ($runtimeDir) {
    $exe = Join-Path $runtimeDir.FullName 'msedgewebview2.exe'
    $version = if (Test-Path $exe) { try { (Get-Item $exe).VersionInfo.FileVersion } catch { $runtimeDir.Name } } else { $runtimeDir.Name }
    "Installed: Yes"
    "Version: $version"
    "Executable: $exe"
} else {
    "Installed: No"
}
$proc = Get-Process msedgewebview2 -ErrorAction SilentlyContinue
"ProcessCount: $(if ($proc) { @($proc).Count } else { 0 })"
"#;
    match run_powershell(ps_webview) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect WebView2 runtime\n"),
    }

    out.push_str("\n=== Policy and proxy surface ===\n");
    let ps_policy = r#"
$proxy = Get-ItemProperty 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings' -ErrorAction SilentlyContinue
$proxyEnabled = if ($null -ne $proxy.ProxyEnable) { $proxy.ProxyEnable } else { 'Unknown' }
$proxyServer = if ($proxy.ProxyServer) { $proxy.ProxyServer } else { 'Direct' }
$autoConfig = if ($proxy.AutoConfigURL) { $proxy.AutoConfigURL } else { 'None' }
$autoDetect = if ($null -ne $proxy.AutoDetect) { $proxy.AutoDetect } else { 'Unknown' }
"UserProxyEnabled: $proxyEnabled"
"UserProxyServer: $proxyServer"
"UserAutoConfigURL: $autoConfig"
"UserAutoDetect: $autoDetect"
$winhttp = (netsh winhttp show proxy 2>$null) -join ' '
if ($winhttp) {
    $normalized = ($winhttp -replace '\s+', ' ').Trim()
    $isDirect = $normalized -match 'Direct access \(no proxy server\)\.?$'
    "WinHTTPMode: $(if ($isDirect) { 'Direct' } else { 'Proxy' })"
    "WinHTTP: $normalized"
}
$policyTargets = @(
    @{ Name='Edge'; Path='HKLM:\SOFTWARE\Policies\Microsoft\Edge'; Keys=@('ProxyMode','ProxyServer','ProxyPacUrl','ExtensionInstallForcelist') },
    @{ Name='Chrome'; Path='HKLM:\SOFTWARE\Policies\Google\Chrome'; Keys=@('ProxyMode','ProxyServer','ProxyPacUrl','ExtensionInstallForcelist') }
)
foreach ($policy in $policyTargets) {
    if (Test-Path $policy.Path) {
        $item = Get-ItemProperty $policy.Path -ErrorAction SilentlyContinue
        foreach ($key in $policy.Keys) {
            $value = $item.$key
            if ($null -ne $value -and [string]$value -ne '') {
                if ($value -is [array]) {
                    "$($policy.Name)Policy | $key=$([string]::Join('; ', $value))"
                } else {
                    "$($policy.Name)Policy | $key=$value"
                }
            }
        }
    }
}
"#;
    match run_powershell(ps_policy) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 8) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect browser policy or proxy state\n"),
    }

    out.push_str("\n=== Profile and cache pressure ===\n");
    let ps_profiles = r#"
$profiles = @(
    @{ Name='Edge'; Root=(Join-Path $env:LOCALAPPDATA 'Microsoft\Edge\User Data'); ExtensionRoot=(Join-Path $env:LOCALAPPDATA 'Microsoft\Edge\User Data\Default\Extensions') },
    @{ Name='Chrome'; Root=(Join-Path $env:LOCALAPPDATA 'Google\Chrome\User Data'); ExtensionRoot=(Join-Path $env:LOCALAPPDATA 'Google\Chrome\User Data\Default\Extensions') },
    @{ Name='Firefox'; Root=(Join-Path $env:APPDATA 'Mozilla\Firefox\Profiles'); ExtensionRoot=$null }
)
foreach ($profile in $profiles) {
    if (Test-Path $profile.Root) {
        if ($profile.Name -eq 'Firefox') {
            $dirs = Get-ChildItem $profile.Root -Directory -ErrorAction SilentlyContinue
        } else {
            $dirs = Get-ChildItem $profile.Root -Directory -ErrorAction SilentlyContinue |
                Where-Object {
                    $_.Name -eq 'Default' -or
                    $_.Name -eq 'Guest Profile' -or
                    $_.Name -eq 'System Profile' -or
                    $_.Name -like 'Profile *'
                }
        }
        $profileCount = @($dirs).Count
        $sizeBytes = (Get-ChildItem $profile.Root -Recurse -File -ErrorAction SilentlyContinue | Measure-Object Length -Sum).Sum
        if (-not $sizeBytes) { $sizeBytes = 0 }
        $sizeGb = [Math]::Round(($sizeBytes / 1GB), 2)
        $extCount = 'Unknown'
        if ($profile.ExtensionRoot -and (Test-Path $profile.ExtensionRoot)) {
            $extCount = @((Get-ChildItem $profile.ExtensionRoot -Directory -ErrorAction SilentlyContinue)).Count
        }
        "$($profile.Name) | ProfileRoot: $($profile.Root) | Profiles: $profileCount | SizeGB: $sizeGb | Extensions: $extCount"
    } else {
        "$($profile.Name) | ProfileRoot: Missing"
    }
}
"#;
    match run_powershell(ps_profiles) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 4) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect browser profile pressure\n"),
    }

    out.push_str("\n=== Recent browser failures (7d) ===\n");
    let ps_failures = r#"
$cutoff = (Get-Date).AddDays(-7)
$targets = 'chrome.exe','msedge.exe','firefox.exe','msedgewebview2.exe'
$events = Get-WinEvent -FilterHashtable @{ LogName='Application'; StartTime=$cutoff } -MaxEvents 250 -ErrorAction SilentlyContinue |
    Where-Object {
        $msg = [string]$_.Message
        ($_.ProviderName -eq 'Application Error' -or $_.ProviderName -eq 'Windows Error Reporting') -and
        ($targets | Where-Object { $msg.ToLower().Contains($_.ToLower()) })
    } |
    Select-Object -First 6
if ($events) {
    foreach ($event in $events) {
        $msg = ($event.Message -replace '\s+', ' ')
        if ($msg.Length -gt 140) { $msg = $msg.Substring(0, 140) }
        "$($event.TimeCreated.ToString('MM-dd HH:mm')) | $($event.ProviderName) | EventId: $($event.Id) | $msg"
    }
} else {
    "No recent browser crash or WER events detected"
}
"#;
    match run_powershell(ps_failures) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 2) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect recent browser failure events\n"),
    }

    let mut findings: Vec<String> = Vec::with_capacity(4);
    if out.contains("Edge | Installed: No")
        && out.contains("Chrome | Installed: No")
        && out.contains("Firefox | Installed: No")
    {
        findings.push(
            "No supported browser install was detected from the standard Edge/Chrome/Firefox paths."
                .into(),
        );
    }
    if out.contains("DefaultHTTP: Unknown") || out.contains("DefaultHTTPS: Unknown") {
        findings.push(
            "Default browser or protocol associations could not be read cleanly - links may open inconsistently."
                .into(),
        );
    }
    if out.contains("UserProxyEnabled: 1") || out.contains("WinHTTPMode: Proxy") {
        findings.push(
            "Proxy settings are active for this user or machine - browser sign-in and web-app failures may be proxy or PAC related."
                .into(),
        );
    }
    if out.contains("EdgePolicy | Proxy")
        || out.contains("ChromePolicy | Proxy")
        || out.contains("ExtensionInstallForcelist=")
    {
        findings.push(
            "Browser policy overrides are present - forced proxy or extension policy may be influencing web-app behavior."
                .into(),
        );
    }
    for browser in ["msedge", "chrome", "firefox"] {
        let process_marker = format!("{browser} | Processes: ");
        if let Some(line) = out.lines().find(|line| line.contains(&process_marker)) {
            let count = line
                .split("| Processes: ")
                .nth(1)
                .and_then(|rest| rest.split(" |").next())
                .and_then(|value| value.trim().parse::<usize>().ok())
                .unwrap_or(0);
            let ws_mb = line
                .split("| WorkingSetMB: ")
                .nth(1)
                .and_then(|value| value.trim().parse::<f64>().ok())
                .unwrap_or(0.0);
            if count >= 25 {
                findings.push(format!(
                    "{browser} is running {count} processes - extension or tab pressure may be dragging browser responsiveness."
                ));
            } else if ws_mb >= 2500.0 {
                findings.push(format!(
                    "{browser} is consuming {ws_mb:.1} MB of working set - browser memory pressure may be driving slowness or tab crashes."
                ));
            }
        }
    }
    if out.contains("=== WebView2 runtime ===\n- Installed: No")
        || (out.contains("=== WebView2 runtime ===")
            && out.contains("- Installed: No")
            && out.contains("- ProcessCount: 0"))
    {
        findings.push(
            "WebView2 runtime is missing - modern Windows apps that embed Edge web content may fail or render badly."
                .into(),
        );
    }
    for browser in ["Edge", "Chrome", "Firefox"] {
        let prefix = format!("{browser} | ProfileRoot:");
        if let Some(line) = out.lines().find(|line| line.contains(&prefix)) {
            let size_gb = line
                .split("| SizeGB: ")
                .nth(1)
                .and_then(|rest| rest.split(" |").next())
                .and_then(|value| value.trim().parse::<f64>().ok())
                .unwrap_or(0.0);
            let ext_count = line
                .split("| Extensions: ")
                .nth(1)
                .and_then(|value| value.trim().parse::<usize>().ok())
                .unwrap_or(0);
            if size_gb >= 2.5 {
                findings.push(format!(
                    "{browser} profile data is {size_gb:.2} GB - cache or profile bloat may be hurting startup and web-app responsiveness."
                ));
            }
            if ext_count >= 20 {
                findings.push(format!(
                    "{browser} has {ext_count} extensions in the default profile - extension overload can slow page loads and trigger conflicts."
                ));
            }
        }
    }
    if out.contains("Application Error |") || out.contains("Windows Error Reporting |") {
        findings.push(
            "Recent browser crash evidence was found in the Application log - review the failure lines below for the browser or helper process that is faulting."
                .into(),
        );
    }

    let mut result = String::from("Host inspection: browser_health\n\n=== Findings ===\n");
    if findings.is_empty() {
        result.push_str("- No obvious browser, proxy, or WebView2 health blocker detected.\n");
    } else {
        for finding in &findings {
            let _ = writeln!(result, "- Finding: {finding}");
        }
    }
    result.push('\n');
    result.push_str(&out);
    Ok(result)
}

#[cfg(not(windows))]
fn inspect_browser_health(_max_entries: usize) -> Result<String, String> {
    Ok("Host inspection: browser_health\n\n=== Findings ===\n- Browser health is currently Windows-first. Linux/macOS browser triage can be added later.\n".into())
}

#[cfg(windows)]
fn inspect_outlook(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("=== Outlook install inventory ===\n");

    let ps_install = r#"
$installPaths = @(
    (Join-Path $env:ProgramFiles 'Microsoft Office\root\Office16\OUTLOOK.EXE'),
    (Join-Path ${env:ProgramFiles(x86)} 'Microsoft Office\root\Office16\OUTLOOK.EXE'),
    (Join-Path $env:ProgramFiles 'Microsoft Office\Office16\OUTLOOK.EXE'),
    (Join-Path ${env:ProgramFiles(x86)} 'Microsoft Office\Office16\OUTLOOK.EXE'),
    (Join-Path $env:ProgramFiles 'Microsoft Office\Office15\OUTLOOK.EXE'),
    (Join-Path ${env:ProgramFiles(x86)} 'Microsoft Office\Office15\OUTLOOK.EXE')
)
$exe = $installPaths | Where-Object { $_ -and (Test-Path $_) } | Select-Object -First 1
if ($exe) {
    $version = try { (Get-Item $exe).VersionInfo.FileVersion } catch { 'Unknown' }
    $productName = try { (Get-Item $exe).VersionInfo.ProductName } catch { 'Unknown' }
    "Installed: Yes"
    "Executable: $exe"
    "Version: $version"
    "Product: $productName"
} else {
    "Installed: No"
}
$newOutlook = Get-AppxPackage -Name 'Microsoft.OutlookForWindows' -ErrorAction SilentlyContinue
if ($newOutlook) {
    "NewOutlook: Installed | Version: $($newOutlook.Version)"
} else {
    "NewOutlook: Not installed"
}
"#;
    match run_powershell(ps_install) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 4) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect Outlook install paths\n"),
    }

    out.push_str("\n=== Runtime state ===\n");
    let ps_runtime = r#"
$proc = Get-Process OUTLOOK -ErrorAction SilentlyContinue
if ($proc) {
    $count = @($proc).Count
    $wsMb = [Math]::Round((($proc | Measure-Object WorkingSet64 -Sum).Sum / 1MB), 1)
    $cpuPct = try { [Math]::Round(($proc | Measure-Object CPU -Sum).Sum, 1) } catch { 0 }
    "Running: Yes | ProcessCount: $count | WorkingSetMB: $wsMb | CPUSeconds: $cpuPct"
} else {
    "Running: No"
}
"#;
    match run_powershell(ps_runtime) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(4) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect Outlook runtime state\n"),
    }

    out.push_str("\n=== Mail profiles ===\n");
    let ps_profiles = r#"
$profileKey = 'HKCU:\Software\Microsoft\Office\16.0\Outlook\Profiles'
if (-not (Test-Path $profileKey)) {
    $profileKey = 'HKCU:\Software\Microsoft\Office\15.0\Outlook\Profiles'
}
if (Test-Path $profileKey) {
    $profiles = Get-ChildItem $profileKey -ErrorAction SilentlyContinue
    $count = @($profiles).Count
    "ProfileCount: $count"
    foreach ($p in $profiles | Select-Object -First 10) {
        "Profile: $($p.PSChildName)"
    }
} else {
    "ProfileCount: 0"
    "No Outlook profiles found in registry"
}
"#;
    match run_powershell(ps_profiles) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 2) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect Outlook mail profiles\n"),
    }

    out.push_str("\n=== OST and PST data files ===\n");
    let ps_datafiles = r#"
$searchRoots = @(
    (Join-Path $env:LOCALAPPDATA 'Microsoft\Outlook'),
    (Join-Path $env:USERPROFILE 'Documents'),
    (Join-Path $env:USERPROFILE 'OneDrive\Documents')
) | Where-Object { $_ -and (Test-Path $_) }
$files = foreach ($root in $searchRoots) {
    Get-ChildItem $root -Include '*.ost','*.pst' -Recurse -ErrorAction SilentlyContinue -Force |
        Select-Object FullName,
            @{N='SizeMB';E={[Math]::Round($_.Length/1MB,1)}},
            @{N='Type';E={$_.Extension.TrimStart('.').ToUpper()}},
            LastWriteTime
}
if ($files) {
    foreach ($f in ($files | Sort-Object SizeMB -Descending | Select-Object -First 12)) {
        "$($f.Type) | $($f.FullName) | SizeMB: $($f.SizeMB) | LastWrite: $($f.LastWriteTime.ToString('yyyy-MM-dd'))"
    }
} else {
    "No OST or PST files found in standard locations"
}
"#;
    match run_powershell(ps_datafiles) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 4) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect OST/PST data files\n"),
    }

    out.push_str("\n=== Add-in pressure ===\n");
    let ps_addins = r#"
$addinPaths = @(
    'HKLM:\SOFTWARE\Microsoft\Office\Outlook\Addins',
    'HKCU:\SOFTWARE\Microsoft\Office\Outlook\Addins',
    'HKLM:\SOFTWARE\WOW6432Node\Microsoft\Office\Outlook\Addins'
)
$addins = foreach ($path in $addinPaths) {
    if (Test-Path $path) {
        Get-ChildItem $path -ErrorAction SilentlyContinue | ForEach-Object {
            $item = Get-ItemProperty $_.PSPath -ErrorAction SilentlyContinue
            $loadBehavior = $item.LoadBehavior
            $desc = if ($item.Description) { $item.Description } else { $_.PSChildName }
            [PSCustomObject]@{ Name=$desc; LoadBehavior=$loadBehavior; Key=$_.PSChildName }
        }
    }
}
$enabledCount = ($addins | Where-Object { $_.LoadBehavior -band 1 }).Count
$disabledCount = ($addins | Where-Object { $_.LoadBehavior -eq 0 }).Count
"TotalAddins: $(@($addins).Count) | Active: $enabledCount | Disabled: $disabledCount"
foreach ($a in ($addins | Sort-Object LoadBehavior -Descending | Select-Object -First 15)) {
    $state = switch ($a.LoadBehavior) {
        0 { 'Disabled' }
        2 { 'LoadOnStart(inactive)' }
        3 { 'ActiveOnStart' }
        8 { 'DemandLoad' }
        9 { 'ActiveDemand' }
        16 { 'ConnectedFirst' }
        default { "LoadBehavior=$($a.LoadBehavior)" }
    }
    "$($a.Name) | $state"
}
$crashedKey = 'HKCU:\Software\Microsoft\Office\16.0\Outlook\Resiliency\DoNotDisableAddinList'
$disabledByResiliency = 'HKCU:\Software\Microsoft\Office\16.0\Outlook\Resiliency\DisabledItems'
if (Test-Path $disabledByResiliency) {
    $dis = Get-ItemProperty $disabledByResiliency -ErrorAction SilentlyContinue
    $count = ($dis.PSObject.Properties | Where-Object { $_.Name -notlike 'PS*' }).Count
    if ($count -gt 0) { "ResiliencyDisabledItems: $count (add-ins crashed and were auto-disabled)" }
}
"#;
    match run_powershell(ps_addins) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 8) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect Outlook add-ins\n"),
    }

    out.push_str("\n=== Authentication and cache friction ===\n");
    let ps_auth = r#"
$tokenCache = Join-Path $env:LOCALAPPDATA 'Microsoft\TokenBroker\Cache'
$tokenCount = if (Test-Path $tokenCache) {
    @(Get-ChildItem $tokenCache -File -ErrorAction SilentlyContinue).Count
} else { 0 }
"TokenBrokerCacheFiles: $tokenCount"
$credentialManager = cmdkey /list 2>&1 | Select-String 'MicrosoftOffice|ADALCache|microsoftoffice|MsoOpenIdConnect'
$credsCount = @($credentialManager).Count
"OfficeCredentialsInVault: $credsCount"
$samlKey = 'HKCU:\Software\Microsoft\Office\16.0\Common\Identity'
if (Test-Path $samlKey) {
    $id = Get-ItemProperty $samlKey -ErrorAction SilentlyContinue
    $connected = if ($id.ConnectedAccountWamOverride) { $id.ConnectedAccountWamOverride } else { 'Unknown' }
    $signedIn = if ($id.SignedInUserId) { $id.SignedInUserId } else { 'None' }
    "WAMOverride: $connected"
    "SignedInUserId: $signedIn"
}
$outlookReg = 'HKCU:\Software\Microsoft\Office\16.0\Outlook'
if (Test-Path $outlookReg) {
    $olk = Get-ItemProperty $outlookReg -ErrorAction SilentlyContinue
    if ($olk.DisableMAPI) { "DisableMAPI: $($olk.DisableMAPI)" }
}
"#;
    match run_powershell(ps_auth) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 4) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect Outlook auth state\n"),
    }

    out.push_str("\n=== Recent crash and event evidence (7d) ===\n");
    let ps_events = r#"
$cutoff = (Get-Date).AddDays(-7)
$events = Get-WinEvent -FilterHashtable @{ LogName='Application'; StartTime=$cutoff } -MaxEvents 500 -ErrorAction SilentlyContinue |
    Where-Object {
        $msg = [string]$_.Message
        ($_.ProviderName -eq 'Application Error' -or $_.ProviderName -eq 'Windows Error Reporting' -or $_.ProviderName -eq 'Outlook') -and
        ($msg.ToLower().Contains('outlook') -or $msg.ToLower().Contains('mso.dll') -or $msg.ToLower().Contains('outllib.dll') -or $msg.ToLower().Contains('olmapi32.dll'))
    } |
    Select-Object -First 8
if ($events) {
    foreach ($event in $events) {
        $msg = ($event.Message -replace '\s+', ' ')
        if ($msg.Length -gt 140) { $msg = $msg.Substring(0, 140) }
        "$($event.TimeCreated.ToString('MM-dd HH:mm')) | $($event.ProviderName) | EventId: $($event.Id) | $msg"
    }
} else {
    "No recent Outlook crash or error events detected in Application log"
}
"#;
    match run_powershell(ps_events) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 4) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect Outlook event log evidence\n"),
    }

    let mut findings: Vec<String> = Vec::with_capacity(4);

    if out.contains("- Installed: No") && out.contains("- NewOutlook: Not installed") {
        findings.push(
            "Outlook is not installed — neither classic Office nor the new Outlook for Windows was found."
                .into(),
        );
    }

    if let Some(line) = out.lines().find(|l| l.contains("WorkingSetMB:")) {
        let ws_mb = line
            .split("WorkingSetMB: ")
            .nth(1)
            .and_then(|r| r.split(" |").next())
            .and_then(|v| v.trim().parse::<f64>().ok())
            .unwrap_or(0.0);
        if ws_mb >= 1500.0 {
            findings.push(format!(
                "Outlook is consuming {ws_mb:.0} MB of RAM — add-in pressure, large OST files, or a corrupt profile may be driving memory growth."
            ));
        }
    }

    let large_ost: Vec<String> = out
        .lines()
        .filter(|l| l.contains("SizeMB:") && l.contains("OST"))
        .filter_map(|l| {
            let mb = l
                .split("SizeMB: ")
                .nth(1)
                .and_then(|r| r.split(" |").next())
                .and_then(|v| v.trim().parse::<f64>().ok())
                .unwrap_or(0.0);
            if mb >= 10_000.0 {
                Some(format!("{mb:.0} MB OST file detected"))
            } else {
                None
            }
        })
        .collect();
    for msg in large_ost {
        findings.push(format!(
            "{msg} — large OST files can cause Outlook slowness, send/receive delays, and search index rebuild time."
        ));
    }

    if let Some(line) = out.lines().find(|l| l.contains("TotalAddins:")) {
        let active_count = line
            .split("Active: ")
            .nth(1)
            .and_then(|r| r.split(" |").next())
            .and_then(|v| v.trim().parse::<usize>().ok())
            .unwrap_or(0);
        if active_count >= 8 {
            findings.push(format!(
                "{active_count} active Outlook add-ins detected — add-in overload is a common cause of slow Outlook startup, freezes, and crashes."
            ));
        }
    }

    if out.contains("ResiliencyDisabledItems:") {
        findings.push(
            "Outlook's crash resiliency has auto-disabled one or more add-ins — look at the ResiliencyDisabledItems count and remove the offending add-in."
                .into(),
        );
    }

    if out.contains("- ProfileCount: 0") || out.contains("- No Outlook profiles found") {
        findings.push(
            "No Outlook mail profiles were found in the registry — Outlook may not have been set up, or the profile may be corrupt."
                .into(),
        );
    }

    if out.contains("Application Error |") || out.contains("Windows Error Reporting |") {
        findings.push(
            "Recent Outlook crash evidence found in the Application event log — check the event lines below for the faulting module (mso.dll, outllib.dll, or an add-in DLL)."
                .into(),
        );
    }

    let mut result = String::from("Host inspection: outlook\n\n=== Findings ===\n");
    if findings.is_empty() {
        result.push_str("- No obvious Outlook health blocker detected.\n");
    } else {
        for finding in &findings {
            let _ = writeln!(result, "- Finding: {finding}");
        }
    }
    result.push('\n');
    result.push_str(&out);
    Ok(result)
}

#[cfg(not(windows))]
fn inspect_outlook(_max_entries: usize) -> Result<String, String> {
    Ok("Host inspection: outlook\n\n=== Findings ===\n- Outlook health inspection is Windows-only.\n".into())
}

#[cfg(windows)]
fn inspect_teams(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("=== Teams install inventory ===\n");

    let ps_install = r#"
# Classic Teams (Teams 1.0)
$classicExe = @(
    (Join-Path $env:LOCALAPPDATA 'Microsoft\Teams\current\Teams.exe'),
    (Join-Path $env:ProgramFiles 'Microsoft\Teams\current\Teams.exe')
) | Where-Object { $_ -and (Test-Path $_) } | Select-Object -First 1

if ($classicExe) {
    $ver = try { (Get-Item $classicExe).VersionInfo.FileVersion } catch { 'Unknown' }
    "ClassicTeams: Installed | Version: $ver | Path: $classicExe"
} else {
    "ClassicTeams: Not installed"
}

# New Teams (Teams 2.0 / ms-teams.exe)
$newTeamsExe = @(
    (Join-Path $env:LOCALAPPDATA 'Microsoft\WindowsApps\ms-teams.exe'),
    (Join-Path $env:ProgramFiles 'WindowsApps\MSTeams_*\ms-teams.exe')
) | Where-Object { $_ -and (Test-Path $_) } | Select-Object -First 1

$newTeamsPkg = Get-AppxPackage -Name 'MSTeams' -ErrorAction SilentlyContinue
if ($newTeamsPkg) {
    "NewTeams: Installed | Version: $($newTeamsPkg.Version) | PackageName: $($newTeamsPkg.PackageFullName)"
} elseif ($newTeamsExe) {
    $ver = try { (Get-Item $newTeamsExe).VersionInfo.FileVersion } catch { 'Unknown' }
    "NewTeams: Installed | Version: $ver | Path: $newTeamsExe"
} else {
    "NewTeams: Not installed"
}

# Teams Machine-Wide Installer (MSI/per-machine)
$mwi = Get-ItemProperty 'HKLM:\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*' -ErrorAction SilentlyContinue |
    Where-Object { $_.DisplayName -like 'Teams Machine-Wide Installer*' } |
    Select-Object -First 1
if ($mwi) {
    "MachineWideInstaller: Installed | Version: $($mwi.DisplayVersion)"
} else {
    "MachineWideInstaller: Not found"
}
"#;
    match run_powershell(ps_install) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 4) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect Teams install paths\n"),
    }

    out.push_str("\n=== Runtime state ===\n");
    let ps_runtime = r#"
$targets = @('Teams','ms-teams')
foreach ($name in $targets) {
    $procs = Get-Process -Name $name -ErrorAction SilentlyContinue
    if ($procs) {
        $count = @($procs).Count
        $wsMb = [Math]::Round((($procs | Measure-Object WorkingSet64 -Sum).Sum / 1MB), 1)
        "$name | Running: Yes | Processes: $count | WorkingSetMB: $wsMb"
    } else {
        "$name | Running: No"
    }
}
"#;
    match run_powershell(ps_runtime) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(6) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect Teams runtime state\n"),
    }

    out.push_str("\n=== Cache directory sizing ===\n");
    let ps_cache = r#"
$cachePaths = @(
    @{ Name='ClassicTeamsCache'; Path=(Join-Path $env:APPDATA 'Microsoft\Teams') },
    @{ Name='ClassicTeamsSquirrel'; Path=(Join-Path $env:LOCALAPPDATA 'Microsoft\Teams') },
    @{ Name='NewTeamsCache'; Path=(Join-Path $env:LOCALAPPDATA 'Packages\MSTeams_8wekyb3d8bbwe\LocalCache\Microsoft\MSTeams') },
    @{ Name='NewTeamsAppData'; Path=(Join-Path $env:LOCALAPPDATA 'Packages\MSTeams_8wekyb3d8bbwe') }
)
foreach ($entry in $cachePaths) {
    if (Test-Path $entry.Path) {
        $sizeBytes = (Get-ChildItem $entry.Path -Recurse -File -ErrorAction SilentlyContinue -Force | Measure-Object Length -Sum).Sum
        if (-not $sizeBytes) { $sizeBytes = 0 }
        $sizeMb = [Math]::Round($sizeBytes / 1MB, 1)
        "$($entry.Name) | Path: $($entry.Path) | SizeMB: $sizeMb"
    } else {
        "$($entry.Name) | Path: $($entry.Path) | Not found"
    }
}
"#;
    match run_powershell(ps_cache) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 4) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect Teams cache directories\n"),
    }

    out.push_str("\n=== WebView2 runtime ===\n");
    let ps_webview = r#"
$paths = @(
    (Join-Path ${env:ProgramFiles(x86)} 'Microsoft\EdgeWebView\Application'),
    (Join-Path $env:ProgramFiles 'Microsoft\EdgeWebView\Application')
) | Where-Object { $_ -and (Test-Path $_) }
$runtimeDir = $paths | ForEach-Object {
    Get-ChildItem $_ -Directory -ErrorAction SilentlyContinue |
        Where-Object { $_.Name -match '^\d+\.' } |
        Sort-Object Name -Descending |
        Select-Object -First 1
} | Select-Object -First 1
if ($runtimeDir) {
    $exe = Join-Path $runtimeDir.FullName 'msedgewebview2.exe'
    $version = if (Test-Path $exe) { try { (Get-Item $exe).VersionInfo.FileVersion } catch { $runtimeDir.Name } } else { $runtimeDir.Name }
    "Installed: Yes | Version: $version"
} else {
    "Installed: No -- New Teams and some Office features require WebView2"
}
"#;
    match run_powershell(ps_webview) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(4) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect WebView2 runtime\n"),
    }

    out.push_str("\n=== Account and sign-in state ===\n");
    let ps_auth = r#"
# Classic Teams account registry
$classicAcct = 'HKCU:\Software\Microsoft\Office\Teams'
if (Test-Path $classicAcct) {
    $item = Get-ItemProperty $classicAcct -ErrorAction SilentlyContinue
    $email = if ($item.HomeUserUpn) { $item.HomeUserUpn } elseif ($item.LoggedInEmail) { $item.LoggedInEmail } else { 'Unknown' }
    "ClassicTeamsAccount: $email"
} else {
    "ClassicTeamsAccount: Not configured"
}
# WAM / token broker state for Teams
$tokenCache = Join-Path $env:LOCALAPPDATA 'Microsoft\TokenBroker\Cache'
$tokenCount = if (Test-Path $tokenCache) {
    @(Get-ChildItem $tokenCache -File -ErrorAction SilentlyContinue).Count
} else { 0 }
"TokenBrokerCacheFiles: $tokenCount"
# Office identity
$officeId = 'HKCU:\Software\Microsoft\Office\16.0\Common\Identity'
if (Test-Path $officeId) {
    $id = Get-ItemProperty $officeId -ErrorAction SilentlyContinue
    $signedIn = if ($id.SignedInUserId) { $id.SignedInUserId } else { 'None' }
    "OfficeSignedInUserId: $signedIn"
}
# Check if Teams is in startup
$startupKey = 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Run'
$teamsRun = (Get-ItemProperty $startupKey -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'com.squirrel.Teams.Teams' -ErrorAction SilentlyContinue
"TeamsInStartup: $(if ($teamsRun) { 'Yes (Classic)' } else { 'Not in user run key' })"
"#;
    match run_powershell(ps_auth) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 4) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect Teams account state\n"),
    }

    out.push_str("\n=== Audio and video device binding ===\n");
    let ps_devices = r#"
# Teams stores device prefs in the settings file
$settingsPaths = @(
    (Join-Path $env:APPDATA 'Microsoft\Teams\desktop-config.json'),
    (Join-Path $env:LOCALAPPDATA 'Packages\MSTeams_8wekyb3d8bbwe\LocalCache\Microsoft\MSTeams\app_settings.json')
)
$found = $false
foreach ($sp in $settingsPaths) {
    if (Test-Path $sp) {
        $found = $true
        $raw = try { Get-Content $sp -Raw -ErrorAction SilentlyContinue } catch { $null }
        if ($raw) {
            $json = try { $raw | ConvertFrom-Json -ErrorAction SilentlyContinue } catch { $null }
            if ($json) {
                $mic = if ($json.currentAudioDevice) { $json.currentAudioDevice } elseif ($json.audioDevice) { $json.audioDevice } else { 'Default' }
                $spk = if ($json.currentSpeakerDevice) { $json.currentSpeakerDevice } elseif ($json.speakerDevice) { $json.speakerDevice } else { 'Default' }
                $cam = if ($json.currentVideoDevice) { $json.currentVideoDevice } elseif ($json.videoDevice) { $json.videoDevice } else { 'Default' }
                "ConfigFile: $sp"
                "Microphone: $mic"
                "Speaker: $spk"
                "Camera: $cam"
            } else {
                "ConfigFile: $sp (not parseable as JSON)"
            }
        } else {
            "ConfigFile: $sp (empty)"
        }
        break
    }
}
if (-not $found) {
    "NoTeamsConfigFile: Teams device prefs not found -- Teams may not have been launched yet or uses system defaults"
}
"#;
    match run_powershell(ps_devices) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 4) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect Teams device binding\n"),
    }

    out.push_str("\n=== Recent crash and event evidence (7d) ===\n");
    let ps_events = r#"
$cutoff = (Get-Date).AddDays(-7)
$events = Get-WinEvent -FilterHashtable @{ LogName='Application'; StartTime=$cutoff } -MaxEvents 500 -ErrorAction SilentlyContinue |
    Where-Object {
        $msg = [string]$_.Message
        ($_.ProviderName -eq 'Application Error' -or $_.ProviderName -eq 'Windows Error Reporting') -and
        ($msg.ToLower().Contains('teams') -or $msg.ToLower().Contains('ms-teams') -or $msg.ToLower().Contains('msteams'))
    } |
    Select-Object -First 8
if ($events) {
    foreach ($event in $events) {
        $msg = ($event.Message -replace '\s+', ' ')
        if ($msg.Length -gt 140) { $msg = $msg.Substring(0, 140) }
        "$($event.TimeCreated.ToString('MM-dd HH:mm')) | $($event.ProviderName) | EventId: $($event.Id) | $msg"
    }
} else {
    "No recent Teams crash or error events detected in Application log"
}
"#;
    match run_powershell(ps_events) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 4) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect Teams event log evidence\n"),
    }

    let mut findings: Vec<String> = Vec::with_capacity(4);

    let classic_installed = out.contains("- ClassicTeams: Installed");
    let new_installed = out.contains("- NewTeams: Installed");
    if !classic_installed && !new_installed {
        findings.push("Neither classic Teams nor new Teams is installed on this machine.".into());
    }

    for name in ["Teams", "ms-teams"] {
        let marker = format!("{name} | Running: Yes | Processes:");
        if let Some(line) = out.lines().find(|l| l.contains(&marker)) {
            let ws_mb = line
                .split("WorkingSetMB: ")
                .nth(1)
                .and_then(|v| v.trim().parse::<f64>().ok())
                .unwrap_or(0.0);
            if ws_mb >= 1000.0 {
                findings.push(format!(
                    "{name} is consuming {ws_mb:.0} MB of RAM — cache bloat or a large number of channels/meetings loaded may be driving memory growth."
                ));
            }
        }
    }

    for (label, threshold_mb) in [
        ("ClassicTeamsCache", 500.0_f64),
        ("ClassicTeamsSquirrel", 2000.0),
        ("NewTeamsCache", 500.0),
        ("NewTeamsAppData", 3000.0),
    ] {
        let marker = format!("{label} |");
        if let Some(line) = out.lines().find(|l| l.contains(&marker)) {
            let mb = line
                .split("SizeMB: ")
                .nth(1)
                .and_then(|v| v.trim().parse::<f64>().ok())
                .unwrap_or(0.0);
            if mb >= threshold_mb {
                findings.push(format!(
                    "{label} is {mb:.0} MB — cache bloat at this size can cause Teams slowness, failed sign-in, and rendering glitches. Fix: quit Teams and delete the cache folder."
                ));
            }
        }
    }

    if out.contains("- Installed: No -- New Teams") {
        findings.push(
            "WebView2 runtime is missing — new Teams requires WebView2 for rendering. Install it from Microsoft's WebView2 page or via winget install Microsoft.EdgeWebView2Runtime."
                .into(),
        );
    }

    if out.contains("- ClassicTeamsAccount: Not configured")
        && out.contains("- OfficeSignedInUserId: None")
    {
        findings.push(
            "No Teams account is configured and Office sign-in is absent — Teams will fail to load meetings or channels until the user signs in."
                .into(),
        );
    }

    if out.contains("Application Error |") || out.contains("Windows Error Reporting |") {
        findings.push(
            "Recent Teams crash evidence found in the Application event log — check the event lines below for the faulting module."
                .into(),
        );
    }

    let mut result = String::from("Host inspection: teams\n\n=== Findings ===\n");
    if findings.is_empty() {
        result.push_str("- No obvious Teams health blocker detected.\n");
    } else {
        for finding in &findings {
            let _ = writeln!(result, "- Finding: {finding}");
        }
    }
    result.push('\n');
    result.push_str(&out);
    Ok(result)
}

#[cfg(not(windows))]
fn inspect_teams(_max_entries: usize) -> Result<String, String> {
    Ok(
        "Host inspection: teams\n\n=== Findings ===\n- Teams health inspection is Windows-only.\n"
            .into(),
    )
}

#[cfg(windows)]
fn inspect_identity_auth(max_entries: usize) -> Result<String, String> {
    let mut out = String::from("=== Identity broker services ===\n");

    let ps_services = r#"
$serviceNames = 'TokenBroker','wlidsvc','OneAuth'
foreach ($name in $serviceNames) {
    $svc = Get-CimInstance Win32_Service -Filter "Name='$name'" -ErrorAction SilentlyContinue
    if ($svc) {
        "$($svc.Name) | Status: $($svc.State) | StartMode: $($svc.StartMode)"
    } else {
        "$name | Not found"
    }
}
"#;
    match run_powershell(ps_services) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect identity broker services\n"),
    }

    out.push_str("\n=== Device registration ===\n");
    let ps_device = r#"
$dsreg = Get-Command dsregcmd.exe -ErrorAction SilentlyContinue
if ($dsreg) {
    try {
        $raw = & $dsreg.Source /status 2>$null
        $text = ($raw -join "`n")
        $keys = 'AzureAdJoined','WorkplaceJoined','DomainJoined','DeviceAuthStatus','TenantName','AzureAdPrt','WamDefaultSet'
        $seen = $false
        foreach ($key in $keys) {
            $match = [regex]::Match($text, '(?im)^\s*' + [regex]::Escape($key) + '\s*:\s*(.+)$')
            if ($match.Success) {
                "${key}: $($match.Groups[1].Value.Trim())"
                $seen = $true
            }
        }
        if (-not $seen) {
            "DeviceRegistration: dsregcmd returned no recognizable registration fields (common on personal or unmanaged devices)"
        }
    } catch {
        "DeviceRegistration: dsregcmd failed - $($_.Exception.Message)"
    }
} else {
    "DeviceRegistration: dsregcmd unavailable"
}
"#;
    match run_powershell(ps_device) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 4) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str(
            "- DeviceRegistration: Could not inspect device registration state in this session\n",
        ),
    }

    out.push_str("\n=== Broker packages and caches ===\n");
    let ps_broker = r#"
$pkg = Get-AppxPackage -Name 'Microsoft.AAD.BrokerPlugin' -ErrorAction SilentlyContinue | Select-Object -First 1
if ($pkg) {
    "AADBrokerPlugin: Installed | Version: $($pkg.Version)"
} else {
    "AADBrokerPlugin: Not installed"
}
$tokenCache = Join-Path $env:LOCALAPPDATA 'Microsoft\TokenBroker\Cache'
$tokenCount = if (Test-Path $tokenCache) { @(Get-ChildItem $tokenCache -File -Recurse -ErrorAction SilentlyContinue).Count } else { 0 }
"TokenBrokerCacheFiles: $tokenCount"
$identityCache = Join-Path $env:LOCALAPPDATA 'Microsoft\IdentityCache'
$identityCount = if (Test-Path $identityCache) { @(Get-ChildItem $identityCache -File -Recurse -ErrorAction SilentlyContinue).Count } else { 0 }
"IdentityCacheFiles: $identityCount"
$oneAuth = Join-Path $env:LOCALAPPDATA 'Microsoft\OneAuth'
$oneAuthCount = if (Test-Path $oneAuth) { @(Get-ChildItem $oneAuth -File -Recurse -ErrorAction SilentlyContinue).Count } else { 0 }
"OneAuthFiles: $oneAuthCount"
"#;
    match run_powershell(ps_broker) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 4) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect identity broker packages or caches\n"),
    }

    out.push_str("\n=== Microsoft app account signals ===\n");
    let ps_accounts = r#"
function MaskEmail([string]$Email) {
    if ([string]::IsNullOrWhiteSpace($Email) -or $Email -notmatch '@') { return 'Unknown' }
    $parts = $Email.Split('@', 2)
    $local = $parts[0]
    $domain = $parts[1]
    if ($local.Length -le 1) { return "*@$domain" }
    return ($local.Substring(0,1) + "***@" + $domain)
}
$allAccounts = @()
$officeId = 'HKCU:\Software\Microsoft\Office\16.0\Common\Identity'
if (Test-Path $officeId) {
    $id = Get-ItemProperty $officeId -ErrorAction SilentlyContinue
    if ($id.SignedInUserId) {
        $allAccounts += [string]$id.SignedInUserId
        "OfficeSignedInUserId: $(MaskEmail ([string]$id.SignedInUserId))"
    } else {
        "OfficeSignedInUserId: None"
    }
} else {
    "OfficeSignedInUserId: Not configured"
}
$teamsAcct = 'HKCU:\Software\Microsoft\Office\Teams'
if (Test-Path $teamsAcct) {
    $item = Get-ItemProperty $teamsAcct -ErrorAction SilentlyContinue
    $email = if ($item.HomeUserUpn) { [string]$item.HomeUserUpn } elseif ($item.LoggedInEmail) { [string]$item.LoggedInEmail } else { '' }
    if (-not [string]::IsNullOrWhiteSpace($email)) {
        $allAccounts += $email
        "TeamsAccount: $(MaskEmail $email)"
    } else {
        "TeamsAccount: Unknown"
    }
} else {
    "TeamsAccount: Not configured"
}
$oneDriveBase = 'HKCU:\Software\Microsoft\OneDrive\Accounts'
$oneDriveEmails = @()
if (Test-Path $oneDriveBase) {
    $oneDriveEmails = Get-ChildItem $oneDriveBase -ErrorAction SilentlyContinue |
        ForEach-Object {
            $p = Get-ItemProperty $_.PSPath -ErrorAction SilentlyContinue
            if ($p.UserEmail) { [string]$p.UserEmail }
        } |
        Where-Object { -not [string]::IsNullOrWhiteSpace($_) } |
        Sort-Object -Unique
}
$allAccounts += $oneDriveEmails
"OneDriveAccountCount: $(@($oneDriveEmails).Count)"
if (@($oneDriveEmails).Count -gt 0) {
    "OneDriveAccounts: $((@($oneDriveEmails) | ForEach-Object { MaskEmail $_ }) -join ', ')"
}
$distinct = @($allAccounts | Where-Object { -not [string]::IsNullOrWhiteSpace($_) } | Sort-Object -Unique)
"DistinctIdentityCount: $($distinct.Count)"
if ($distinct.Count -gt 0) {
    "IdentitySet: $((@($distinct) | ForEach-Object { MaskEmail $_ }) -join ', ')"
}
"#;
    match run_powershell(ps_accounts) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 6) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect Microsoft app identity state\n"),
    }

    out.push_str("\n=== WebView2 auth dependency ===\n");
    let ps_webview = r#"
$paths = @(
    (Join-Path ${env:ProgramFiles(x86)} 'Microsoft\EdgeWebView\Application'),
    (Join-Path $env:ProgramFiles 'Microsoft\EdgeWebView\Application')
) | Where-Object { $_ -and (Test-Path $_) }
$runtimeDir = $paths | ForEach-Object {
    Get-ChildItem $_ -Directory -ErrorAction SilentlyContinue |
        Where-Object { $_.Name -match '^\d+\.' } |
        Sort-Object Name -Descending |
        Select-Object -First 1
} | Select-Object -First 1
if ($runtimeDir) {
    $exe = Join-Path $runtimeDir.FullName 'msedgewebview2.exe'
    $version = if (Test-Path $exe) { try { (Get-Item $exe).VersionInfo.FileVersion } catch { $runtimeDir.Name } } else { $runtimeDir.Name }
    "WebView2: Installed | Version: $version"
} else {
    "WebView2: Not installed"
}
"#;
    match run_powershell(ps_webview) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(4) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect WebView2 runtime\n"),
    }

    out.push_str("\n=== Recent auth-related events (24h) ===\n");
    let ps_events = r#"
try {
    $cutoff = (Get-Date).AddHours(-24)
    $events = @()
    if (Get-WinEvent -ListLog 'Microsoft-Windows-AAD/Operational' -ErrorAction SilentlyContinue) {
        $events += Get-WinEvent -FilterHashtable @{ LogName='Microsoft-Windows-AAD/Operational'; StartTime=$cutoff } -MaxEvents 30 -ErrorAction SilentlyContinue |
            Where-Object { $_.LevelDisplayName -in @('Error','Warning') } |
            Select-Object -First 4
    }
    $events += Get-WinEvent -FilterHashtable @{ LogName='Application'; StartTime=$cutoff } -MaxEvents 80 -ErrorAction SilentlyContinue |
        Where-Object {
            ($_.LevelDisplayName -in @('Error','Warning')) -and (
                $_.ProviderName -match 'Outlook|Teams|OneDrive|Office|AAD|TokenBroker|Broker'
                -or $_.Message -match 'Outlook|Teams|OneDrive|sign-?in|authentication|TokenBroker|BrokerPlugin|AAD'
            )
        } |
        Select-Object -First 6
    $events = $events | Sort-Object TimeCreated -Descending | Select-Object -First 8
    "AuthEventCount: $(@($events).Count)"
    if ($events) {
        foreach ($e in $events) {
            $msg = if ([string]::IsNullOrWhiteSpace([string]$e.Message)) {
                'No message'
            } else {
                ($e.Message -replace '\r','' -split '\n')[0] -replace '\|','/'
            }
            "$($e.TimeCreated.ToString('MM-dd HH:mm')) | Provider: $($e.ProviderName) | Level: $($e.LevelDisplayName) | Id: $($e.Id) | $msg"
        }
    } else {
        "No auth-related warning/error events detected"
    }
} catch {
    "AuthEventStatus: Could not inspect auth-related events - $($_.Exception.Message)"
}
"#;
    match run_powershell(ps_events) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries + 8) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out
            .push_str("- AuthEventStatus: Could not inspect auth-related events in this session\n"),
    }

    let parse_count = |prefix: &str| -> Option<u64> {
        out.lines().find_map(|line| {
            line.trim()
                .strip_prefix(prefix)
                .and_then(|value| value.trim().parse::<u64>().ok())
        })
    };

    let distinct_identity_count = parse_count("- DistinctIdentityCount: ").unwrap_or(0);
    let auth_event_count = parse_count("- AuthEventCount: ").unwrap_or(0);

    let mut findings: Vec<String> = Vec::with_capacity(4);
    if out.contains("TokenBroker | Status: Stopped")
        || out.contains("wlidsvc | Status: Stopped")
        || out.contains("OneAuth | Status: Stopped")
    {
        findings.push(
            "One or more Microsoft identity broker services are stopped - Outlook, Teams, OneDrive, or Microsoft 365 sign-in can loop or fail until WAM services are running."
                .into(),
        );
    }
    if out.contains("AADBrokerPlugin: Not installed") {
        findings.push(
            "Microsoft AAD Broker Plugin is missing - work/school account sign-in and token refresh can fail without the broker package."
                .into(),
        );
    }
    if out.contains("WebView2: Not installed") {
        findings.push(
            "WebView2 runtime is missing - modern Microsoft 365 sign-in surfaces may fail or render badly without it."
                .into(),
        );
    }
    if distinct_identity_count > 1 {
        findings.push(format!(
            "{distinct_identity_count} distinct Microsoft identity signals were detected across Office, Teams, and OneDrive - account mismatch can cause repeated sign-in prompts or the wrong tenant opening."
        ));
    }
    if (out.contains("AzureAdJoined: NO") || out.contains("WorkplaceJoined: NO"))
        && distinct_identity_count > 0
    {
        findings.push(
            "This machine shows Microsoft app identities but weak device-registration signals - organizational SSO, Conditional Access, or silent token refresh may be limited."
                .into(),
        );
    }
    if out.contains("DeviceRegistration: dsregcmd")
        || out.contains("DeviceRegistration: Could not inspect device registration state")
    {
        findings.push(
            "Device-registration visibility is partial in this session - personal devices are often fine here, but managed Microsoft 365 SSO posture may need dsregcmd details to confirm."
                .into(),
        );
    }
    if auth_event_count > 0 {
        findings.push(format!(
            "{auth_event_count} recent auth-related warning/error event(s) were found - the event section may explain repeated prompts, broker failures, or account-sync issues."
        ));
    } else if out.contains("AuthEventStatus: Could not inspect auth-related events") {
        findings.push(
            "Auth-related event visibility is partial in this session - the machine may still be healthy, but Hematite could not confirm recent broker or sign-in events."
                .into(),
        );
    }

    let mut result = String::from("Host inspection: identity_auth\n\n=== Findings ===\n");
    if findings.is_empty() {
        result.push_str("- No obvious Microsoft 365 identity broker, token cache, or device-registration blocker detected.\n");
    } else {
        for finding in &findings {
            let _ = writeln!(result, "- Finding: {finding}");
        }
    }
    result.push('\n');
    result.push_str(&out);
    Ok(result)
}

#[cfg(not(windows))]
fn inspect_identity_auth(_max_entries: usize) -> Result<String, String> {
    Ok("Host inspection: identity_auth\n\n=== Findings ===\n- Microsoft 365 identity-broker inspection is currently Windows-first. macOS/Linux support can be added later.\n".into())
}

#[cfg(windows)]
fn inspect_windows_backup(_max_entries: usize) -> Result<String, String> {
    let mut out = String::from("=== File History ===\n");

    let ps_fh = r#"
$svc = Get-Service fhsvc -ErrorAction SilentlyContinue
if ($svc) {
    "FileHistoryService: $($svc.Status) | StartType: $($svc.StartType)"
} else {
    "FileHistoryService: Not found"
}
# File History config in registry
$fhKey = 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SPP\UserPolicy\S-1-5-21*\d5c93fba*'
$fhUser = 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\FileHistory'
if (Test-Path $fhUser) {
    $fh = Get-ItemProperty $fhUser -ErrorAction SilentlyContinue
    $enabled = if ($fh.Enabled -eq 0) { 'Disabled' } elseif ($fh.Enabled -eq 1) { 'Enabled' } else { 'Unknown' }
    $target = if ($fh.TargetUrl) { $fh.TargetUrl } else { 'Not configured' }
    $lastBackup = if ($fh.ProtectedUpToTime) {
        try { [DateTime]::FromFileTime($fh.ProtectedUpToTime).ToString('yyyy-MM-dd HH:mm') } catch { 'Unknown' }
    } else { 'Never' }
    "Enabled: $enabled"
    "BackupDrive: $target"
    "LastBackup: $lastBackup"
} else {
    "Enabled: Not configured"
    "BackupDrive: Not configured"
    "LastBackup: Never"
}
"#;
    match run_powershell(ps_fh) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(6) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect File History state\n"),
    }

    out.push_str("\n=== Windows Backup (wbadmin) ===\n");
    let ps_wbadmin = r#"
$svc = Get-Service wbengine -ErrorAction SilentlyContinue
"WindowsBackupEngine: $(if ($svc) { "$($svc.Status) | StartType: $($svc.StartType)" } else { 'Not found' })"
# Last backup from wbadmin
$raw = try { wbadmin get versions 2>&1 | Select-Object -First 30 } catch { $null }
if ($raw -and ($raw -join ' ') -notmatch 'no backup') {
    $lastDate = ($raw | Select-String 'Backup time:' | Select-Object -First 1).Line
    $lastTarget = ($raw | Select-String 'Backup target:' | Select-Object -First 1).Line
    if ($lastDate) { $lastDate.Trim() }
    if ($lastTarget) { $lastTarget.Trim() }
} else {
    "LastWbadminBackup: No backup versions found"
}
# Task-based backup
$task = Get-ScheduledTask -TaskPath '\Microsoft\Windows\WindowsBackup\' -ErrorAction SilentlyContinue
foreach ($t in $task) {
    "BackupTask: $($t.TaskName) | State: $($t.State)"
}
"#;
    match run_powershell(ps_wbadmin) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(8) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect Windows Backup state\n"),
    }

    out.push_str("\n=== System Restore ===\n");
    let ps_sr = r#"
$drives = Get-WmiObject -Class Win32_LogicalDisk -Filter 'DriveType=3' -ErrorAction SilentlyContinue |
    Select-Object -ExpandProperty DeviceID
foreach ($drive in $drives) {
    $protection = try {
        (Get-ComputerRestorePoint -Drive "$drive\" -ErrorAction SilentlyContinue)
    } catch { $null }
    $srReg = "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SystemRestore"
    $rpConf = try {
        Get-ItemProperty "$srReg" -ErrorAction SilentlyContinue
    } catch { $null }
    # Check if SR is disabled for this drive
    $disabled = $false
    $vssService = Get-Service VSS -ErrorAction SilentlyContinue
    "Drive: $drive | VSSService: $(if ($vssService) { $vssService.Status } else { 'Not found' })"
}
# Most recent restore point
$points = try { Get-ComputerRestorePoint -ErrorAction SilentlyContinue } catch { $null }
if ($points) {
    $latest = $points | Sort-Object SequenceNumber -Descending | Select-Object -First 1
    $date = try { [Management.ManagementDateTimeConverter]::ToDateTime($latest.CreationTime).ToString('yyyy-MM-dd HH:mm') } catch { $latest.CreationTime }
    "MostRecentRestorePoint: $($latest.Description) | Created: $date"
} else {
    "MostRecentRestorePoint: None found"
}
$srEnabled = try {
    $regVal = (Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SystemRestore' -ErrorAction SilentlyContinue).RPSessionInterval
    if ($null -eq $regVal) { 'Enabled (default)' } elseif ($regVal -eq 0) { 'Disabled' } else { "Interval: $regVal" }
} catch { 'Unknown' }
"SystemRestoreState: $srEnabled"
"#;
    match run_powershell(ps_sr) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(8) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect System Restore state\n"),
    }

    out.push_str("\n=== OneDrive backup (Known Folder Move) ===\n");
    let ps_kfm = r#"
$kfmKey = 'HKCU:\SOFTWARE\Microsoft\OneDrive\Accounts'
if (Test-Path $kfmKey) {
    $accounts = Get-ChildItem $kfmKey -ErrorAction SilentlyContinue
    foreach ($acct in $accounts | Select-Object -First 3) {
        $props = Get-ItemProperty $acct.PSPath -ErrorAction SilentlyContinue
        $email = $props.UserEmail
        $kfmDesktop = $props.'KFMSilentOptInDesktop'
        $kfmDocs = $props.'KFMSilentOptInDocuments'
        $kfmPics = $props.'KFMSilentOptInPictures'
        "Account: $email | KFM-Desktop: $(if ($kfmDesktop) { 'Protected' } else { 'Not enrolled' }) | KFM-Docs: $(if ($kfmDocs) { 'Protected' } else { 'Not enrolled' }) | KFM-Pics: $(if ($kfmPics) { 'Protected' } else { 'Not enrolled' })"
    }
} else {
    "OneDriveKFM: No OneDrive accounts found"
}
"#;
    match run_powershell(ps_kfm) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(6) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect OneDrive Known Folder Move state\n"),
    }

    out.push_str("\n=== Recent backup failure events (7d) ===\n");
    let ps_events = r#"
$cutoff = (Get-Date).AddDays(-7)
$events = Get-WinEvent -FilterHashtable @{ LogName='Application'; StartTime=$cutoff } -MaxEvents 500 -ErrorAction SilentlyContinue |
    Where-Object {
        $_.ProviderName -match 'backup|FileHistory|wbengine|Microsoft-Windows-Backup' -or
        ($_.Id -in @(49,50,517,521) -and $_.LogName -eq 'Application')
    } |
    Where-Object { $_.Level -le 3 } |
    Select-Object -First 6
if ($events) {
    foreach ($event in $events) {
        $msg = ($event.Message -replace '\s+', ' ')
        if ($msg.Length -gt 140) { $msg = $msg.Substring(0, 140) }
        "$($event.TimeCreated.ToString('MM-dd HH:mm')) | $($event.ProviderName) | EventId: $($event.Id) | $msg"
    }
} else {
    "No recent backup failure events detected"
}
"#;
    match run_powershell(ps_events) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(8) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not inspect backup failure events\n"),
    }

    let mut findings: Vec<String> = Vec::with_capacity(4);

    let fh_enabled = out.contains("- Enabled: Enabled");
    let fh_never =
        out.contains("- LastBackup: Never") || out.contains("- LastBackup: Not configured");
    let no_wbadmin = out.contains("No backup versions found");
    let no_restore_point = out.contains("MostRecentRestorePoint: None found");

    if !fh_enabled && no_wbadmin {
        findings.push(
            "No backup solution detected — File History is not enabled and no Windows Backup versions were found. This machine has no local recovery path if data is lost or corrupted.".into(),
        );
    } else if fh_enabled && fh_never {
        findings.push(
            "File History is enabled but has never completed a backup — check that the backup drive is connected and accessible.".into(),
        );
    }

    if no_restore_point {
        findings.push(
            "No System Restore points exist — if a driver or update goes wrong there is no local rollback point available.".into(),
        );
    }

    if out.contains("- FileHistoryService: Stopped")
        || out.contains("- FileHistoryService: Not found")
    {
        findings.push(
            "File History service (fhsvc) is stopped or missing — File History backups cannot run until the service is started.".into(),
        );
    }

    if out.contains("Application Error |")
        || out.contains("Microsoft-Windows-Backup |")
        || out.contains("wbengine |")
    {
        findings.push(
            "Recent backup failure events found in the Application log — check the event lines below for the specific error.".into(),
        );
    }

    let mut result = String::from("Host inspection: windows_backup\n\n=== Findings ===\n");
    if findings.is_empty() {
        result.push_str("- No obvious backup health blocker detected.\n");
    } else {
        for finding in &findings {
            let _ = writeln!(result, "- Finding: {finding}");
        }
    }
    result.push('\n');
    result.push_str(&out);
    Ok(result)
}

#[cfg(not(windows))]
fn inspect_windows_backup(_max_entries: usize) -> Result<String, String> {
    Ok("Host inspection: windows_backup\n\n=== Findings ===\n- Windows Backup inspection is Windows-only.\n".into())
}

#[cfg(windows)]
fn inspect_search_index(_max_entries: usize) -> Result<String, String> {
    let mut out = String::from("=== Windows Search service ===\n");

    // Service state
    let ps_svc = r#"
$svc = Get-Service WSearch -ErrorAction SilentlyContinue
if ($svc) { "WSearch | Status: $($svc.Status) | StartType: $($svc.StartType)" }
else { "WSearch service not found" }
"#;
    match run_powershell(ps_svc) {
        Ok(o) => {
            let _ = writeln!(out, "- {}", o.trim());
        }
        Err(_) => out.push_str("- Could not query WSearch service\n"),
    }

    // Indexer state via registry
    out.push_str("\n=== Indexer state ===\n");
    let ps_idx = r#"
$key = 'HKLM:\SOFTWARE\Microsoft\Windows Search'
$props = Get-ItemProperty $key -ErrorAction SilentlyContinue
if ($props) {
    "SetupCompletedSuccessfully: $($props.SetupCompletedSuccessfully)"
    "IsContentIndexingEnabled: $($props.IsContentIndexingEnabled)"
    "DataDirectory: $($props.DataDirectory)"
} else { "Registry key not found" }
"#;
    match run_powershell(ps_idx) {
        Ok(o) => {
            for line in o.lines() {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        Err(_) => out.push_str("- Could not read indexer registry\n"),
    }

    // Indexed locations
    out.push_str("\n=== Indexed locations ===\n");
    let ps_locs = r#"
$comObj = New-Object -ComObject Microsoft.Search.Administration.CSearchManager -ErrorAction SilentlyContinue
if ($comObj) {
    $catalog = $comObj.GetCatalog('SystemIndex')
    $manager = $catalog.GetCrawlScopeManager()
    $rules = $manager.EnumerateRoots()
    while ($true) {
        try {
            $root = $rules.Next(1)
            if ($root.Count -eq 0) { break }
            $r = $root[0]
            "  $($r.RootURL) | Default: $($r.IsDefault) | Included: $($r.IsIncluded)"
        } catch { break }
    }
} else { "  COM admin interface not available (normal on non-admin sessions)" }
"#;
    match run_powershell(ps_locs) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines() {
                let l = line.trim_end();
                if !l.is_empty() {
                    let _ = writeln!(out, "{l}");
                }
            }
        }
        _ => {
            // Fallback: read from registry
            let ps_reg = r#"
Get-ChildItem 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Search\Indexer\Sources' -ErrorAction SilentlyContinue |
ForEach-Object { "  $($_.PSChildName)" } | Select-Object -First 20
"#;
            match run_powershell(ps_reg) {
                Ok(o) if !o.trim().is_empty() => {
                    for line in o.lines() {
                        let l = line.trim_end();
                        if !l.is_empty() {
                            let _ = writeln!(out, "{l}");
                        }
                    }
                }
                _ => out.push_str("  - Could not enumerate indexed locations\n"),
            }
        }
    }

    // Recent indexing errors from event log
    out.push_str("\n=== Recent indexer errors (last 24h) ===\n");
    let ps_evts = r#"
Get-WinEvent -LogName 'Microsoft-Windows-Search/Operational' -MaxEvents 5 -ErrorAction SilentlyContinue |
Where-Object { $_.LevelDisplayName -eq 'Error' -or $_.LevelDisplayName -eq 'Warning' } |
ForEach-Object { "$($_.TimeCreated.ToString('HH:mm')) [$($_.LevelDisplayName)] $($_.Message.Substring(0, [Math]::Min(120, $_.Message.Length)))" }
"#;
    match run_powershell(ps_evts) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines() {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- No recent indexer errors found\n"),
    }

    let mut findings: Vec<String> = Vec::with_capacity(4);
    if out.contains("Status: Stopped") {
        findings.push("Windows Search (WSearch) is stopped — search results will be slow or empty. Start the service: `Start-Service WSearch`.".into());
    }
    if out.contains("IsContentIndexingEnabled: 0")
        || out.contains("IsContentIndexingEnabled: False")
    {
        findings.push(
            "Content indexing is disabled — file content won't be searchable, only filenames."
                .into(),
        );
    }
    if out.contains("SetupCompletedSuccessfully: 0")
        || out.contains("SetupCompletedSuccessfully: False")
    {
        findings.push("Search indexer setup did not complete successfully — index may be corrupt. Rebuild: Settings > Search > Searching Windows > Advanced > Rebuild.".into());
    }

    let mut result = String::from("Host inspection: search_index\n\n=== Findings ===\n");
    if findings.is_empty() {
        result.push_str("- Windows Search service and indexer appear healthy.\n");
        result.push_str("  If search still feels slow, the index may just be catching up — check indexing status in Settings > Search > Searching Windows.\n");
    } else {
        for f in &findings {
            let _ = writeln!(result, "- Finding: {f}");
        }
    }
    result.push('\n');
    result.push_str(&out);
    Ok(result)
}

#[cfg(not(windows))]
fn inspect_search_index(_max_entries: usize) -> Result<String, String> {
    Ok("Host inspection: search_index\nSearch index inspection is Windows-only.".into())
}

// ── inspect_display_config ────────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_display_config(max_entries: usize) -> Result<String, String> {
    let mut out = String::with_capacity(1024);

    // Active displays via CIM
    out.push_str("=== Active displays ===\n");
    let ps_displays = r#"
Get-CimInstance -ClassName CIM_VideoControllerResolution -ErrorAction SilentlyContinue |
Select-Object -First 20 |
ForEach-Object {
    "$($_.HorizontalResolution)x$($_.VerticalResolution) @ $($_.RefreshRate)Hz | Colors: $($_.NumberOfColors)"
}
"#;
    match run_powershell(ps_displays) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not enumerate display resolutions via CIM\n"),
    }

    // GPU / video adapter
    out.push_str("\n=== Video adapters ===\n");
    let ps_gpu = r#"
Get-CimInstance Win32_VideoController -ErrorAction SilentlyContinue | Select-Object -First 4 |
ForEach-Object {
    $res = "$($_.CurrentHorizontalResolution)x$($_.CurrentVerticalResolution)"
    $hz  = "$($_.CurrentRefreshRate) Hz"
    $bits = "$($_.CurrentBitsPerPixel) bpp"
    "$($_.Name) | $res @ $hz | $bits | Driver: $($_.DriverVersion)"
}
"#;
    match run_powershell(ps_gpu) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not query video adapter info\n"),
    }

    // Monitor names via Win32_DesktopMonitor
    out.push_str("\n=== Connected monitors ===\n");
    let ps_monitors = r#"
Get-CimInstance Win32_DesktopMonitor -ErrorAction SilentlyContinue | Select-Object -First 8 |
ForEach-Object { "$($_.Name) | Status: $($_.Status) | PnP: $($_.PNPDeviceID)" }
"#;
    match run_powershell(ps_monitors) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines().take(max_entries) {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- No monitor info available via WMI\n"),
    }

    // DPI scaling
    out.push_str("\n=== DPI / scaling ===\n");
    let ps_dpi = r#"
Add-Type -TypeDefinition @'
using System; using System.Runtime.InteropServices;
public class DPI {
    [DllImport("user32")] public static extern IntPtr GetDC(IntPtr hwnd);
    [DllImport("gdi32")]  public static extern int GetDeviceCaps(IntPtr hdc, int nIndex);
    [DllImport("user32")] public static extern int ReleaseDC(IntPtr hwnd, IntPtr hdc);
}
'@ -ErrorAction SilentlyContinue
try {
    $hdc  = [DPI]::GetDC([IntPtr]::Zero)
    $dpiX = [DPI]::GetDeviceCaps($hdc, 88)
    $dpiY = [DPI]::GetDeviceCaps($hdc, 90)
    [DPI]::ReleaseDC([IntPtr]::Zero, $hdc) | Out-Null
    $scale = [Math]::Round($dpiX / 96.0 * 100)
    "DPI: ${dpiX}x${dpiY} | Scale: ${scale}%"
} catch { "DPI query unavailable" }
"#;
    match run_powershell(ps_dpi) {
        Ok(o) if !o.trim().is_empty() => {
            let _ = writeln!(out, "- {}", o.trim());
        }
        _ => out.push_str("- DPI info unavailable\n"),
    }

    let mut findings: Vec<String> = Vec::with_capacity(4);
    if out.contains("0x0") || out.contains("@ 0 Hz") {
        findings.push("One or more adapters report zero resolution or refresh rate — display may be asleep or misconfigured.".into());
    }

    let mut result = String::from("Host inspection: display_config\n\n=== Findings ===\n");
    if findings.is_empty() {
        result.push_str("- Display configuration appears normal.\n");
    } else {
        for f in &findings {
            let _ = writeln!(result, "- Finding: {f}");
        }
    }
    result.push('\n');
    result.push_str(&out);
    Ok(result)
}

#[cfg(not(windows))]
fn inspect_display_config(_max_entries: usize) -> Result<String, String> {
    Ok("Host inspection: display_config\nDisplay config inspection is Windows-only.".into())
}

// ── inspect_ntp ───────────────────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_ntp() -> Result<String, String> {
    let mut out = String::with_capacity(1024);

    // w32tm status
    out.push_str("=== Windows Time service ===\n");
    let ps_svc = r#"
$svc = Get-Service W32Time -ErrorAction SilentlyContinue
if ($svc) { "W32Time | Status: $($svc.Status) | StartType: $($svc.StartType)" }
else { "W32Time service not found" }
"#;
    match run_powershell(ps_svc) {
        Ok(o) => {
            let _ = writeln!(out, "- {}", o.trim());
        }
        Err(_) => out.push_str("- Could not query W32Time service\n"),
    }

    // NTP source and last sync
    out.push_str("\n=== NTP source and sync status ===\n");
    let ps_sync = r#"
$q = w32tm /query /status 2>$null
if ($q) { $q } else { "w32tm query unavailable" }
"#;
    match run_powershell(ps_sync) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines() {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "  {l}");
                }
            }
        }
        _ => out.push_str("  - Could not query w32tm status\n"),
    }

    // Configured NTP server
    out.push_str("\n=== Configured NTP servers ===\n");
    let ps_peers = r#"
w32tm /query /peers 2>$null | Select-Object -First 10
"#;
    match run_powershell(ps_peers) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines() {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "  {l}");
                }
            }
        }
        _ => {
            // Fallback: registry
            let ps_reg = r#"
(Get-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Services\W32Time\Parameters' -Name NtpServer -ErrorAction SilentlyContinue).NtpServer
"#;
            match run_powershell(ps_reg) {
                Ok(o) if !o.trim().is_empty() => {
                    let _ = writeln!(out, "  NtpServer (registry): {}", o.trim());
                }
                _ => out.push_str("  - Could not enumerate NTP peers\n"),
            }
        }
    }

    let mut findings: Vec<String> = Vec::with_capacity(4);
    if out.contains("W32Time | Status: Stopped") {
        findings.push("Windows Time service is stopped — system clock will drift and may cause authentication or certificate failures. Start with: `Start-Service W32Time`.".into());
    }
    if out.contains("The computer did not resync") || out.contains("Error") {
        findings.push("w32tm reports a sync error — check NTP server reachability or run `w32tm /resync /force`.".into());
    }

    let mut result = String::from("Host inspection: ntp\n\n=== Findings ===\n");
    if findings.is_empty() {
        result.push_str("- Windows Time service and NTP sync appear healthy.\n");
    } else {
        for f in &findings {
            let _ = writeln!(result, "- Finding: {f}");
        }
    }
    result.push('\n');
    result.push_str(&out);
    Ok(result)
}

#[cfg(not(windows))]
fn inspect_ntp() -> Result<String, String> {
    // Linux/macOS: check timedatectl / chrony / ntpq
    let mut out = String::from("Host inspection: ntp\n\n=== Findings ===\n");

    let timedatectl = std::process::Command::new("timedatectl")
        .arg("status")
        .output();

    if let Ok(o) = timedatectl {
        let text = String::from_utf8_lossy(&o.stdout);
        if text.contains("synchronized: yes") || text.contains("NTP synchronized: yes") {
            out.push_str("- NTP synchronized: yes\n\n=== timedatectl status ===\n");
        } else {
            out.push_str("- Finding: NTP not synchronized — run `timedatectl set-ntp true`\n\n=== timedatectl status ===\n");
        }
        for line in text.lines() {
            let l = line.trim();
            if !l.is_empty() {
                let _ = write!(out, "  {l}\n");
            }
        }
        return Ok(out);
    }

    // macOS fallback
    let sntp = std::process::Command::new("sntp")
        .args(["-d", "time.apple.com"])
        .output();
    if let Ok(o) = sntp {
        out.push_str("- NTP check via sntp:\n");
        out.push_str(&String::from_utf8_lossy(&o.stdout));
        return Ok(out);
    }

    out.push_str("- NTP status unavailable (no timedatectl or sntp found)\n");
    Ok(out)
}

// ── inspect_cpu_power ─────────────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_cpu_power() -> Result<String, String> {
    let mut out = String::with_capacity(1024);

    // Active power plan
    out.push_str("=== Active power plan ===\n");
    let ps_plan = r#"
$plan = powercfg /getactivescheme 2>$null
if ($plan) { $plan } else { "Could not query power scheme" }
"#;
    match run_powershell(ps_plan) {
        Ok(o) if !o.trim().is_empty() => {
            let _ = writeln!(out, "- {}", o.trim());
        }
        _ => out.push_str("- Could not read active power plan\n"),
    }

    // Processor min/max state and boost policy
    out.push_str("\n=== Processor performance policy ===\n");
    let ps_proc = r#"
$active = (powercfg /getactivescheme) -replace '.*GUID: ([a-f0-9-]+).*','$1'
$min = powercfg /query $active SUB_PROCESSOR PROCTHROTTLEMIN 2>$null | Where-Object { $_ -match 'Current AC Power Setting Index' }
$max = powercfg /query $active SUB_PROCESSOR PROCTHROTTLEMAX 2>$null | Where-Object { $_ -match 'Current AC Power Setting Index' }
$boost = powercfg /query $active SUB_PROCESSOR PERFBOOSTMODE 2>$null | Where-Object { $_ -match 'Current AC Power Setting Index' }
if ($min)   { "Min processor state:  $(([Convert]::ToInt32(($min -split '0x')[1],16)))%" }
if ($max)   { "Max processor state:  $(([Convert]::ToInt32(($max -split '0x')[1],16)))%" }
if ($boost) {
    $bval = [Convert]::ToInt32(($boost -split '0x')[1],16)
    $bname = switch ($bval) { 0{'Disabled'} 1{'Enabled'} 2{'Aggressive'} 3{'Efficient Enabled'} 4{'Efficient Aggressive'} default{"Unknown ($bval)"} }
    "Turbo boost mode:     $bname"
}
"#;
    match run_powershell(ps_proc) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines() {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not query processor performance settings\n"),
    }

    // Current CPU frequency via WMI
    out.push_str("\n=== CPU frequency ===\n");
    let ps_freq = r#"
Get-CimInstance Win32_Processor -ErrorAction SilentlyContinue | Select-Object -First 4 |
ForEach-Object {
    $cur = $_.CurrentClockSpeed
    $max = $_.MaxClockSpeed
    $load = $_.LoadPercentage
    "$($_.Name.Trim()) | Current: ${cur} MHz | Max: ${max} MHz | Load: ${load}%"
}
"#;
    match run_powershell(ps_freq) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines() {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Could not query CPU frequency via WMI\n"),
    }

    // Throttle reason from ETW (quick check)
    out.push_str("\n=== Throttling indicators ===\n");
    let ps_throttle = r#"
$pwr = Get-CimInstance -Namespace root\wmi -ClassName MSAcpi_ThermalZoneTemperature -ErrorAction SilentlyContinue
if ($pwr) {
    $pwr | Select-Object -First 4 | ForEach-Object {
        $c = [Math]::Round(($_.CurrentTemperature / 10.0) - 273.15, 1)
        "Thermal zone $($_.InstanceName): ${c}°C"
    }
} else { "Thermal zone WMI not available (normal on consumer hardware)" }
"#;
    match run_powershell(ps_throttle) {
        Ok(o) if !o.trim().is_empty() => {
            for line in o.lines() {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        _ => out.push_str("- Thermal zone info unavailable\n"),
    }

    let mut findings: Vec<String> = Vec::with_capacity(4);
    if out.contains("Max processor state:  0%") || out.contains("Max processor state:  1%") {
        findings.push("Max processor state is near 0% — CPU is being hard-capped by the power plan. Check power plan settings.".into());
    }
    if out.contains("Turbo boost mode:     Disabled") {
        findings.push("Turbo Boost is disabled in the active power plan — CPU cannot exceed base clock speed.".into());
    }
    if out.contains("Min processor state:  100%") {
        findings.push("Min processor state is 100% — CPU is pinned at max clock. Good for performance, increases power/heat.".into());
    }

    let mut result = String::from("Host inspection: cpu_power\n\n=== Findings ===\n");
    if findings.is_empty() {
        result.push_str("- CPU power and frequency settings appear normal.\n");
    } else {
        for f in &findings {
            let _ = writeln!(result, "- Finding: {f}");
        }
    }
    result.push('\n');
    result.push_str(&out);
    Ok(result)
}

#[cfg(windows)]
fn inspect_credentials(_max_entries: usize) -> Result<String, String> {
    let mut out = String::with_capacity(1024);

    out.push_str("=== Credential vault summary ===\n");
    let ps_summary = r#"
$raw = cmdkey /list 2>&1
$lines = $raw -split "`n"
$total = ($lines | Where-Object { $_ -match "Target:" }).Count
"Total stored credentials: $total"
$windows = ($lines | Where-Object { $_ -match "Type: Windows" }).Count
$generic = ($lines | Where-Object { $_ -match "Type: Generic" }).Count
$cert    = ($lines | Where-Object { $_ -match "Type: Certificate" }).Count
"  Windows credentials: $windows"
"  Generic credentials: $generic"
"  Certificate-based:   $cert"
"#;
    match run_powershell(ps_summary) {
        Ok(o) => {
            for line in o.lines() {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        Err(e) => {
            let _ = writeln!(out, "- Credential summary error: {e}");
        }
    }

    out.push_str("\n=== Credential targets (up to 20) ===\n");
    let ps_list = r#"
$raw = cmdkey /list 2>&1
$entries = @(); $cur = @{}
foreach ($line in ($raw -split "`n")) {
    $l = $line.Trim()
    if     ($l -match "^Target:\s*(.+)")  { $cur = @{ Target=$Matches[1] } }
    elseif ($l -match "^Type:\s*(.+)"   -and $cur.Target) { $cur.Type=$Matches[1] }
    elseif ($l -match "^User:\s*(.+)"   -and $cur.Target) { $cur.User=$Matches[1]; $entries+=$cur; $cur=@{} }
}
$entries | Select-Object -Last 20 | ForEach-Object {
    "[$($_.Type)] $($_.Target)  (user: $($_.User))"
}
"#;
    match run_powershell(ps_list) {
        Ok(o) => {
            let lines: Vec<&str> = o
                .lines()
                .map(|l| l.trim())
                .filter(|l| !l.is_empty())
                .collect();
            if lines.is_empty() {
                out.push_str("- No credential entries found\n");
            } else {
                for l in &lines {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        Err(e) => {
            let _ = writeln!(out, "- Credential list error: {e}");
        }
    }

    let total_creds: usize = {
        let ps_count = r#"(cmdkey /list 2>&1 | Select-String "Target:").Count"#;
        run_powershell(ps_count)
            .ok()
            .and_then(|s| s.trim().parse().ok())
            .unwrap_or(0)
    };

    let mut findings: Vec<String> = Vec::with_capacity(4);
    if total_creds > 30 {
        findings.push(format!(
            "{total_creds} stored credentials found — consider auditing for stale entries."
        ));
    }

    let mut result = String::from("Host inspection: credentials\n\n=== Findings ===\n");
    if findings.is_empty() {
        result.push_str("- Credential store looks normal.\n");
    } else {
        for f in &findings {
            let _ = writeln!(result, "- Finding: {f}");
        }
    }
    result.push('\n');
    result.push_str(&out);
    Ok(result)
}

#[cfg(not(windows))]
fn inspect_credentials(_max_entries: usize) -> Result<String, String> {
    Ok("Host inspection: credentials\n\n=== Findings ===\n- Credential Manager is Windows-only. Use `secret-tool` or `pass` on Linux.\n".into())
}

#[cfg(windows)]
fn inspect_tpm() -> Result<String, String> {
    let mut out = String::with_capacity(1024);

    out.push_str("=== TPM state ===\n");
    let ps_tpm = r#"
function Emit-Field([string]$Name, $Value, [string]$Fallback = "Unknown") {
    $text = if ($null -eq $Value) { "" } else { [string]$Value }
    if ([string]::IsNullOrWhiteSpace($text)) { $text = $Fallback }
    "$Name$text"
}
$t = Get-Tpm -ErrorAction SilentlyContinue
if ($t) {
    Emit-Field "TpmPresent:          " $t.TpmPresent
    Emit-Field "TpmReady:            " $t.TpmReady
    Emit-Field "TpmEnabled:          " $t.TpmEnabled
    Emit-Field "TpmOwned:            " $t.TpmOwned
    Emit-Field "RestartPending:      " $t.RestartPending
    Emit-Field "ManufacturerIdTxt:   " $t.ManufacturerIdTxt
    Emit-Field "ManufacturerVersion: " $t.ManufacturerVersion
} else { "TPM module unavailable" }
"#;
    match run_powershell(ps_tpm) {
        Ok(o) => {
            for line in o.lines() {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        Err(e) => {
            let _ = writeln!(out, "- Get-Tpm error: {e}");
        }
    }

    out.push_str("\n=== TPM spec version (WMI) ===\n");
    let ps_spec = r#"
$wmi = Get-CimInstance -Namespace root\cimv2\security\microsofttpm -ClassName Win32_Tpm -ErrorAction SilentlyContinue
if ($wmi) {
    $spec = if ([string]::IsNullOrWhiteSpace([string]$wmi.SpecVersion)) { "Unknown" } else { [string]$wmi.SpecVersion }
    "SpecVersion:  $spec"
    "IsActivated:  $(if ($null -eq $wmi.IsActivated_InitialValue) { 'Unknown' } else { $wmi.IsActivated_InitialValue })"
    "IsEnabled:    $(if ($null -eq $wmi.IsEnabled_InitialValue) { 'Unknown' } else { $wmi.IsEnabled_InitialValue })"
    "IsOwned:      $(if ($null -eq $wmi.IsOwned_InitialValue) { 'Unknown' } else { $wmi.IsOwned_InitialValue })"
} else { "Win32_Tpm WMI class unavailable (may need elevation or no TPM)" }
"#;
    match run_powershell(ps_spec) {
        Ok(o) => {
            for line in o.lines() {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        Err(e) => {
            let _ = writeln!(out, "- Win32_Tpm WMI error: {e}");
        }
    }

    out.push_str("\n=== Secure Boot state ===\n");
    let ps_sb = r#"
try {
    $sb = Confirm-SecureBootUEFI -ErrorAction Stop
    if ($sb) { "Secure Boot: ENABLED" } else { "Secure Boot: DISABLED" }
} catch {
    $msg = $_.Exception.Message
    if ($msg -match "Access was denied" -or $msg -match "proper privileges") {
        "Secure Boot: Unknown (administrator privileges required)"
    } elseif ($msg -match "Cmdlet not supported on this platform") {
        "Secure Boot: N/A (Legacy BIOS or unsupported firmware)"
    } else {
        "Secure Boot: N/A ($msg)"
    }
}
"#;
    match run_powershell(ps_sb) {
        Ok(o) => {
            for line in o.lines() {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        Err(e) => {
            let _ = writeln!(out, "- Secure Boot check error: {e}");
        }
    }

    out.push_str("\n=== Firmware type ===\n");
    let ps_fw = r#"
$fw = (Get-ItemProperty HKLM:\SYSTEM\CurrentControlSet\Control -Name "PEFirmwareType" -ErrorAction SilentlyContinue).PEFirmwareType
switch ($fw) {
    1 { "Firmware type: BIOS (Legacy)" }
    2 { "Firmware type: UEFI" }
    default {
        $bcd = bcdedit /enum firmware 2>$null
        if ($LASTEXITCODE -eq 0 -and $bcd) { "Firmware type: UEFI (bcdedit fallback)" }
        else { "Firmware type: Unknown or not set" }
    }
}
"#;
    match run_powershell(ps_fw) {
        Ok(o) => {
            for line in o.lines() {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        Err(e) => {
            let _ = writeln!(out, "- Firmware type error: {e}");
        }
    }

    let mut findings: Vec<String> = Vec::with_capacity(4);
    let mut indeterminate = false;
    if out.contains("TpmPresent:          False") {
        findings.push("No TPM detected — BitLocker hardware encryption and Windows 11 security features unavailable.".into());
    }
    if out.contains("TpmReady:            False") {
        findings.push(
            "TPM present but not ready — may need initialization in BIOS/UEFI settings.".into(),
        );
    }
    if out.contains("SpecVersion:  1.2") {
        findings.push("TPM 1.2 detected — Windows 11 requires TPM 2.0.".into());
    }
    if out.contains("Secure Boot: DISABLED") {
        findings.push("Secure Boot is disabled — recommended to enable in UEFI firmware for Windows 11 compliance.".into());
    }
    if out.contains("Firmware type: BIOS (Legacy)") {
        findings.push(
            "Legacy BIOS detected — Secure Boot and modern TPM require UEFI firmware.".into(),
        );
    }

    if out.contains("TPM module unavailable")
        || out.contains("Win32_Tpm WMI class unavailable")
        || out.contains("Secure Boot: N/A")
        || out.contains("Secure Boot: Unknown")
        || out.contains("Firmware type: Unknown or not set")
        || out.contains("TpmPresent:          Unknown")
        || out.contains("TpmReady:            Unknown")
        || out.contains("TpmEnabled:          Unknown")
    {
        indeterminate = true;
    }
    if indeterminate {
        findings.push(
            "TPM / Secure Boot state could not be fully determined from this session - firmware mode, privileges, or Windows TPM providers may be limiting visibility."
                .into(),
        );
    }

    let mut result = String::from("Host inspection: tpm\n\n=== Findings ===\n");
    if findings.is_empty() {
        result.push_str("- TPM and Secure Boot appear healthy.\n");
    } else {
        for f in &findings {
            let _ = writeln!(result, "- Finding: {f}");
        }
    }
    result.push('\n');
    result.push_str(&out);
    Ok(result)
}

#[cfg(not(windows))]
fn inspect_tpm() -> Result<String, String> {
    Ok(
        "Host inspection: tpm\n\n=== Findings ===\n- TPM/Secure Boot inspection is Windows-only.\n"
            .into(),
    )
}

#[cfg(windows)]
fn inspect_latency() -> Result<String, String> {
    let mut out = String::with_capacity(1024);

    // Resolve default gateway from the routing table
    let ps_gw = r#"
$gw = (Get-NetRoute -DestinationPrefix "0.0.0.0/0" -ErrorAction SilentlyContinue |
       Sort-Object RouteMetric | Select-Object -First 1).NextHop
if ($gw) { $gw } else { "" }
"#;
    let gateway = run_powershell(ps_gw)
        .ok()
        .map(|s| s.trim().to_string())
        .filter(|s| !s.is_empty());

    let targets: Vec<(&str, String)> = {
        let mut t = Vec::with_capacity(3);
        if let Some(ref gw) = gateway {
            t.push(("Default gateway", gw.clone()));
        }
        t.push(("Cloudflare DNS", "1.1.1.1".into()));
        t.push(("Google DNS", "8.8.8.8".into()));
        t
    };

    let mut findings: Vec<String> = Vec::with_capacity(4);

    for (label, host) in &targets {
        let _ = write!(out, "\n=== Ping: {label} ({host}) ===\n");
        // Test-NetConnection gives RTT; -InformationLevel Quiet just returns bool, so use ping
        let ps_ping = format!(
            r#"
$r = Test-Connection -ComputerName "{host}" -Count 4 -ErrorAction SilentlyContinue
if ($r) {{
    $rtts = $r | ForEach-Object {{ $_.ResponseTime }}
    $min  = ($rtts | Measure-Object -Minimum).Minimum
    $max  = ($rtts | Measure-Object -Maximum).Maximum
    $avg  = [Math]::Round(($rtts | Measure-Object -Average).Average, 1)
    $loss = [Math]::Round((4 - $r.Count) / 4 * 100)
    "RTT min/avg/max: ${{min}}ms / ${{avg}}ms / ${{max}}ms"
    "Packet loss: ${{loss}}%"
    "Sent: 4  Received: $($r.Count)"
}} else {{
    "UNREACHABLE — 100% packet loss"
}}
"#
        );
        match run_powershell(&ps_ping) {
            Ok(o) => {
                let body = o.trim().to_string();
                for line in body.lines() {
                    let l = line.trim();
                    if !l.is_empty() {
                        let _ = writeln!(out, "- {l}");
                    }
                }
                if body.contains("UNREACHABLE") {
                    findings.push(format!(
                        "{label} ({host}) is unreachable — possible routing or firewall issue."
                    ));
                } else if let Some(loss_line) = body.lines().find(|l| l.contains("Packet loss")) {
                    let pct: u32 = loss_line
                        .chars()
                        .filter(|c| c.is_ascii_digit())
                        .collect::<String>()
                        .parse()
                        .unwrap_or(0);
                    if pct >= 25 {
                        findings.push(format!("{label} ({host}): {pct}% packet loss detected — possible network instability."));
                    }
                    // High latency check
                    if let Some(rtt_line) = body.lines().find(|l| l.contains("RTT min/avg/max")) {
                        // parse avg from "RTT min/avg/max: Xms / Yms / Zms"
                        if let Some(avg_field) = rtt_line.split('/').nth(1) {
                            let avg_str: String =
                                avg_field.chars().filter(|c| c.is_ascii_digit()).collect();
                            let avg: u32 = avg_str.parse().unwrap_or(0);
                            if avg > 150 {
                                findings.push(format!("{label} ({host}): high average RTT ({avg}ms) — check for congestion or routing issues."));
                            }
                        }
                    }
                }
            }
            Err(e) => {
                let _ = writeln!(out, "- Ping error: {e}");
            }
        }
    }

    let mut result = String::from("Host inspection: latency\n\n=== Findings ===\n");
    if findings.is_empty() {
        result.push_str("- Latency and reachability look normal.\n");
    } else {
        for f in &findings {
            let _ = writeln!(result, "- Finding: {f}");
        }
    }
    result.push('\n');
    result.push_str(&out);
    Ok(result)
}

#[cfg(not(windows))]
fn inspect_latency() -> Result<String, String> {
    let mut out = String::from("Host inspection: latency\n\n=== Findings ===\n");
    let targets = [("Cloudflare DNS", "1.1.1.1"), ("Google DNS", "8.8.8.8")];
    let mut findings: Vec<String> = Vec::with_capacity(4);

    for (label, host) in &targets {
        let _ = write!(out, "\n=== Ping: {label} ({host}) ===\n");
        let ping = std::process::Command::new("ping")
            .args(["-c", "4", "-W", "2", host])
            .output();
        match ping {
            Ok(o) => {
                let body = String::from_utf8_lossy(&o.stdout).into_owned();
                for line in body.lines() {
                    let l = line.trim();
                    if l.contains("ms") || l.contains("loss") || l.contains("transmitted") {
                        let _ = write!(out, "- {l}\n");
                    }
                }
                if body.contains("100% packet loss") || body.contains("100.0% packet loss") {
                    findings.push(format!("{label} ({host}) is unreachable."));
                }
            }
            Err(e) => {
                let _ = write!(out, "- ping error: {e}\n");
            }
        }
    }

    if findings.is_empty() {
        out.insert_str(
            "Host inspection: latency\n\n=== Findings ===\n".len(),
            "- Latency and reachability look normal.\n",
        );
    } else {
        let mut prefix = String::new();
        for f in &findings {
            let _ = write!(prefix, "- Finding: {f}\n");
        }
        out.insert_str(
            "Host inspection: latency\n\n=== Findings ===\n".len(),
            &prefix,
        );
    }
    Ok(out)
}

#[cfg(windows)]
fn inspect_network_adapter() -> Result<String, String> {
    let mut out = String::with_capacity(1024);

    out.push_str("=== Network adapters ===\n");
    let ps_adapters = r#"
Get-NetAdapter | Sort-Object Status,Name | ForEach-Object {
    $speed = if ($_.LinkSpeed) { $_.LinkSpeed } else { "Unknown" }
    "$($_.Name) | Status: $($_.Status) | Speed: $speed | MAC: $($_.MacAddress) | Driver: $($_.DriverVersion)"
}
"#;
    match run_powershell(ps_adapters) {
        Ok(o) => {
            for line in o.lines() {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        Err(e) => {
            let _ = writeln!(out, "- Adapter query error: {e}");
        }
    }

    out.push_str("\n=== Duplex and negotiated speed ===\n");
    let ps_duplex = r#"
Get-NetAdapter | Where-Object Status -eq "Up" | ForEach-Object {
    $name = $_.Name
    $duplex = Get-NetAdapterAdvancedProperty -Name $name -ErrorAction SilentlyContinue |
        Where-Object { $_.DisplayName -match "Duplex|Speed" } |
        Select-Object DisplayName, DisplayValue
    if ($duplex) {
        "--- $name ---"
        $duplex | ForEach-Object { "  $($_.DisplayName): $($_.DisplayValue)" }
    } else {
        "--- $name --- (no duplex/speed property exposed by driver)"
    }
}
"#;
    match run_powershell(ps_duplex) {
        Ok(o) => {
            let lines: Vec<&str> = o
                .lines()
                .map(|l| l.trim())
                .filter(|l| !l.is_empty())
                .collect();
            for l in &lines {
                let _ = writeln!(out, "- {l}");
            }
        }
        Err(e) => {
            let _ = writeln!(out, "- Duplex query error: {e}");
        }
    }

    out.push_str("\n=== Offload and performance settings (Up adapters) ===\n");
    let ps_offload = r#"
Get-NetAdapter | Where-Object Status -eq "Up" | ForEach-Object {
    $name = $_.Name
    $props = Get-NetAdapterAdvancedProperty -Name $name -ErrorAction SilentlyContinue |
        Where-Object { $_.DisplayName -match "Offload|RSS|Jumbo|Buffer|Flow|Interrupt|Checksum|Large Send" } |
        Select-Object DisplayName, DisplayValue
    if ($props) {
        "--- $name ---"
        $props | ForEach-Object { "  $($_.DisplayName): $($_.DisplayValue)" }
    }
}
"#;
    match run_powershell(ps_offload) {
        Ok(o) => {
            let lines: Vec<&str> = o
                .lines()
                .map(|l| l.trim())
                .filter(|l| !l.is_empty())
                .collect();
            if lines.is_empty() {
                out.push_str(
                    "- No offload settings exposed by driver (common on virtual/Wi-Fi adapters)\n",
                );
            } else {
                for l in &lines {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        Err(e) => {
            let _ = writeln!(out, "- Offload query error: {e}");
        }
    }

    out.push_str("\n=== Adapter error counters ===\n");
    let ps_errors = r#"
Get-NetAdapterStatistics | ForEach-Object {
    $errs = $_.ReceivedPacketErrors + $_.OutboundPacketErrors + $_.ReceivedDiscardedPackets + $_.OutboundDiscardedPackets
    if ($errs -gt 0) {
        "$($_.Name) | RX errors: $($_.ReceivedPacketErrors) | TX errors: $($_.OutboundPacketErrors) | RX discards: $($_.ReceivedDiscardedPackets) | TX discards: $($_.OutboundDiscardedPackets)"
    }
}
"#;
    match run_powershell(ps_errors) {
        Ok(o) => {
            let lines: Vec<&str> = o
                .lines()
                .map(|l| l.trim())
                .filter(|l| !l.is_empty())
                .collect();
            if lines.is_empty() {
                out.push_str("- No adapter errors or discards detected.\n");
            } else {
                for l in &lines {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        Err(e) => {
            let _ = writeln!(out, "- Error counter query: {e}");
        }
    }

    out.push_str("\n=== Wake-on-LAN and power settings ===\n");
    let ps_wol = r#"
Get-NetAdapter | Where-Object Status -eq "Up" | ForEach-Object {
    $wol = Get-NetAdapterPowerManagement -Name $_.Name -ErrorAction SilentlyContinue
    if ($wol) {
        "$($_.Name) | WakeOnMagicPacket: $($wol.WakeOnMagicPacket) | AllowComputerToTurnOffDevice: $($wol.AllowComputerToTurnOffDevice)"
    }
}
"#;
    match run_powershell(ps_wol) {
        Ok(o) => {
            let lines: Vec<&str> = o
                .lines()
                .map(|l| l.trim())
                .filter(|l| !l.is_empty())
                .collect();
            if lines.is_empty() {
                out.push_str("- Power management data unavailable for active adapters.\n");
            } else {
                for l in &lines {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        Err(e) => {
            let _ = writeln!(out, "- WoL query error: {e}");
        }
    }

    let mut findings: Vec<String> = Vec::with_capacity(4);
    // Check for error-prone adapters
    if out.contains("RX errors:") || out.contains("TX errors:") {
        findings
            .push("Adapter errors detected — check cabling, driver, or duplex mismatch.".into());
    }
    // Check for half-duplex (rare but still seen on older switches)
    if out.contains("Half") {
        findings.push("Half-duplex adapter detected — likely a duplex mismatch with the switch; set both sides to full-duplex.".into());
    }

    let mut result = String::from("Host inspection: network_adapter\n\n=== Findings ===\n");
    if findings.is_empty() {
        result.push_str("- Network adapter configuration looks normal.\n");
    } else {
        for f in &findings {
            let _ = writeln!(result, "- Finding: {f}");
        }
    }
    result.push('\n');
    result.push_str(&out);
    Ok(result)
}

#[cfg(not(windows))]
fn inspect_network_adapter() -> Result<String, String> {
    let mut out = String::from("Host inspection: network_adapter\n\n=== Findings ===\n- Network adapter inspection running on Unix.\n\n");

    out.push_str("=== Network adapters (ip link) ===\n");
    let ip_link = std::process::Command::new("ip")
        .args(["link", "show"])
        .output();
    if let Ok(o) = ip_link {
        for line in String::from_utf8_lossy(&o.stdout).lines() {
            let l = line.trim();
            if !l.is_empty() {
                let _ = write!(out, "- {l}\n");
            }
        }
    }

    out.push_str("\n=== Adapter statistics (ip -s link) ===\n");
    let ip_stats = std::process::Command::new("ip")
        .args(["-s", "link", "show"])
        .output();
    if let Ok(o) = ip_stats {
        for line in String::from_utf8_lossy(&o.stdout).lines() {
            let l = line.trim();
            if l.contains("RX") || l.contains("TX") || l.contains("errors") || l.contains("dropped")
            {
                let _ = write!(out, "- {l}\n");
            }
        }
    }
    Ok(out)
}

#[cfg(windows)]
fn inspect_dhcp() -> Result<String, String> {
    let mut out = String::with_capacity(1024);

    out.push_str("=== DHCP lease details (per adapter) ===\n");
    let ps_dhcp = r#"
$adapters = Get-WmiObject Win32_NetworkAdapterConfiguration -ErrorAction SilentlyContinue |
    Where-Object { $_.IPEnabled -eq $true }
foreach ($a in $adapters) {
    "--- $($a.Description) ---"
    "  DHCP Enabled:      $($a.DHCPEnabled)"
    if ($a.DHCPEnabled) {
        "  DHCP Server:       $($a.DHCPServer)"
        $obtained = $a.ConvertToDateTime($a.DHCPLeaseObtained) 2>$null
        $expires  = $a.ConvertToDateTime($a.DHCPLeaseExpires)  2>$null
        "  Lease Obtained:    $obtained"
        "  Lease Expires:     $expires"
    }
    "  IP Address:        $($a.IPAddress -join ', ')"
    "  Subnet Mask:       $($a.IPSubnet -join ', ')"
    "  Default Gateway:   $($a.DefaultIPGateway -join ', ')"
    "  DNS Servers:       $($a.DNSServerSearchOrder -join ', ')"
    "  MAC Address:       $($a.MACAddress)"
    ""
}
"#;
    match run_powershell(ps_dhcp) {
        Ok(o) => {
            for line in o.lines() {
                let l = line.trim_end();
                if !l.is_empty() {
                    let _ = writeln!(out, "{l}");
                }
            }
        }
        Err(e) => {
            let _ = writeln!(out, "- DHCP query error: {e}");
        }
    }

    // Findings: check for expired or very-soon-expiring leases
    let mut findings: Vec<String> = Vec::with_capacity(4);
    let ps_expiry = r#"
$adapters = Get-WmiObject Win32_NetworkAdapterConfiguration | Where-Object { $_.DHCPEnabled -and $_.IPEnabled }
foreach ($a in $adapters) {
    try {
        $exp = $a.ConvertToDateTime($a.DHCPLeaseExpires)
        $now = Get-Date
        $hrs = ($exp - $now).TotalHours
        if ($hrs -lt 0) { "$($a.Description): EXPIRED" }
        elseif ($hrs -lt 2) { "$($a.Description): expires in $([Math]::Round($hrs,1)) hours" }
    } catch {}
}
"#;
    if let Ok(o) = run_powershell(ps_expiry) {
        for line in o.lines() {
            let l = line.trim();
            if !l.is_empty() {
                if l.contains("EXPIRED") {
                    findings.push(format!("DHCP lease EXPIRED on adapter: {l}"));
                } else if l.contains("expires in") {
                    findings.push(format!("DHCP lease expiring soon — {l}"));
                }
            }
        }
    }

    let mut result = String::from("Host inspection: dhcp\n\n=== Findings ===\n");
    if findings.is_empty() {
        result.push_str("- DHCP leases look healthy.\n");
    } else {
        for f in &findings {
            let _ = writeln!(result, "- Finding: {f}");
        }
    }
    result.push('\n');
    result.push_str(&out);
    Ok(result)
}

#[cfg(not(windows))]
fn inspect_dhcp() -> Result<String, String> {
    let mut out = String::from(
        "Host inspection: dhcp\n\n=== Findings ===\n- DHCP lease inspection running on Unix.\n\n",
    );
    out.push_str("=== DHCP leases (dhclient / NetworkManager) ===\n");
    for path in &["/var/lib/dhcp/dhclient.leases", "/var/lib/NetworkManager"] {
        if std::path::Path::new(path).exists() {
            let cat = std::process::Command::new("cat").arg(path).output();
            if let Ok(o) = cat {
                let text = String::from_utf8_lossy(&o.stdout);
                for line in text.lines().take(40) {
                    let l = line.trim();
                    if l.contains("lease")
                        || l.contains("expire")
                        || l.contains("server")
                        || l.contains("address")
                    {
                        let _ = write!(out, "- {l}\n");
                    }
                }
            }
        }
    }
    // Also try ip addr for current IPs
    let ip = std::process::Command::new("ip")
        .args(["addr", "show"])
        .output();
    if let Ok(o) = ip {
        out.push_str("\n=== Current IP addresses (ip addr) ===\n");
        for line in String::from_utf8_lossy(&o.stdout).lines() {
            let l = line.trim();
            if l.starts_with("inet") || l.contains("dynamic") {
                let _ = write!(out, "- {l}\n");
            }
        }
    }
    Ok(out)
}

#[cfg(windows)]
fn inspect_mtu() -> Result<String, String> {
    let mut out = String::with_capacity(1024);

    out.push_str("=== Per-adapter MTU (IPv4) ===\n");
    let ps_mtu = r#"
Get-NetIPInterface | Where-Object { $_.AddressFamily -eq "IPv4" } |
    Sort-Object ConnectionState, InterfaceAlias |
    ForEach-Object {
        "$($_.InterfaceAlias) | MTU: $($_.NlMtu) bytes | State: $($_.ConnectionState)"
    }
"#;
    match run_powershell(ps_mtu) {
        Ok(o) => {
            for line in o.lines() {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        Err(e) => {
            let _ = writeln!(out, "- MTU query error: {e}");
        }
    }

    out.push_str("\n=== Per-adapter MTU (IPv6) ===\n");
    let ps_mtu6 = r#"
Get-NetIPInterface | Where-Object { $_.AddressFamily -eq "IPv6" } |
    Sort-Object ConnectionState, InterfaceAlias |
    ForEach-Object {
        "$($_.InterfaceAlias) | MTU: $($_.NlMtu) bytes | State: $($_.ConnectionState)"
    }
"#;
    match run_powershell(ps_mtu6) {
        Ok(o) => {
            for line in o.lines() {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        Err(e) => {
            let _ = writeln!(out, "- IPv6 MTU query error: {e}");
        }
    }

    out.push_str("\n=== Path MTU discovery (ping DF-bit to 8.8.8.8) ===\n");
    // Send a 1472-byte payload (1500 - 28 IP+ICMP headers) to test standard Ethernet MTU
    let ps_pmtu = r#"
$sizes = @(1472, 1400, 1280, 576)
$result = $null
foreach ($s in $sizes) {
    $r = Test-Connection -ComputerName "8.8.8.8" -Count 1 -BufferSize $s -ErrorAction SilentlyContinue
    if ($r) { $result = $s; break }
}
if ($result) { "Largest successful payload: $result bytes (path MTU >= $($result + 28) bytes)" }
else { "All test sizes failed — path MTU may be very restricted or ICMP is blocked" }
"#;
    match run_powershell(ps_pmtu) {
        Ok(o) => {
            for line in o.lines() {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = writeln!(out, "- {l}");
                }
            }
        }
        Err(e) => {
            let _ = writeln!(out, "- Path MTU test error: {e}");
        }
    }

    let mut findings: Vec<String> = Vec::with_capacity(4);
    if out.contains("MTU: 576 bytes") {
        findings.push("576-byte MTU detected — severely restricted path, likely a misconfigured VPN or legacy link.".into());
    }
    if out.contains("MTU: 1280 bytes") && !out.contains("IPv6") {
        findings.push(
            "1280-byte MTU on an IPv4 interface is unusually low — check VPN or PPPoE config."
                .into(),
        );
    }
    if out.contains("All test sizes failed") {
        findings.push("Path MTU test failed — ICMP may be blocked by firewall or all tested sizes exceed the path limit.".into());
    }

    let mut result = String::from("Host inspection: mtu\n\n=== Findings ===\n");
    if findings.is_empty() {
        result.push_str("- MTU configuration looks normal.\n");
    } else {
        for f in &findings {
            let _ = writeln!(result, "- Finding: {f}");
        }
    }
    result.push('\n');
    result.push_str(&out);
    Ok(result)
}

#[cfg(not(windows))]
fn inspect_mtu() -> Result<String, String> {
    let mut out = String::from(
        "Host inspection: mtu\n\n=== Findings ===\n- MTU inspection running on Unix.\n\n",
    );

    out.push_str("=== Per-interface MTU (ip link) ===\n");
    let ip = std::process::Command::new("ip")
        .args(["link", "show"])
        .output();
    if let Ok(o) = ip {
        for line in String::from_utf8_lossy(&o.stdout).lines() {
            let l = line.trim();
            if l.contains("mtu") || l.starts_with("\\d") {
                let _ = write!(out, "- {l}\n");
            }
        }
    }

    out.push_str("\n=== Path MTU test (ping -M do to 8.8.8.8) ===\n");
    let ping = std::process::Command::new("ping")
        .args(["-c", "1", "-M", "do", "-s", "1472", "8.8.8.8"])
        .output();
    match ping {
        Ok(o) => {
            let body = String::from_utf8_lossy(&o.stdout);
            for line in body.lines() {
                let l = line.trim();
                if !l.is_empty() {
                    let _ = write!(out, "- {l}\n");
                }
            }
        }
        Err(e) => {
            let _ = write!(out, "- Ping error: {e}\n");
        }
    }
    Ok(out)
}

#[cfg(not(windows))]
fn inspect_cpu_power() -> Result<String, String> {
    let mut out = String::from("Host inspection: cpu_power\n\n=== Findings ===\n- CPU power inspection running on Unix.\n\n");

    // Linux: cpufreq-info or /sys/devices/system/cpu
    out.push_str("=== CPU frequency (Linux) ===\n");
    let cat_scaling = std::process::Command::new("cat")
        .arg("/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq")
        .output();
    if let Ok(o) = cat_scaling {
        let khz: u64 = String::from_utf8_lossy(&o.stdout)
            .trim()
            .parse()
            .unwrap_or(0);
        if khz > 0 {
            let _ = write!(out, "- Current: {} MHz\n", khz / 1000);
        }
    }
    let cat_max = std::process::Command::new("cat")
        .arg("/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq")
        .output();
    if let Ok(o) = cat_max {
        let khz: u64 = String::from_utf8_lossy(&o.stdout)
            .trim()
            .parse()
            .unwrap_or(0);
        if khz > 0 {
            let _ = write!(out, "- Max: {} MHz\n", khz / 1000);
        }
    }
    let governor = std::process::Command::new("cat")
        .arg("/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor")
        .output();
    if let Ok(o) = governor {
        let g = String::from_utf8_lossy(&o.stdout);
        let g = g.trim();
        if !g.is_empty() {
            let _ = write!(out, "- Governor: {g}\n");
        }
    }
    Ok(out)
}

// ── IPv6 ────────────────────────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_ipv6() -> Result<String, String> {
    let script = r#"
$result = [System.Text.StringBuilder]::new()

# Per-adapter IPv6 addresses
$result.AppendLine("=== IPv6 addresses per adapter ===") | Out-Null
$adapters = Get-NetIPAddress -AddressFamily IPv6 -ErrorAction SilentlyContinue |
    Where-Object { $_.IPAddress -notmatch '^::1$' } |
    Sort-Object InterfaceAlias
foreach ($a in $adapters) {
    $prefix = $a.PrefixOrigin
    $suffix = $a.SuffixOrigin
    $scope  = $a.AddressState
    $result.AppendLine("  [$($a.InterfaceAlias)] $($a.IPAddress)/$($a.PrefixLength)  origin=$prefix/$suffix  state=$scope") | Out-Null
}
if (-not $adapters) { $result.AppendLine("  No global/link-local IPv6 addresses found.") | Out-Null }

# Default gateway IPv6
$result.AppendLine("") | Out-Null
$result.AppendLine("=== IPv6 default gateway ===") | Out-Null
$gw6 = Get-NetRoute -AddressFamily IPv6 -DestinationPrefix '::/0' -ErrorAction SilentlyContinue
if ($gw6) {
    foreach ($g in $gw6) {
        $result.AppendLine("  [$($g.InterfaceAlias)] via $($g.NextHop)  metric=$($g.RouteMetric)") | Out-Null
    }
} else {
    $result.AppendLine("  No IPv6 default gateway configured.") | Out-Null
}

# DHCPv6 lease info
$result.AppendLine("") | Out-Null
$result.AppendLine("=== DHCPv6 / prefix delegation ===") | Out-Null
$dhcpv6 = Get-NetIPAddress -AddressFamily IPv6 -ErrorAction SilentlyContinue |
    Where-Object { $_.PrefixOrigin -eq 'Dhcp' -or $_.SuffixOrigin -eq 'Dhcp' }
if ($dhcpv6) {
    foreach ($d in $dhcpv6) {
        $result.AppendLine("  [$($d.InterfaceAlias)] $($d.IPAddress) (DHCPv6-assigned)") | Out-Null
    }
} else {
    $result.AppendLine("  No DHCPv6-assigned addresses found (SLAAC or static in use).") | Out-Null
}

# Privacy extensions
$result.AppendLine("") | Out-Null
$result.AppendLine("=== Privacy extensions (RFC 4941) ===") | Out-Null
try {
    $priv = netsh interface ipv6 show privacy
    $result.AppendLine(($priv -join "`n")) | Out-Null
} catch {
    $result.AppendLine("  Could not retrieve privacy extension state.") | Out-Null
}

# Tunnel adapters
$result.AppendLine("") | Out-Null
$result.AppendLine("=== Tunnel adapters ===") | Out-Null
$tunnels = Get-NetAdapter -ErrorAction SilentlyContinue | Where-Object { $_.InterfaceDescription -match 'Teredo|6to4|ISATAP|Tunnel' }
if ($tunnels) {
    foreach ($t in $tunnels) {
        $result.AppendLine("  $($t.Name): $($t.InterfaceDescription)  Status=$($t.Status)") | Out-Null
    }
} else {
    $result.AppendLine("  No Teredo/6to4/ISATAP tunnel adapters found.") | Out-Null
}

# Findings
$findings = [System.Collections.Generic.List[string]]::new()
$globalAddrs = Get-NetIPAddress -AddressFamily IPv6 -ErrorAction SilentlyContinue |
    Where-Object { $_.IPAddress -match '^2[0-9a-f]{3}:' -or $_.IPAddress -match '^fc|^fd' }
if (-not $globalAddrs) { $findings.Add("No global unicast IPv6 address assigned — IPv6 internet access may be unavailable.") }
$noGw6 = -not (Get-NetRoute -AddressFamily IPv6 -DestinationPrefix '::/0' -ErrorAction SilentlyContinue)
if ($noGw6) { $findings.Add("No IPv6 default gateway — IPv6 routing not active.") }

$result.AppendLine("") | Out-Null
$result.AppendLine("=== Findings ===") | Out-Null
if ($findings.Count -eq 0) {
    $result.AppendLine("- IPv6 configuration looks healthy.") | Out-Null
} else {
    foreach ($f in $findings) { $result.AppendLine("- $f") | Out-Null }
}

Write-Output $result.ToString()
"#;
    let out = run_powershell(script)?;
    Ok(format!("Host inspection: ipv6\n\n{out}"))
}

#[cfg(not(windows))]
fn inspect_ipv6() -> Result<String, String> {
    let mut out = String::from("Host inspection: ipv6\n\n=== IPv6 addresses (ip -6 addr) ===\n");
    if let Ok(o) = std::process::Command::new("ip")
        .args(["-6", "addr", "show"])
        .output()
    {
        out.push_str(&String::from_utf8_lossy(&o.stdout));
    }
    out.push_str("\n=== IPv6 routes (ip -6 route) ===\n");
    if let Ok(o) = std::process::Command::new("ip")
        .args(["-6", "route"])
        .output()
    {
        out.push_str(&String::from_utf8_lossy(&o.stdout));
    }
    Ok(out)
}

// ── TCP Parameters ──────────────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_tcp_params() -> Result<String, String> {
    let script = r#"
$result = [System.Text.StringBuilder]::new()

# Autotuning and global TCP settings
$result.AppendLine("=== TCP global settings (netsh) ===") | Out-Null
try {
    $global = netsh interface tcp show global
    foreach ($line in $global) {
        $l = $line.Trim()
        if ($l -and $l -notmatch '^---' -and $l -notmatch '^TCP Global') {
            $result.AppendLine("  $l") | Out-Null
        }
    }
} catch {
    $result.AppendLine("  Could not retrieve TCP global settings.") | Out-Null
}

# Supplemental params via Get-NetTCPSetting
$result.AppendLine("") | Out-Null
$result.AppendLine("=== TCP settings profiles ===") | Out-Null
try {
    $tcpSettings = Get-NetTCPSetting -ErrorAction SilentlyContinue
    foreach ($s in $tcpSettings) {
        $result.AppendLine("  Profile: $($s.SettingName)") | Out-Null
        $result.AppendLine("    CongestionProvider:      $($s.CongestionProvider)") | Out-Null
        $result.AppendLine("    InitialCongestionWindow: $($s.InitialCongestionWindowMss) MSS") | Out-Null
        $result.AppendLine("    AutoTuningLevelLocal:    $($s.AutoTuningLevelLocal)") | Out-Null
        $result.AppendLine("    ScalingHeuristics:       $($s.ScalingHeuristics)") | Out-Null
        $result.AppendLine("    DynamicPortRangeStart:   $($s.DynamicPortRangeStartPort)") | Out-Null
        $result.AppendLine("    DynamicPortRangeEnd:     $($s.DynamicPortRangeStartPort + $s.DynamicPortRangeNumberOfPorts - 1)") | Out-Null
        $result.AppendLine("") | Out-Null
    }
} catch {
    $result.AppendLine("  Get-NetTCPSetting unavailable.") | Out-Null
}

# Chimney offload state
$result.AppendLine("=== TCP Chimney offload ===") | Out-Null
try {
    $chimney = netsh interface tcp show chimney
    $result.AppendLine(($chimney -join "`n  ")) | Out-Null
} catch {
    $result.AppendLine("  Could not retrieve chimney state.") | Out-Null
}

# ECN state
$result.AppendLine("") | Out-Null
$result.AppendLine("=== ECN capability ===") | Out-Null
try {
    $ecn = netsh interface tcp show ecncapability
    $result.AppendLine(($ecn -join "`n  ")) | Out-Null
} catch {
    $result.AppendLine("  Could not retrieve ECN state.") | Out-Null
}

# Findings
$findings = [System.Collections.Generic.List[string]]::new()
try {
    $ts = Get-NetTCPSetting -SettingName 'Internet' -ErrorAction SilentlyContinue
    if ($ts -and $ts.AutoTuningLevelLocal -eq 'Disabled') {
        $findings.Add("TCP autotuning is DISABLED on the Internet profile — may limit throughput on high-latency links.")
    }
    if ($ts -and $ts.CongestionProvider -ne 'CUBIC' -and $ts.CongestionProvider -ne 'NewReno' -and $ts.CongestionProvider) {
        $findings.Add("Non-standard congestion provider: $($ts.CongestionProvider)")
    }
} catch {}

$result.AppendLine("") | Out-Null
$result.AppendLine("=== Findings ===") | Out-Null
if ($findings.Count -eq 0) {
    $result.AppendLine("- TCP parameters look normal.") | Out-Null
} else {
    foreach ($f in $findings) { $result.AppendLine("- $f") | Out-Null }
}

Write-Output $result.ToString()
"#;
    let out = run_powershell(script)?;
    Ok(format!("Host inspection: tcp_params\n\n{out}"))
}

#[cfg(not(windows))]
fn inspect_tcp_params() -> Result<String, String> {
    let mut out = String::from("Host inspection: tcp_params\n\n=== TCP kernel parameters ===\n");
    for key in &[
        "net.ipv4.tcp_congestion_control",
        "net.ipv4.tcp_rmem",
        "net.ipv4.tcp_wmem",
        "net.ipv4.tcp_window_scaling",
        "net.ipv4.tcp_ecn",
        "net.ipv4.tcp_timestamps",
    ] {
        if let Ok(o) = std::process::Command::new("sysctl").arg(key).output() {
            let _ = write!(out, "  {}\n", String::from_utf8_lossy(&o.stdout).trim());
        }
    }
    Ok(out)
}

// ── WLAN Profiles ───────────────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_wlan_profiles() -> Result<String, String> {
    let script = r#"
$result = [System.Text.StringBuilder]::new()

# List all saved profiles
$result.AppendLine("=== Saved wireless profiles ===") | Out-Null
try {
    $profilesRaw = netsh wlan show profiles
    $profiles = $profilesRaw | Select-String 'All User Profile\s*:\s*(.+)' | ForEach-Object {
        $_.Matches[0].Groups[1].Value.Trim()
    }

    if (-not $profiles) {
        $result.AppendLine("  No saved wireless profiles found.") | Out-Null
    } else {
        foreach ($p in $profiles) {
            $result.AppendLine("") | Out-Null
            $result.AppendLine("  Profile: $p") | Out-Null
            # Get detail for each profile
            $detail = netsh wlan show profile name="$p" key=clear 2>$null
            $auth      = ($detail | Select-String 'Authentication\s*:\s*(.+)') | Select-Object -First 1
            $cipher    = ($detail | Select-String 'Cipher\s*:\s*(.+)') | Select-Object -First 1
            $conn      = ($detail | Select-String 'Connection mode\s*:\s*(.+)') | Select-Object -First 1
            $autoConn  = ($detail | Select-String 'Connect automatically\s*:\s*(.+)') | Select-Object -First 1
            if ($auth)     { $result.AppendLine("    Authentication:    $($auth.Matches[0].Groups[1].Value.Trim())") | Out-Null }
            if ($cipher)   { $result.AppendLine("    Cipher:            $($cipher.Matches[0].Groups[1].Value.Trim())") | Out-Null }
            if ($conn)     { $result.AppendLine("    Connection mode:   $($conn.Matches[0].Groups[1].Value.Trim())") | Out-Null }
            if ($autoConn) { $result.AppendLine("    Auto-connect:      $($autoConn.Matches[0].Groups[1].Value.Trim())") | Out-Null }
        }
    }
} catch {
    $result.AppendLine("  netsh wlan unavailable (no wireless adapter or WLAN service not running).") | Out-Null
}

# Currently connected SSID
$result.AppendLine("") | Out-Null
$result.AppendLine("=== Currently connected ===") | Out-Null
try {
    $conn = netsh wlan show interfaces
    $ssid   = ($conn | Select-String 'SSID\s*:\s*(?!BSSID)(.+)') | Select-Object -First 1
    $bssid  = ($conn | Select-String 'BSSID\s*:\s*(.+)') | Select-Object -First 1
    $signal = ($conn | Select-String 'Signal\s*:\s*(.+)') | Select-Object -First 1
    $radio  = ($conn | Select-String 'Radio type\s*:\s*(.+)') | Select-Object -First 1
    if ($ssid)   { $result.AppendLine("  SSID:       $($ssid.Matches[0].Groups[1].Value.Trim())") | Out-Null }
    if ($bssid)  { $result.AppendLine("  BSSID:      $($bssid.Matches[0].Groups[1].Value.Trim())") | Out-Null }
    if ($signal) { $result.AppendLine("  Signal:     $($signal.Matches[0].Groups[1].Value.Trim())") | Out-Null }
    if ($radio)  { $result.AppendLine("  Radio type: $($radio.Matches[0].Groups[1].Value.Trim())") | Out-Null }
    if (-not $ssid) { $result.AppendLine("  Not connected to any wireless network.") | Out-Null }
} catch {
    $result.AppendLine("  Could not query wireless interface state.") | Out-Null
}

# Findings
$findings = [System.Collections.Generic.List[string]]::new()
try {
    $allDetail = netsh wlan show profiles 2>$null
    $profileNames = $allDetail | Select-String 'All User Profile\s*:\s*(.+)' | ForEach-Object {
        $_.Matches[0].Groups[1].Value.Trim()
    }
    foreach ($pn in $profileNames) {
        $det = netsh wlan show profile name="$pn" key=clear 2>$null
        $authLine = ($det | Select-String 'Authentication\s*:\s*(.+)') | Select-Object -First 1
        if ($authLine) {
            $authVal = $authLine.Matches[0].Groups[1].Value.Trim()
            if ($authVal -match 'Open|WEP|None') {
                $findings.Add("Profile '$pn' uses weak/open authentication: $authVal")
            }
        }
    }
} catch {}

$result.AppendLine("") | Out-Null
$result.AppendLine("=== Findings ===") | Out-Null
if ($findings.Count -eq 0) {
    $result.AppendLine("- All saved wireless profiles use acceptable authentication.") | Out-Null
} else {
    foreach ($f in $findings) { $result.AppendLine("- $f") | Out-Null }
}

Write-Output $result.ToString()
"#;
    let out = run_powershell(script)?;
    Ok(format!("Host inspection: wlan_profiles\n\n{out}"))
}

#[cfg(not(windows))]
fn inspect_wlan_profiles() -> Result<String, String> {
    let mut out =
        String::from("Host inspection: wlan_profiles\n\n=== Saved wireless profiles ===\n");
    // Try nmcli (NetworkManager)
    if let Ok(o) = std::process::Command::new("nmcli")
        .args(["-t", "-f", "NAME,TYPE,DEVICE", "connection", "show"])
        .output()
    {
        for line in String::from_utf8_lossy(&o.stdout).lines() {
            if line.contains("wireless") || line.contains("wifi") {
                let _ = write!(out, "  {line}\n");
            }
        }
    } else {
        out.push_str("  nmcli not available.\n");
    }
    Ok(out)
}

// ── IPSec ───────────────────────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_ipsec() -> Result<String, String> {
    let script = r#"
$result = [System.Text.StringBuilder]::new()

# IPSec rules (firewall-integrated)
$result.AppendLine("=== IPSec connection security rules ===") | Out-Null
try {
    $rules = Get-NetIPsecRule -ErrorAction SilentlyContinue | Where-Object { $_.Enabled -eq 'True' }
    if ($rules) {
        foreach ($r in $rules) {
            $result.AppendLine("  [$($r.DisplayName)]") | Out-Null
            $result.AppendLine("    Mode:       $($r.Mode)") | Out-Null
            $result.AppendLine("    Action:     $($r.Action)") | Out-Null
            $result.AppendLine("    InProfile:  $($r.Profile)") | Out-Null
        }
    } else {
        $result.AppendLine("  No enabled IPSec connection security rules found.") | Out-Null
    }
} catch {
    $result.AppendLine("  Get-NetIPsecRule unavailable.") | Out-Null
}

# Active main-mode SAs
$result.AppendLine("") | Out-Null
$result.AppendLine("=== Active IPSec main-mode SAs ===") | Out-Null
try {
    $mmSAs = Get-NetIPsecMainModeSA -ErrorAction SilentlyContinue
    if ($mmSAs) {
        foreach ($sa in $mmSAs) {
            $result.AppendLine("  Local: $($sa.LocalAddress)  <-->  Remote: $($sa.RemoteAddress)") | Out-Null
            $result.AppendLine("    AuthMethod: $($sa.LocalFirstId)  Cipher: $($sa.Cipher)") | Out-Null
        }
    } else {
        $result.AppendLine("  No active main-mode IPSec SAs.") | Out-Null
    }
} catch {
    $result.AppendLine("  Get-NetIPsecMainModeSA unavailable.") | Out-Null
}

# Active quick-mode SAs
$result.AppendLine("") | Out-Null
$result.AppendLine("=== Active IPSec quick-mode SAs ===") | Out-Null
try {
    $qmSAs = Get-NetIPsecQuickModeSA -ErrorAction SilentlyContinue
    if ($qmSAs) {
        foreach ($sa in $qmSAs) {
            $result.AppendLine("  Local: $($sa.LocalAddress)  <-->  Remote: $($sa.RemoteAddress)") | Out-Null
            $result.AppendLine("    Encapsulation: $($sa.EncapsulationMode)  Protocol: $($sa.TransportLayerProtocol)") | Out-Null
        }
    } else {
        $result.AppendLine("  No active quick-mode IPSec SAs.") | Out-Null
    }
} catch {
    $result.AppendLine("  Get-NetIPsecQuickModeSA unavailable.") | Out-Null
}

# IKE service state
$result.AppendLine("") | Out-Null
$result.AppendLine("=== IKE / IPSec Policy Agent service ===") | Out-Null
$ikeAgentSvc = Get-Service -Name 'PolicyAgent' -ErrorAction SilentlyContinue
if ($ikeAgentSvc) {
    $result.AppendLine("  PolicyAgent (IPSec Policy Agent): $($ikeAgentSvc.Status)") | Out-Null
} else {
    $result.AppendLine("  PolicyAgent service not found.") | Out-Null
}

# Findings
$findings = [System.Collections.Generic.List[string]]::new()
$mmSACount = 0
try { $mmSACount = (Get-NetIPsecMainModeSA -ErrorAction SilentlyContinue | Measure-Object).Count } catch {}
if ($mmSACount -gt 0) {
    $findings.Add("$mmSACount active IPSec main-mode SA(s) — IPSec tunnel is active.")
}

$result.AppendLine("") | Out-Null
$result.AppendLine("=== Findings ===") | Out-Null
if ($findings.Count -eq 0) {
    $result.AppendLine("- No active IPSec SAs detected (no IPSec tunnel currently established).") | Out-Null
} else {
    foreach ($f in $findings) { $result.AppendLine("- $f") | Out-Null }
}

Write-Output $result.ToString()
"#;
    let out = run_powershell(script)?;
    Ok(format!("Host inspection: ipsec\n\n{out}"))
}

#[cfg(not(windows))]
fn inspect_ipsec() -> Result<String, String> {
    let mut out = String::from("Host inspection: ipsec\n\n=== IPSec SAs (ip xfrm state) ===\n");
    if let Ok(o) = std::process::Command::new("ip")
        .args(["xfrm", "state"])
        .output()
    {
        let body = String::from_utf8_lossy(&o.stdout);
        if body.trim().is_empty() {
            out.push_str("  No active IPSec SAs.\n");
        } else {
            out.push_str(&body);
        }
    }
    out.push_str("\n=== IPSec policies (ip xfrm policy) ===\n");
    if let Ok(o) = std::process::Command::new("ip")
        .args(["xfrm", "policy"])
        .output()
    {
        let body = String::from_utf8_lossy(&o.stdout);
        if body.trim().is_empty() {
            out.push_str("  No IPSec policies.\n");
        } else {
            out.push_str(&body);
        }
    }
    Ok(out)
}

// ── NetBIOS ──────────────────────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_netbios() -> Result<String, String> {
    let script = r#"
$result = [System.Text.StringBuilder]::new()

# NetBIOS node type and WINS per adapter
$result.AppendLine("=== NetBIOS configuration per adapter ===") | Out-Null
try {
    $adapters = Get-WmiObject Win32_NetworkAdapterConfiguration -ErrorAction SilentlyContinue |
        Where-Object { $_.IPEnabled -eq $true }
    foreach ($a in $adapters) {
        $nodeType = switch ($a.TcpipNetbiosOptions) {
            0 { "EnableNetBIOSViaDHCP" }
            1 { "Enabled" }
            2 { "Disabled" }
            default { "Unknown ($($a.TcpipNetbiosOptions))" }
        }
        $result.AppendLine("  [$($a.Description)]") | Out-Null
        $result.AppendLine("    NetBIOS over TCP/IP: $nodeType") | Out-Null
        if ($a.WINSPrimaryServer) {
            $result.AppendLine("    WINS Primary:        $($a.WINSPrimaryServer)") | Out-Null
        }
        if ($a.WINSSecondaryServer) {
            $result.AppendLine("    WINS Secondary:      $($a.WINSSecondaryServer)") | Out-Null
        }
    }
} catch {
    $result.AppendLine("  Could not query NetBIOS adapter config.") | Out-Null
}

# nbtstat -n — registered local NetBIOS names
$result.AppendLine("") | Out-Null
$result.AppendLine("=== Registered NetBIOS names (nbtstat -n) ===") | Out-Null
try {
    $nbt = nbtstat -n 2>$null
    foreach ($line in $nbt) {
        $l = $line.Trim()
        if ($l -and $l -notmatch '^Node|^Host|^Registered|^-{3}') {
            $result.AppendLine("  $l") | Out-Null
        }
    }
} catch {
    $result.AppendLine("  nbtstat not available.") | Out-Null
}

# NetBIOS session table
$result.AppendLine("") | Out-Null
$result.AppendLine("=== Active NetBIOS sessions (nbtstat -s) ===") | Out-Null
try {
    $sessions = nbtstat -s 2>$null | Where-Object { $_.Trim() -ne '' }
    if ($sessions) {
        foreach ($s in $sessions) { $result.AppendLine("  $($s.Trim())") | Out-Null }
    } else {
        $result.AppendLine("  No active NetBIOS sessions.") | Out-Null
    }
} catch {
    $result.AppendLine("  Could not query NetBIOS sessions.") | Out-Null
}

# Findings
$findings = [System.Collections.Generic.List[string]]::new()
try {
    $enabled = Get-WmiObject Win32_NetworkAdapterConfiguration -ErrorAction SilentlyContinue |
        Where-Object { $_.IPEnabled -and $_.TcpipNetbiosOptions -ne 2 }
    if ($enabled) {
        $findings.Add("NetBIOS over TCP/IP is enabled on $($enabled.Count) adapter(s) — potential attack surface if not required.")
    }
    $wins = Get-WmiObject Win32_NetworkAdapterConfiguration -ErrorAction SilentlyContinue |
        Where-Object { $_.WINSPrimaryServer }
    if ($wins) {
        $findings.Add("WINS server configured: $($wins[0].WINSPrimaryServer) — verify this is intentional.")
    }
} catch {}

$result.AppendLine("") | Out-Null
$result.AppendLine("=== Findings ===") | Out-Null
if ($findings.Count -eq 0) {
    $result.AppendLine("- NetBIOS configuration looks standard.") | Out-Null
} else {
    foreach ($f in $findings) { $result.AppendLine("- $f") | Out-Null }
}

Write-Output $result.ToString()
"#;
    let out = run_powershell(script)?;
    Ok(format!("Host inspection: netbios\n\n{out}"))
}

#[cfg(not(windows))]
fn inspect_netbios() -> Result<String, String> {
    let mut out = String::from("Host inspection: netbios\n\n=== NetBIOS (nmblookup) ===\n");
    if let Ok(o) = std::process::Command::new("nmblookup")
        .arg("-A")
        .arg("localhost")
        .output()
    {
        out.push_str(&String::from_utf8_lossy(&o.stdout));
    } else {
        out.push_str("  nmblookup not available (Samba not installed).\n");
    }
    Ok(out)
}

// ── NIC Teaming ──────────────────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_nic_teaming() -> Result<String, String> {
    let script = r#"
$result = [System.Text.StringBuilder]::new()

# Team inventory
$result.AppendLine("=== NIC teams ===") | Out-Null
try {
    $teams = Get-NetLbfoTeam -ErrorAction SilentlyContinue
    if ($teams) {
        foreach ($t in $teams) {
            $result.AppendLine("  Team: $($t.Name)") | Out-Null
            $result.AppendLine("    Mode:            $($t.TeamingMode)") | Out-Null
            $result.AppendLine("    LB Algorithm:    $($t.LoadBalancingAlgorithm)") | Out-Null
            $result.AppendLine("    Status:          $($t.Status)") | Out-Null
            $result.AppendLine("    Members:         $($t.Members -join ', ')") | Out-Null
            $result.AppendLine("    VLANs:           $($t.TransmitLinkSpeed / 1000000) Mbps TX / $($t.ReceiveLinkSpeed / 1000000) Mbps RX") | Out-Null
        }
    } else {
        $result.AppendLine("  No NIC teams configured on this machine.") | Out-Null
    }
} catch {
    $result.AppendLine("  Get-NetLbfoTeam unavailable (feature may not be installed).") | Out-Null
}

# Team members detail
$result.AppendLine("") | Out-Null
$result.AppendLine("=== Team member detail ===") | Out-Null
try {
    $members = Get-NetLbfoTeamMember -ErrorAction SilentlyContinue
    if ($members) {
        foreach ($m in $members) {
            $result.AppendLine("  [$($m.Team)] $($m.Name)  Role=$($m.AdministrativeMode)  Status=$($m.OperationalStatus)") | Out-Null
        }
    } else {
        $result.AppendLine("  No team members found.") | Out-Null
    }
} catch {
    $result.AppendLine("  Could not query team members.") | Out-Null
}

# Findings
$findings = [System.Collections.Generic.List[string]]::new()
try {
    $degraded = Get-NetLbfoTeam -ErrorAction SilentlyContinue | Where-Object { $_.Status -ne 'Up' }
    if ($degraded) {
        foreach ($d in $degraded) { $findings.Add("Team '$($d.Name)' is in degraded state: $($d.Status)") }
    }
    $downMembers = Get-NetLbfoTeamMember -ErrorAction SilentlyContinue | Where-Object { $_.OperationalStatus -ne 'Active' }
    if ($downMembers) {
        foreach ($m in $downMembers) { $findings.Add("Team member '$($m.Name)' in team '$($m.Team)' is not Active: $($m.OperationalStatus)") }
    }
} catch {}

$result.AppendLine("") | Out-Null
$result.AppendLine("=== Findings ===") | Out-Null
if ($findings.Count -eq 0) {
    $result.AppendLine("- NIC teaming state looks healthy (or no teams configured).") | Out-Null
} else {
    foreach ($f in $findings) { $result.AppendLine("- $f") | Out-Null }
}

Write-Output $result.ToString()
"#;
    let out = run_powershell(script)?;
    Ok(format!("Host inspection: nic_teaming\n\n{out}"))
}

#[cfg(not(windows))]
fn inspect_nic_teaming() -> Result<String, String> {
    let mut out = String::from("Host inspection: nic_teaming\n\n=== Bond interfaces ===\n");
    if let Ok(o) = std::process::Command::new("cat")
        .arg("/proc/net/bonding/bond0")
        .output()
    {
        if o.status.success() {
            out.push_str(&String::from_utf8_lossy(&o.stdout));
        } else {
            out.push_str("  No bond0 interface found.\n");
        }
    }
    if let Ok(o) = std::process::Command::new("ip")
        .args(["link", "show", "type", "bond"])
        .output()
    {
        let body = String::from_utf8_lossy(&o.stdout);
        if !body.trim().is_empty() {
            out.push_str("\n=== Bond links (ip link) ===\n");
            out.push_str(&body);
        }
    }
    Ok(out)
}

// ── SNMP ─────────────────────────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_snmp() -> Result<String, String> {
    let script = r#"
$result = [System.Text.StringBuilder]::new()

# SNMP service state
$result.AppendLine("=== SNMP service state ===") | Out-Null
$svc = Get-Service -Name 'SNMP' -ErrorAction SilentlyContinue
if ($svc) {
    $result.AppendLine("  SNMP Agent service: $($svc.Status) (Startup: $($svc.StartType))") | Out-Null
} else {
    $result.AppendLine("  SNMP Agent service not installed.") | Out-Null
}

$svcTrap = Get-Service -Name 'SNMPTRAP' -ErrorAction SilentlyContinue
if ($svcTrap) {
    $result.AppendLine("  SNMP Trap service:  $($svcTrap.Status) (Startup: $($svcTrap.StartType))") | Out-Null
}

# Community strings (presence only — values redacted)
$result.AppendLine("") | Out-Null
$result.AppendLine("=== SNMP community strings (presence only) ===") | Out-Null
try {
    $communities = Get-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Services\SNMP\Parameters\ValidCommunities' -ErrorAction SilentlyContinue
    if ($communities) {
        $names = $communities.PSObject.Properties | Where-Object { $_.Name -notmatch '^PS' } | Select-Object -ExpandProperty Name
        if ($names) {
            foreach ($n in $names) {
                $result.AppendLine("  Community: '$n'  (value redacted)") | Out-Null
            }
        } else {
            $result.AppendLine("  No community strings configured.") | Out-Null
        }
    } else {
        $result.AppendLine("  Registry key not found (SNMP may not be configured).") | Out-Null
    }
} catch {
    $result.AppendLine("  Could not read community strings (SNMP not configured or access denied).") | Out-Null
}

# Permitted managers
$result.AppendLine("") | Out-Null
$result.AppendLine("=== Permitted SNMP managers ===") | Out-Null
try {
    $managers = Get-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Services\SNMP\Parameters\PermittedManagers' -ErrorAction SilentlyContinue
    if ($managers) {
        $mgrs = $managers.PSObject.Properties | Where-Object { $_.Name -notmatch '^PS' } | Select-Object -ExpandProperty Value
        if ($mgrs) {
            foreach ($m in $mgrs) { $result.AppendLine("  $m") | Out-Null }
        } else {
            $result.AppendLine("  No permitted managers configured (accepts from any host).") | Out-Null
        }
    } else {
        $result.AppendLine("  No manager restrictions configured.") | Out-Null
    }
} catch {
    $result.AppendLine("  Could not read permitted managers.") | Out-Null
}

# Findings
$findings = [System.Collections.Generic.List[string]]::new()
$snmpSvc = Get-Service -Name 'SNMP' -ErrorAction SilentlyContinue
if ($snmpSvc -and $snmpSvc.Status -eq 'Running') {
    $findings.Add("SNMP Agent is running — verify community strings and permitted managers are locked down.")
    try {
        $comms = Get-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Services\SNMP\Parameters\ValidCommunities' -ErrorAction SilentlyContinue
        $publicExists = $comms.PSObject.Properties | Where-Object { $_.Name -eq 'public' }
        if ($publicExists) { $findings.Add("Community string 'public' is configured — this is a well-known default and a security risk.") }
    } catch {}
}

$result.AppendLine("") | Out-Null
$result.AppendLine("=== Findings ===") | Out-Null
if ($findings.Count -eq 0) {
    $result.AppendLine("- SNMP agent is not running (or not installed). No exposure.") | Out-Null
} else {
    foreach ($f in $findings) { $result.AppendLine("- $f") | Out-Null }
}

Write-Output $result.ToString()
"#;
    let out = run_powershell(script)?;
    Ok(format!("Host inspection: snmp\n\n{out}"))
}

#[cfg(not(windows))]
fn inspect_snmp() -> Result<String, String> {
    let mut out = String::from("Host inspection: snmp\n\n=== SNMP daemon state ===\n");
    for svc in &["snmpd", "snmp"] {
        if let Ok(o) = std::process::Command::new("systemctl")
            .args(["is-active", svc])
            .output()
        {
            let status = String::from_utf8_lossy(&o.stdout).trim().to_string();
            let _ = write!(out, "  {svc}: {status}\n");
        }
    }
    out.push_str("\n=== snmpd.conf community strings (presence check) ===\n");
    if let Ok(o) = std::process::Command::new("grep")
        .args(["-i", "community", "/etc/snmp/snmpd.conf"])
        .output()
    {
        if o.status.success() {
            for line in String::from_utf8_lossy(&o.stdout).lines() {
                let _ = write!(out, "  {line}\n");
            }
        } else {
            out.push_str("  /etc/snmp/snmpd.conf not found or no community lines.\n");
        }
    }
    Ok(out)
}

// ── Port Test ─────────────────────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_port_test(host: Option<&str>, port: Option<u16>) -> Result<String, String> {
    let target_host = host.unwrap_or("8.8.8.8");
    let target_port = port.unwrap_or(443);

    let script = format!(
        r#"
$result = [System.Text.StringBuilder]::new()
$result.AppendLine("=== Port reachability test ===") | Out-Null
$result.AppendLine("  Target: {target_host}:{target_port}") | Out-Null
$result.AppendLine("") | Out-Null

try {{
    $test = Test-NetConnection -ComputerName '{target_host}' -Port {target_port} -WarningAction SilentlyContinue -ErrorAction SilentlyContinue
    if ($test) {{
        $status = if ($test.TcpTestSucceeded) {{ "OPEN (reachable)" }} else {{ "CLOSED or FILTERED" }}
        $result.AppendLine("  Result:          $status") | Out-Null
        $result.AppendLine("  Remote address:  $($test.RemoteAddress)") | Out-Null
        $result.AppendLine("  Remote port:     $($test.RemotePort)") | Out-Null
        if ($test.PingSucceeded) {{
            $result.AppendLine("  ICMP ping:       Succeeded ($($test.PingReplyDetails.RoundtripTime) ms)") | Out-Null
        }} else {{
            $result.AppendLine("  ICMP ping:       Failed (host may block ICMP)") | Out-Null
        }}
        $result.AppendLine("  Interface used:  $($test.InterfaceAlias)") | Out-Null
        $result.AppendLine("  Source address:  $($test.SourceAddress.IPAddress)") | Out-Null

        $result.AppendLine("") | Out-Null
        $result.AppendLine("=== Findings ===") | Out-Null
        if ($test.TcpTestSucceeded) {{
            $result.AppendLine("- Port {target_port} on {target_host} is OPEN — TCP handshake succeeded.") | Out-Null
        }} else {{
            $result.AppendLine("- Port {target_port} on {target_host} is CLOSED or FILTERED — TCP handshake failed.") | Out-Null
            $result.AppendLine("  Check: firewall rules, route to host, or service not listening on that port.") | Out-Null
        }}
    }}
}} catch {{
    $result.AppendLine("  Test-NetConnection failed: $($_.Exception.Message)") | Out-Null
}}

Write-Output $result.ToString()
"#
    );
    let out = run_powershell(&script)?;
    Ok(format!("Host inspection: port_test\n\n{out}"))
}

#[cfg(not(windows))]
fn inspect_port_test(host: Option<&str>, port: Option<u16>) -> Result<String, String> {
    let target_host = host.unwrap_or("8.8.8.8");
    let target_port = port.unwrap_or(443);
    let mut out = format!("Host inspection: port_test\n\n=== Port reachability test ===\n  Target: {target_host}:{target_port}\n\n");
    // nc -zv with timeout
    let nc = std::process::Command::new("nc")
        .args(["-zv", "-w", "3", target_host, &target_port.to_string()])
        .output();
    match nc {
        Ok(o) => {
            let stderr = String::from_utf8_lossy(&o.stderr);
            let stdout = String::from_utf8_lossy(&o.stdout);
            let body = if !stdout.trim().is_empty() {
                stdout.as_ref()
            } else {
                stderr.as_ref()
            };
            let _ = write!(out, "  {}\n", body.trim());
            out.push_str("\n=== Findings ===\n");
            if o.status.success() {
                let _ = write!(out, "- Port {target_port} on {target_host} is OPEN.\n");
            } else {
                let _ = write!(
                    out,
                    "- Port {target_port} on {target_host} is CLOSED or FILTERED.\n"
                );
            }
        }
        Err(e) => {
            let _ = write!(out, "  nc not available: {e}\n");
        }
    }
    Ok(out)
}

// ── Network Profile ───────────────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_network_profile() -> Result<String, String> {
    let script = r#"
$result = [System.Text.StringBuilder]::new()

$result.AppendLine("=== Network location profiles ===") | Out-Null
try {
    $profiles = Get-NetConnectionProfile -ErrorAction SilentlyContinue
    if ($profiles) {
        foreach ($p in $profiles) {
            $result.AppendLine("  Interface: $($p.InterfaceAlias)") | Out-Null
            $result.AppendLine("    Network name:    $($p.Name)") | Out-Null
            $result.AppendLine("    Category:        $($p.NetworkCategory)") | Out-Null
            $result.AppendLine("    IPv4 conn:       $($p.IPv4Connectivity)") | Out-Null
            $result.AppendLine("    IPv6 conn:       $($p.IPv6Connectivity)") | Out-Null
            $result.AppendLine("") | Out-Null
        }
    } else {
        $result.AppendLine("  No network connection profiles found.") | Out-Null
    }
} catch {
    $result.AppendLine("  Could not query network profiles.") | Out-Null
}

# Findings
$findings = [System.Collections.Generic.List[string]]::new()
try {
    $pub = Get-NetConnectionProfile -ErrorAction SilentlyContinue | Where-Object { $_.NetworkCategory -eq 'Public' }
    if ($pub) {
        foreach ($p in $pub) {
            $findings.Add("Interface '$($p.InterfaceAlias)' is set to Public — firewall restrictions are maximum. Change to Private if this is a trusted network.")
        }
    }
    $domain = Get-NetConnectionProfile -ErrorAction SilentlyContinue | Where-Object { $_.NetworkCategory -eq 'DomainAuthenticated' }
    if ($domain) {
        foreach ($d in $domain) {
            $findings.Add("Interface '$($d.InterfaceAlias)' is domain-authenticated — domain GPO firewall rules apply.")
        }
    }
} catch {}

$result.AppendLine("=== Findings ===") | Out-Null
if ($findings.Count -eq 0) {
    $result.AppendLine("- Network profiles look normal.") | Out-Null
} else {
    foreach ($f in $findings) { $result.AppendLine("- $f") | Out-Null }
}

Write-Output $result.ToString()
"#;
    let out = run_powershell(script)?;
    Ok(format!("Host inspection: network_profile\n\n{out}"))
}

#[cfg(not(windows))]
fn inspect_network_profile() -> Result<String, String> {
    let mut out = String::from(
        "Host inspection: network_profile\n\n=== Network manager connection profiles ===\n",
    );
    if let Ok(o) = std::process::Command::new("nmcli")
        .args([
            "-t",
            "-f",
            "NAME,TYPE,STATE,DEVICE",
            "connection",
            "show",
            "--active",
        ])
        .output()
    {
        out.push_str(&String::from_utf8_lossy(&o.stdout));
    } else {
        out.push_str("  nmcli not available.\n");
    }
    Ok(out)
}

// ── Storage Spaces ────────────────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_storage_spaces() -> Result<String, String> {
    let script = r#"
$result = [System.Text.StringBuilder]::new()

# Storage Pools
try {
    $pools = Get-StoragePool -IsPrimordial $false -ErrorAction SilentlyContinue
    if ($pools) {
        $result.AppendLine("=== Storage Pools ===") | Out-Null
        foreach ($pool in $pools) {
            $health = $pool.HealthStatus
            $oper   = $pool.OperationalStatus
            $sizGB  = [math]::Round($pool.Size / 1GB, 1)
            $allocGB= [math]::Round($pool.AllocatedSize / 1GB, 1)
            $result.AppendLine("  Pool: $($pool.FriendlyName)  Size: ${sizGB}GB  Allocated: ${allocGB}GB  Health: $health  Status: $oper") | Out-Null
        }
        $result.AppendLine("") | Out-Null
    } else {
        $result.AppendLine("=== Storage Pools ===") | Out-Null
        $result.AppendLine("  No Storage Spaces pools configured.") | Out-Null
        $result.AppendLine("") | Out-Null
    }
} catch {
    $result.AppendLine("=== Storage Pools ===") | Out-Null
    $result.AppendLine("  Unable to query storage pools (may require elevation).") | Out-Null
    $result.AppendLine("") | Out-Null
}

# Virtual Disks
try {
    $vdisks = Get-VirtualDisk -ErrorAction SilentlyContinue
    if ($vdisks) {
        $result.AppendLine("=== Virtual Disks ===") | Out-Null
        foreach ($vd in $vdisks) {
            $health  = $vd.HealthStatus
            $oper    = $vd.OperationalStatus
            $layout  = $vd.ResiliencySettingName
            $sizGB   = [math]::Round($vd.Size / 1GB, 1)
            $result.AppendLine("  VDisk: $($vd.FriendlyName)  Layout: $layout  Size: ${sizGB}GB  Health: $health  Status: $oper") | Out-Null
        }
        $result.AppendLine("") | Out-Null
    } else {
        $result.AppendLine("=== Virtual Disks ===") | Out-Null
        $result.AppendLine("  No Storage Spaces virtual disks configured.") | Out-Null
        $result.AppendLine("") | Out-Null
    }
} catch {
    $result.AppendLine("=== Virtual Disks ===") | Out-Null
    $result.AppendLine("  Unable to query virtual disks.") | Out-Null
    $result.AppendLine("") | Out-Null
}

# Physical Disks in pools
try {
    $pdisks = Get-PhysicalDisk -ErrorAction SilentlyContinue | Where-Object { $_.Usage -ne 'Journal' }
    if ($pdisks) {
        $result.AppendLine("=== Physical Disks ===") | Out-Null
        foreach ($pd in $pdisks) {
            $sizGB  = [math]::Round($pd.Size / 1GB, 1)
            $health = $pd.HealthStatus
            $usage  = $pd.Usage
            $media  = $pd.MediaType
            $result.AppendLine("  $($pd.FriendlyName)  ${sizGB}GB  $media  Usage: $usage  Health: $health") | Out-Null
        }
        $result.AppendLine("") | Out-Null
    }
} catch {}

# Findings
$findings = @()
try {
    $unhealthy = Get-StoragePool -IsPrimordial $false -ErrorAction SilentlyContinue | Where-Object { $_.HealthStatus -ne 'Healthy' }
    foreach ($p in $unhealthy) { $findings += "WARN: Pool '$($p.FriendlyName)' health is $($p.HealthStatus)" }
    $degraded = Get-VirtualDisk -ErrorAction SilentlyContinue | Where-Object { $_.HealthStatus -ne 'Healthy' }
    foreach ($v in $degraded) { $findings += "WARN: VDisk '$($v.FriendlyName)' health is $($v.HealthStatus) — check for failed drives" }
    $failedPd = Get-PhysicalDisk -ErrorAction SilentlyContinue | Where-Object { $_.HealthStatus -eq 'Unhealthy' -or $_.OperationalStatus -eq 'Lost Communication' }
    foreach ($d in $failedPd) { $findings += "CRITICAL: Physical disk '$($d.FriendlyName)' is $($d.HealthStatus) / $($d.OperationalStatus)" }
} catch {}

if ($findings.Count -gt 0) {
    $result.AppendLine("=== Findings ===") | Out-Null
    foreach ($f in $findings) { $result.AppendLine("  $f") | Out-Null }
} else {
    $result.AppendLine("=== Findings ===") | Out-Null
    $result.AppendLine("  All storage pool components healthy (or no Storage Spaces configured).") | Out-Null
}

Write-Output $result.ToString().TrimEnd()
"#;
    let out = run_powershell(script)?;
    Ok(format!("Host inspection: storage_spaces\n\n{out}"))
}

#[cfg(not(windows))]
fn inspect_storage_spaces() -> Result<String, String> {
    let mut out = String::from("Host inspection: storage_spaces\n\n");
    // Linux: check mdadm software RAID
    let mdstat = std::fs::read_to_string("/proc/mdstat").unwrap_or_default();
    if !mdstat.is_empty() {
        out.push_str("=== Software RAID (/proc/mdstat) ===\n");
        out.push_str(&mdstat);
    } else {
        out.push_str("No mdadm software RAID detected (/proc/mdstat not found or empty).\n");
    }
    // Check LVM
    if let Ok(o) = Command::new("lvs")
        .args(["--noheadings", "-o", "lv_name,vg_name,lv_size,lv_attr"])
        .output()
    {
        let lvs = String::from_utf8_lossy(&o.stdout).into_owned();
        if !lvs.trim().is_empty() {
            out.push_str("\n=== LVM Logical Volumes ===\n");
            out.push_str(&lvs);
        }
    }
    Ok(out)
}

// ── Defender Quarantine / Threat History ─────────────────────────────────────

#[cfg(windows)]
fn inspect_defender_quarantine(max_entries: usize) -> Result<String, String> {
    let limit = max_entries.min(50);
    let script = format!(
        r#"
$result = [System.Text.StringBuilder]::new()

# Current threat detections (active + quarantined)
try {{
    $threats = Get-MpThreatDetection -ErrorAction SilentlyContinue | Sort-Object InitialDetectionTime -Descending | Select-Object -First {limit}
    if ($threats) {{
        $result.AppendLine("=== Recent Threat Detections (last {limit}) ===") | Out-Null
        foreach ($t in $threats) {{
            $name    = (Get-MpThreat -ThreatID $t.ThreatID -ErrorAction SilentlyContinue).ThreatName
            if (-not $name) {{ $name = "ID:$($t.ThreatID)" }}
            $time    = $t.InitialDetectionTime.ToString("yyyy-MM-dd HH:mm")
            $action  = $t.ActionSuccess
            $status  = $t.CurrentThreatExecutionStatusID
            $result.AppendLine("  [$time] $name  ActionSuccess:$action  Status:$status") | Out-Null
        }}
        $result.AppendLine("") | Out-Null
    }} else {{
        $result.AppendLine("=== Recent Threat Detections ===") | Out-Null
        $result.AppendLine("  No threat detections on record — Defender history is clean.") | Out-Null
        $result.AppendLine("") | Out-Null
    }}
}} catch {{
    $result.AppendLine("=== Recent Threat Detections ===") | Out-Null
    $result.AppendLine("  Unable to query threat detections: $_") | Out-Null
    $result.AppendLine("") | Out-Null
}}

# Quarantine items
try {{
    $quarantine = Get-MpThreat -ErrorAction SilentlyContinue | Where-Object {{ $_.IsActive -eq $false }} | Select-Object -First {limit}
    if ($quarantine) {{
        $result.AppendLine("=== Quarantined / Remediated Threats ===") | Out-Null
        foreach ($q in $quarantine) {{
            $result.AppendLine("  $($q.ThreatName)  Severity:$($q.SeverityID)  Category:$($q.CategoryID)  Active:$($q.IsActive)") | Out-Null
        }}
        $result.AppendLine("") | Out-Null
    }} else {{
        $result.AppendLine("=== Quarantined / Remediated Threats ===") | Out-Null
        $result.AppendLine("  No quarantined threats found.") | Out-Null
        $result.AppendLine("") | Out-Null
    }}
}} catch {{
    $result.AppendLine("=== Quarantined / Remediated Threats ===") | Out-Null
    $result.AppendLine("  Unable to query quarantine list: $_") | Out-Null
    $result.AppendLine("") | Out-Null
}}

# Defender scan stats
try {{
    $status = Get-MpComputerStatus -ErrorAction SilentlyContinue
    if ($status) {{
        $lastScan   = $status.QuickScanStartTime
        $lastFull   = $status.FullScanStartTime
        $sigDate    = $status.AntivirusSignatureLastUpdated
        $result.AppendLine("=== Defender Scan Summary ===") | Out-Null
        $result.AppendLine("  Last quick scan : $lastScan") | Out-Null
        $result.AppendLine("  Last full scan  : $lastFull") | Out-Null
        $result.AppendLine("  Signature date  : $sigDate") | Out-Null
    }}
}} catch {{}}

Write-Output $result.ToString().TrimEnd()
"#,
        limit = limit
    );
    let out = run_powershell(&script)?;
    Ok(format!("Host inspection: defender_quarantine\n\n{out}"))
}

// ── inspect_domain_health ─────────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_domain_health() -> Result<String, String> {
    let script = r#"
$result = [System.Text.StringBuilder]::new()

# Domain membership
try {
    $cs = Get-CimInstance Win32_ComputerSystem -ErrorAction Stop
    $joined = $cs.PartOfDomain
    $domain = $cs.Domain
    $result.AppendLine("=== Domain Membership ===") | Out-Null
    $result.AppendLine("  Join Status : $(if ($joined) { 'DOMAIN JOINED' } else { 'WORKGROUP' })") | Out-Null
    if ($joined) { $result.AppendLine("  Domain      : $domain") | Out-Null }
    $result.AppendLine("  Computer    : $($cs.Name)") | Out-Null
} catch {
    $result.AppendLine("  Domain membership check failed: $_") | Out-Null
}

# dsregcmd device registration state
try {
    $dsreg = dsregcmd /status 2>&1 | Where-Object { $_ -match '(AzureAdJoined|DomainJoined|WorkplaceJoined|TenantName|DeviceId|MdmUrl)' }
    if ($dsreg) {
        $result.AppendLine("") | Out-Null
        $result.AppendLine("=== Device Registration (dsregcmd) ===") | Out-Null
        foreach ($line in $dsreg) { $result.AppendLine("  $($line.Trim())") | Out-Null }
    }
} catch {}

# DC discovery via nltest
$result.AppendLine("") | Out-Null
$result.AppendLine("=== Domain Controller Discovery ===") | Out-Null
try {
    $nl = nltest /dsgetdc:. 2>&1
    $dc_name = $null
    foreach ($line in $nl) {
        if ($line -match '(DC:|Address:|Dom Guid|DomainName)') {
            $result.AppendLine("  $($line.Trim())") | Out-Null
        }
        if ($line -match 'DC: \\\\(.+)') { $dc_name = $Matches[1].Trim() }
    }
    if ($dc_name) {
        $result.AppendLine("") | Out-Null
        $result.AppendLine("=== DC Port Connectivity (DC: $dc_name) ===") | Out-Null
        foreach ($entry in @(@{p=389;n='LDAP'},@{p=636;n='LDAPS'},@{p=88;n='Kerberos'},@{p=3268;n='GC-LDAP'})) {
            try {
                $tcp = New-Object System.Net.Sockets.TcpClient
                $conn = $tcp.BeginConnect($dc_name, $entry.p, $null, $null)
                $ok = $conn.AsyncWaitHandle.WaitOne(1200, $false)
                $tcp.Close()
                $status = if ($ok) { 'OPEN' } else { 'TIMEOUT' }
            } catch { $status = 'FAILED' }
            $result.AppendLine("  Port $($entry.p) ($($entry.n)): $status") | Out-Null
        }
    }
} catch {
    $result.AppendLine("  nltest unavailable (not domain-joined or missing RSAT): $_") | Out-Null
}

# Last GPO machine refresh time
try {
    $gpoKey = 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Group Policy\State\Machine\Extension-List\{00000000-0000-0000-0000-000000000000}'
    if (Test-Path $gpoKey) {
        $gpo = Get-ItemProperty $gpoKey -ErrorAction SilentlyContinue
        $result.AppendLine("") | Out-Null
        $result.AppendLine("=== Group Policy Last Refresh ===") | Out-Null
        $result.AppendLine("  Machine GPO last applied: $($gpo.EndTime)") | Out-Null
    }
} catch {}

Write-Output $result.ToString().TrimEnd()
"#;
    let out = run_powershell(script)?;
    Ok(format!("Host inspection: domain_health\n\n{out}"))
}

#[cfg(not(windows))]
fn inspect_domain_health() -> Result<String, String> {
    let mut out = String::from("Host inspection: domain_health\n\n");
    for cmd_args in &[vec!["realm", "list"], vec!["sssd", "--version"]] {
        if let Ok(o) = Command::new(cmd_args[0]).args(&cmd_args[1..]).output() {
            let s = String::from_utf8_lossy(&o.stdout);
            if !s.trim().is_empty() {
                let _ = write!(out, "$ {}\n{}\n", cmd_args.join(" "), s.trim_end());
            }
        }
    }
    if out.trim_end().ends_with("domain_health") {
        out.push_str("Not domain-joined or realm/sssd not installed.\n");
    }
    Ok(out)
}

// ── inspect_service_dependencies ─────────────────────────────────────────────

#[cfg(windows)]
fn inspect_service_dependencies(max_entries: usize) -> Result<String, String> {
    let limit = max_entries.min(60);
    let script = format!(
        r#"
$result = [System.Text.StringBuilder]::new()
$result.AppendLine("=== Service Dependency Graph ===") | Out-Null
$result.AppendLine("Format: [Status] ServiceName — requires: ... | needed by: ...") | Out-Null
$result.AppendLine("") | Out-Null
$svc = Get-Service | Where-Object {{ $_.DependentServices.Count -gt 0 -or $_.RequiredServices.Count -gt 0 }} | Sort-Object Name | Select-Object -First {limit}
foreach ($s in $svc) {{
    $req  = if ($s.RequiredServices.Count  -gt 0) {{ "requires: $($s.RequiredServices.Name  -join ', ')" }} else {{ "" }}
    $dep  = if ($s.DependentServices.Count -gt 0) {{ "needed by: $($s.DependentServices.Name -join ', ')" }} else {{ "" }}
    $parts = @($req, $dep) | Where-Object {{ $_ }}
    if ($parts) {{
        $result.AppendLine("  [$($s.Status)] $($s.Name) — $($parts -join ' | ')") | Out-Null
    }}
}}
Write-Output $result.ToString().TrimEnd()
"#,
        limit = limit
    );
    let out = run_powershell(&script)?;
    Ok(format!("Host inspection: service_dependencies\n\n{out}"))
}

#[cfg(not(windows))]
fn inspect_service_dependencies(_max_entries: usize) -> Result<String, String> {
    let out = Command::new("systemctl")
        .args(["list-dependencies", "--no-pager", "--plain"])
        .output()
        .ok()
        .and_then(|o| String::from_utf8(o.stdout).ok())
        .unwrap_or_else(|| "systemctl not available.\n".to_string());
    Ok(format!(
        "Host inspection: service_dependencies\n\n{}",
        out.trim_end()
    ))
}

// ── inspect_wmi_health ────────────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_wmi_health() -> Result<String, String> {
    let script = r#"
$result = [System.Text.StringBuilder]::new()
$result.AppendLine("=== WMI Repository Health ===") | Out-Null

# Basic WMI query test
try {
    $os = Get-CimInstance Win32_OperatingSystem -ErrorAction Stop
    $result.AppendLine("  Query (Win32_OperatingSystem): OK") | Out-Null
    $result.AppendLine("  OS: $($os.Caption) Build $($os.BuildNumber)") | Out-Null
} catch {
    $result.AppendLine("  Query FAILED: $_") | Out-Null
    $result.AppendLine("  FINDING: WMI may be corrupt. Run winmgmt /verifyrepository") | Out-Null
}

# Repository integrity
try {
    $verify = & winmgmt /verifyrepository 2>&1
    $result.AppendLine("  winmgmt /verifyrepository: $verify") | Out-Null
} catch {
    $result.AppendLine("  winmgmt check unavailable: $_") | Out-Null
}

# WMI service state
$svc = Get-Service winmgmt -ErrorAction SilentlyContinue
if ($svc) {
    $result.AppendLine("  Service (winmgmt): $($svc.Status) / $($svc.StartType)") | Out-Null
}

# Repository folder size
$repPath = "$env:SystemRoot\System32\wbem\Repository"
if (Test-Path $repPath) {
    $bytes = (Get-ChildItem $repPath -Recurse -ErrorAction SilentlyContinue | Measure-Object Length -Sum).Sum
    $mb = [math]::Round($bytes / 1MB, 1)
    $result.AppendLine("  Repository size: $mb MB  ($repPath)") | Out-Null
    if ($mb -gt 200) {
        $result.AppendLine("  FINDING: Repository is unusually large (>200 MB). May indicate corruption or bloat.") | Out-Null
    }
}

$result.AppendLine("") | Out-Null
$result.AppendLine("=== Recovery Steps (if corrupt) ===") | Out-Null
$result.AppendLine("  1. net stop winmgmt") | Out-Null
$result.AppendLine("  2. winmgmt /salvagerepository   (try first)") | Out-Null
$result.AppendLine("  3. winmgmt /resetrepository     (last resort — loses custom namespaces)") | Out-Null
$result.AppendLine("  4. net start winmgmt") | Out-Null

Write-Output $result.ToString().TrimEnd()
"#;
    let out = run_powershell(script)?;
    Ok(format!("Host inspection: wmi_health\n\n{out}"))
}

#[cfg(not(windows))]
fn inspect_wmi_health() -> Result<String, String> {
    Ok("Host inspection: wmi_health\n\nWMI is Windows-only. On Linux use 'systemctl status' for service health.\n".to_string())
}

// ── inspect_local_security_policy ────────────────────────────────────────────

#[cfg(windows)]
fn inspect_local_security_policy() -> Result<String, String> {
    let script = r#"
$result = [System.Text.StringBuilder]::new()
$result.AppendLine("=== Local Account & Password Policy ===") | Out-Null
$na = net accounts 2>&1
foreach ($line in $na) {
    if ($line -match '(password|lockout|observation|force|maximum|minimum|length|duration)') {
        $result.AppendLine("  $($line.Trim())") | Out-Null
    }
}

$result.AppendLine("") | Out-Null
$result.AppendLine("=== LAN Manager / NTLM Authentication Level ===") | Out-Null
try {
    $lmLevel = (Get-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Control\Lsa' -Name LmCompatibilityLevel -ErrorAction SilentlyContinue).LmCompatibilityLevel
    if ($null -eq $lmLevel) { $lmLevel = 3 }
    $map = @{0='Send LM+NTLM'; 1='LM+NTLMv2 if negotiated'; 2='Send NTLM only'; 3='Send NTLMv2 only (default)'; 4='DC refuses LM'; 5='DC refuses LM+NTLM'}
    $result.AppendLine("  LmCompatibilityLevel: $lmLevel — $($map[$lmLevel])") | Out-Null
    if ($lmLevel -lt 3) {
        $result.AppendLine("  FINDING: LmCompatibilityLevel < 3 allows weak LM/NTLM. Recommend level 3 or higher.") | Out-Null
    }
} catch {}

$result.AppendLine("") | Out-Null
$result.AppendLine("=== UAC Settings ===") | Out-Null
try {
    $uac = Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System' -ErrorAction SilentlyContinue
    if ($uac) {
        $result.AppendLine("  UAC Enabled             : $($uac.EnableLUA)   (1=on, 0=disabled)") | Out-Null
        $behavMap = @{0='No prompt (risk)'; 1='Prompt for creds'; 2='Prompt for consent'; 5='Secure consent (default)'}
        $bval = $uac.ConsentPromptBehaviorAdmin
        $result.AppendLine("  Admin Prompt Behavior   : $bval — $($behavMap[$bval])") | Out-Null
        if ($uac.EnableLUA -eq 0) {
            $result.AppendLine("  FINDING: UAC is disabled. Processes run with full admin rights without prompting.") | Out-Null
        }
    }
} catch {}

Write-Output $result.ToString().TrimEnd()
"#;
    let out = run_powershell(script)?;
    Ok(format!("Host inspection: local_security_policy\n\n{out}"))
}

#[cfg(not(windows))]
fn inspect_local_security_policy() -> Result<String, String> {
    let mut out = String::from("Host inspection: local_security_policy\n\n");
    if let Ok(content) = std::fs::read_to_string("/etc/login.defs") {
        out.push_str("=== /etc/login.defs ===\n");
        for line in content.lines() {
            let t = line.trim();
            if !t.is_empty() && !t.starts_with('#') {
                let _ = write!(out, "  {t}\n");
            }
        }
    }
    Ok(out)
}

// ── inspect_usb_history ───────────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_usb_history(max_entries: usize) -> Result<String, String> {
    let limit = max_entries.min(50);
    let script = format!(
        r#"
$result = [System.Text.StringBuilder]::new()
$result.AppendLine("=== USB Device History (USBSTOR Registry) ===") | Out-Null
$usbPath = 'HKLM:\SYSTEM\CurrentControlSet\Enum\USBSTOR'
if (Test-Path $usbPath) {{
    $count = 0
    $seen = @{{}}
    $classes = Get-ChildItem $usbPath -ErrorAction SilentlyContinue
    foreach ($class in $classes) {{
        $instances = Get-ChildItem $class.PSPath -ErrorAction SilentlyContinue
        foreach ($inst in $instances) {{
            if ($count -ge {limit}) {{ break }}
            try {{
                $props = Get-ItemProperty $inst.PSPath -ErrorAction SilentlyContinue
                $fn = if ($props.FriendlyName) {{ $props.FriendlyName }} else {{ $class.PSChildName }}
                if (-not $seen[$fn]) {{
                    $seen[$fn] = $true
                    $result.AppendLine("  $fn") | Out-Null
                    $count++
                }}
            }} catch {{}}
        }}
    }}
    if ($count -eq 0) {{
        $result.AppendLine("  No USB storage devices found in registry.") | Out-Null
    }} else {{
        $result.AppendLine("") | Out-Null
        $result.AppendLine("  ($count unique devices; requires elevation for full history)") | Out-Null
    }}
}} else {{
    $result.AppendLine("  USBSTOR key not found. Requires elevation or USB storage policy may block it.") | Out-Null
}}
Write-Output $result.ToString().TrimEnd()
"#,
        limit = limit
    );
    let out = run_powershell(&script)?;
    Ok(format!("Host inspection: usb_history\n\n{out}"))
}

#[cfg(not(windows))]
fn inspect_usb_history(_max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: usb_history\n\n");
    if let Ok(o) = Command::new("journalctl")
        .args(["-k", "--no-pager", "-q", "--since", "30 days ago"])
        .output()
    {
        let s = String::from_utf8_lossy(&o.stdout);
        let usb_lines: Vec<&str> = s
            .lines()
            .filter(|l| l.to_ascii_lowercase().contains("usb"))
            .take(30)
            .collect();
        if !usb_lines.is_empty() {
            out.push_str("=== Recent USB kernel events (journalctl) ===\n");
            for line in usb_lines {
                let _ = write!(out, "  {line}\n");
            }
        }
    } else {
        out.push_str("USB history via journalctl not available.\n");
    }
    Ok(out)
}

// ── inspect_print_spooler ─────────────────────────────────────────────────────

#[cfg(windows)]
fn inspect_print_spooler() -> Result<String, String> {
    let script = r#"
$result = [System.Text.StringBuilder]::new()

$svc = Get-Service Spooler -ErrorAction SilentlyContinue
$result.AppendLine("=== Print Spooler Service ===") | Out-Null
if ($svc) {
    $result.AppendLine("  Status     : $($svc.Status)") | Out-Null
    $result.AppendLine("  Start Type : $($svc.StartType)") | Out-Null
} else {
    $result.AppendLine("  Spooler service not found.") | Out-Null
}

# PrintNightmare mitigations (CVE-2021-34527)
$result.AppendLine("") | Out-Null
$result.AppendLine("=== PrintNightmare Hardening (CVE-2021-34527) ===") | Out-Null
try {
    $val = (Get-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Control\Print' -Name RpcAuthnLevelPrivacyEnabled -ErrorAction SilentlyContinue).RpcAuthnLevelPrivacyEnabled
    if ($val -eq 1) {
        $result.AppendLine("  RpcAuthnLevelPrivacyEnabled: 1 — HARDENED (good)") | Out-Null
    } else {
        $result.AppendLine("  RpcAuthnLevelPrivacyEnabled: $val — NOT hardened") | Out-Null
        $result.AppendLine("  FINDING: PrintNightmare RPC mitigation not applied. Set to 1 via registry.") | Out-Null
    }
} catch { $result.AppendLine("  Mitigation key not readable: $_") | Out-Null }

try {
    $pnpPath = 'HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\Printers\PointAndPrint'
    if (Test-Path $pnpPath) {
        $pnp = Get-ItemProperty $pnpPath -ErrorAction SilentlyContinue
        $result.AppendLine("  RestrictDriverInstallationToAdministrators: $($pnp.RestrictDriverInstallationToAdministrators)") | Out-Null
        $result.AppendLine("  NoWarningNoElevationOnInstall              : $($pnp.NoWarningNoElevationOnInstall)") | Out-Null
        if ($pnp.NoWarningNoElevationOnInstall -eq 1) {
            $result.AppendLine("  FINDING: Point and Print allows silent driver install without elevation (risk).") | Out-Null
        }
    } else {
        $result.AppendLine("  No Point and Print policy (using Windows defaults).") | Out-Null
    }
} catch {}

# Pending print jobs
$result.AppendLine("") | Out-Null
$result.AppendLine("=== Print Queue ===") | Out-Null
try {
    $jobs = Get-PrintJob -ErrorAction SilentlyContinue
    if ($jobs) {
        foreach ($j in $jobs | Select-Object -First 5) {
            $result.AppendLine("  $($j.DocumentName) — $($j.JobStatus)") | Out-Null
        }
    } else {
        $result.AppendLine("  No pending print jobs.") | Out-Null
    }
} catch {
    $result.AppendLine("  Print queue check requires elevation.") | Out-Null
}

Write-Output $result.ToString().TrimEnd()
"#;
    let out = run_powershell(script)?;
    Ok(format!("Host inspection: print_spooler\n\n{out}"))
}

#[cfg(not(windows))]
fn inspect_print_spooler() -> Result<String, String> {
    let mut out = String::from("Host inspection: print_spooler\n\n");
    if let Ok(o) = Command::new("lpstat").args(["-s"]).output() {
        let s = String::from_utf8_lossy(&o.stdout);
        if !s.trim().is_empty() {
            out.push_str("=== CUPS Status (lpstat -s) ===\n");
            out.push_str(s.trim_end());
            out.push('\n');
        }
    } else {
        out.push_str("CUPS not detected (lpstat not found).\n");
    }
    Ok(out)
}

#[cfg(not(windows))]
fn inspect_defender_quarantine(_max_entries: usize) -> Result<String, String> {
    let mut out = String::from("Host inspection: defender_quarantine\n\n");
    out.push_str("Windows Defender is Windows-only.\n");
    // Check ClamAV on Linux/macOS
    if let Ok(o) = Command::new("clamscan").arg("--version").output() {
        if o.status.success() {
            out.push_str("\nClamAV detected. Run `clamscan -r --infected /path` for a scan.\n");
            if let Ok(log) = std::fs::read_to_string("/var/log/clamav/clamav.log") {
                out.push_str("\n=== ClamAV Recent Log ===\n");
                for line in log.lines().rev().take(20) {
                    let _ = write!(out, "  {line}\n");
                }
            }
        }
    } else {
        out.push_str("No AV tool detected (ClamAV not found).\n");
    }
    Ok(out)
}