imp-core 0.2.0

use std::path::{Path, PathBuf};
use std::sync::Arc;
use std::time::{Duration, Instant};

use async_trait::async_trait;
use mana::commands::agents::{agents_file_path, load_agents};
use mana::commands::logs::find_all_logs;
use mana::commands::next::ScoredUnit;
use mana::commands::run::{NativeRunParams, RunSummary, RunTarget, RunUnitStatus, RunView};
use mana::stream::{self, StreamEvent};
use mana_core::ops::claim::ClaimParams;
use mana_core::ops::run as mana_run_core;
use mana_core::unit::{OnFailAction, UnitType};
use serde::{Deserialize, Serialize};
use serde_json::json;

use super::{truncate_head, Tool, ToolContext, ToolOutput};
use crate::error::Result;
use crate::mana_worker::{self, WorkerRunOptions, WorkerStatus};
use crate::ui::{NotifyLevel, WidgetContent};
const MAX_OUTPUT_LINES: usize = 2000;
const MAX_OUTPUT_BYTES: usize = 50 * 1024;
const DEFAULT_LIST_LIMIT: usize = 20;
const MAX_LIST_LIMIT: usize = 50;
const MAX_STORED_RUN_EVENTS: usize = 64;
const MAX_PERSISTED_RUN_LOG_LINES: usize = 50;
const FINISHED_RUN_TTL_MS: u128 = 60 * 60 * 1000;
const INTERRUPTED_RUN_STALE_MS: u128 = 6 * 60 * 60 * 1000;

fn find_mana_dir(cwd: &Path) -> std::result::Result<std::path::PathBuf, String> {
    mana_core::discovery::find_mana_dir(cwd).map_err(|e| e.to_string())
}

fn resolve_mana_dir(
    cwd: &Path,
    params: &serde_json::Value,
) -> std::result::Result<std::path::PathBuf, String> {
    // Transitional compatibility: runtime still accepts legacy alias fields even though
    // the model-facing schema advertises only canonical `scope` and `path`.
    let scope = params
        .get("scope")
        .and_then(|v| v.as_str())
        .or_else(|| params.get("mana_scope").and_then(|v| v.as_str()))
        .unwrap_or("auto");

    if let Some(explicit) = params
        .get("path")
        .and_then(|v| v.as_str())
        .or_else(|| params.get("mana_dir").and_then(|v| v.as_str()))
    {
        let path = Path::new(explicit);
        let resolved = if path.is_absolute() {
            path.to_path_buf()
        } else {
            cwd.join(path)
        };
        return Ok(
            if resolved.file_name().and_then(|name| name.to_str()) == Some(".mana") {
                resolved
            } else {
                resolved.join(".mana")
            },
        );
    }

    match scope {
        "auto" | "project" => find_mana_dir(cwd),
        "root" => mana_core::discovery::find_outermost_mana_dir(cwd).map_err(|e| e.to_string()),
        other => Err(format!(
            "Unknown mana scope '{other}'. Use auto, project, or root."
        )),
    }
}

fn normalize_runtime_value(mut runtime: serde_json::Value) -> serde_json::Value {
    if runtime
        .get("direct_agent")
        .and_then(serde_json::Value::as_str)
        == Some("pi")
    {
        if let Some(map) = runtime.as_object_mut() {
            map.insert("direct_agent".to_string(), json!("imp"));
        }
    }
    runtime
}

fn json_output(value: &impl serde::Serialize) -> ToolOutput {
    match serde_json::to_string_pretty(value) {
        Ok(json) => ToolOutput {
            content: vec![imp_llm::ContentBlock::Text { text: json }],
            details: serde_json::to_value(value).unwrap_or(serde_json::Value::Null),
            is_error: false,
        },
        Err(e) => ToolOutput::error(format!("Failed to serialize: {e}")),
    }
}

#[derive(Debug, Clone, Serialize, Deserialize)]
struct NativeRunParamsView {
    target: serde_json::Value,
    jobs: u32,
    dry_run: bool,
    loop_mode: bool,
    keep_going: bool,
    timeout: u32,
    idle_timeout: u32,
    review: bool,
}

impl From<&NativeRunParams> for NativeRunParamsView {
    fn from(args: &NativeRunParams) -> Self {
        let target = match &args.target {
            RunTarget::AllReady => json!({"kind": "all_ready"}),
            RunTarget::Unit(id) => json!({"kind": "unit", "id": id}),
            RunTarget::Explicit(ids) => json!({"kind": "explicit", "ids": ids}),
        };
        Self {
            target,
            jobs: args.jobs,
            dry_run: args.dry_run,
            loop_mode: args.loop_mode,
            keep_going: args.keep_going,
            timeout: args.timeout,
            idle_timeout: args.idle_timeout,
            review: args.review,
        }
    }
}

#[derive(Debug, Clone, Serialize, Deserialize)]
struct NativeRunState {
    run_id: String,
    scope: String,
    status: String,
    error: Option<String>,
    started_at_ms: u128,
    finished_at_ms: Option<u128>,
    #[serde(default)]
    last_event_at_ms: u128,
    args: NativeRunParamsView,
    runtime: Option<serde_json::Value>,
    summary: RunSummary,
    units: Vec<RunUnitStatus>,
    log_lines: Vec<String>,
    event_count: usize,
}

impl NativeRunState {
    fn new(run_id: String, scope: String, args: &NativeRunParams) -> Self {
        Self {
            run_id,
            scope,
            status: "starting".to_string(),
            error: None,
            started_at_ms: unix_time_ms(),
            finished_at_ms: None,
            last_event_at_ms: unix_time_ms(),
            args: NativeRunParamsView::from(args),
            runtime: None,
            summary: RunSummary {
                total_units: 0,
                total_rounds: 0,
                total_closed: 0,
                total_failed: 0,
                total_abandoned: 0,
                total_awaiting_verify: 0,
                total_skipped: 0,
                duration_secs: 0,
            },
            units: Vec::new(),
            log_lines: Vec::new(),
            event_count: 0,
        }
    }

    fn apply_event(&mut self, event: &StreamEvent) {
        self.event_count += 1;
        self.last_event_at_ms = unix_time_ms();
        if let Some(line) = stream_event_line(event) {
            self.log_lines.push(line);
            trim_log_lines(&mut self.log_lines, MAX_STORED_RUN_EVENTS);
        }

        match event {
            StreamEvent::RunStart {
                total_units,
                total_rounds,
                units,
                runtime,
                ..
            } => {
                self.status = "running".to_string();
                self.summary.total_units = *total_units;
                self.summary.total_rounds = *total_rounds;
                self.runtime = runtime
                    .as_ref()
                    .and_then(|value| serde_json::to_value(value).ok())
                    .map(normalize_runtime_value);
                self.units = units
                    .iter()
                    .map(|info| RunUnitStatus {
                        id: info.id.clone(),
                        title: info.title.clone(),
                        status: "queued".to_string(),
                        round: Some(info.round),
                        agent: None,
                        model: None,
                        duration_secs: None,
                        tool_count: None,
                        turns: None,
                        failure_summary: None,
                        error: None,
                    })
                    .collect();
                self.units.sort_by(|a, b| a.id.cmp(&b.id));
            }
            StreamEvent::RunPlan {
                total_units,
                runtime,
                ..
            } => {
                self.status = "running".to_string();
                self.summary.total_units = (*total_units).max(self.summary.total_units);
                if runtime.is_some() {
                    self.runtime = runtime
                        .as_ref()
                        .and_then(|value| serde_json::to_value(value).ok())
                        .map(normalize_runtime_value);
                }
            }
            StreamEvent::RoundStart { total_rounds, .. } => {
                self.status = "running".to_string();
                self.summary.total_rounds = (*total_rounds).max(self.summary.total_rounds);
            }
            StreamEvent::UnitReady { id, title, .. } => {
                let unit = ensure_unit_status(&mut self.units, id, title);
                unit.status = "queued".to_string();
            }
            StreamEvent::UnitStart {
                id, title, round, ..
            } => {
                self.status = "running".to_string();
                let unit = ensure_unit_status(&mut self.units, id, title);
                unit.title = title.clone();
                unit.round = Some(*round);
                unit.status = "running".to_string();
            }
            StreamEvent::UnitDone {
                id,
                success,
                duration_secs,
                error,
                tool_count,
                turns,
                failure_summary,
                ..
            } => {
                let unit = ensure_unit_status(&mut self.units, id, id);
                unit.status = if *success { "done" } else { "failed" }.to_string();
                unit.duration_secs = Some(*duration_secs);
                unit.tool_count = *tool_count;
                unit.turns = *turns;
                unit.failure_summary = failure_summary.clone();
                unit.error = error.clone();
            }
            StreamEvent::BatchVerify { passed, failed, .. } => {
                for id in passed {
                    let unit = ensure_unit_status(&mut self.units, id, id);
                    unit.status = "done".to_string();
                }
                for id in failed {
                    let unit = ensure_unit_status(&mut self.units, id, id);
                    unit.status = "failed".to_string();
                }
            }
            StreamEvent::RunEnd {
                total_closed,
                total_failed,
                total_abandoned,
                total_awaiting_verify,
                total_skipped,
                duration_secs,
                ..
            } => {
                self.summary.total_closed = *total_closed;
                self.summary.total_failed = *total_failed;
                self.summary.total_abandoned = *total_abandoned;
                self.summary.total_awaiting_verify = *total_awaiting_verify;
                self.summary.total_skipped = *total_skipped;
                self.summary.duration_secs = *duration_secs;
                self.status = "finished".to_string();
                self.finished_at_ms = Some(unix_time_ms());
            }
            StreamEvent::DryRun { runtime, .. } => {
                self.status = "finished".to_string();
                if runtime.is_some() {
                    self.runtime = runtime
                        .as_ref()
                        .and_then(|value| serde_json::to_value(value).ok());
                }
                self.finished_at_ms = Some(unix_time_ms());
            }
            StreamEvent::Error { message } => {
                self.status = "failed".to_string();
                self.error = Some(message.clone());
                self.finished_at_ms = Some(unix_time_ms());
            }
            _ => {}
        }
    }

    fn finish_with_view(&mut self, view: &RunView) {
        let now = unix_time_ms();
        self.summary = view.summary.clone();
        self.units = view.units.clone();
        self.runtime = view
            .runtime
            .as_ref()
            .and_then(|value| serde_json::to_value(value).ok())
            .map(normalize_runtime_value);
        self.status = "finished".to_string();
        self.error = None;
        self.finished_at_ms = Some(now);
        self.last_event_at_ms = now;
    }

    fn fail(&mut self, error: String) {
        let now = unix_time_ms();
        self.status = "failed".to_string();
        self.error = Some(error.clone());
        self.finished_at_ms = Some(now);
        self.last_event_at_ms = now;
        self.log_lines.push(error);
        trim_log_lines(&mut self.log_lines, MAX_STORED_RUN_EVENTS);
    }

    fn persisted(&self) -> Self {
        let mut state = self.clone();
        trim_log_lines(&mut state.log_lines, MAX_PERSISTED_RUN_LOG_LINES);
        state
    }
}

#[derive(Debug, Clone, Default, Serialize, Deserialize)]
struct ManaRunStore {
    next_id: u64,
    runs: Vec<NativeRunState>,
}

impl ManaRunStore {
    fn start_run(&mut self, scope: String, args: &NativeRunParams) -> String {
        self.next_id += 1;
        let run_id = format!("run-{}", self.next_id);
        self.runs
            .push(NativeRunState::new(run_id.clone(), scope, args));
        self.trim_history();
        run_id
    }

    fn persist(&self) {
        let path = run_state_file();
        let persisted = Self {
            next_id: self.next_id,
            runs: self.runs.iter().map(NativeRunState::persisted).collect(),
        };
        if let Ok(json) = serde_json::to_string_pretty(&persisted) {
            let _ = std::fs::write(path, json);
        }
    }

    fn load_persisted() -> Self {
        let path = run_state_file();
        if !path.exists() {
            return Self::default();
        }

        let Ok(contents) = std::fs::read_to_string(path) else {
            return Self::default();
        };
        if contents.trim().is_empty() {
            return Self::default();
        }

        let Ok(mut store) = serde_json::from_str::<Self>(&contents) else {
            return Self::default();
        };

        store.discard_expired_finished_runs();
        store.classify_stale_unfinished_runs();
        store.trim_history();
        store
    }

    fn discard_expired_finished_runs(&mut self) {
        let cutoff = unix_time_ms().saturating_sub(FINISHED_RUN_TTL_MS);
        self.runs.retain(|run| match run.finished_at_ms {
            Some(finished_at_ms) => finished_at_ms >= cutoff,
            None => true,
        });
    }

    fn classify_stale_unfinished_runs(&mut self) {
        let cutoff = unix_time_ms().saturating_sub(INTERRUPTED_RUN_STALE_MS);
        for run in &mut self.runs {
            if (run.status == "starting" || run.status == "running")
                && run.finished_at_ms.is_none()
                && run.last_event_at_ms > 0
                && run.last_event_at_ms < cutoff
            {
                run.status = "interrupted".to_string();
                run.error = Some(
                    "Run state is stale after process restart or lost background worker; inspect logs before rerun".to_string(),
                );
                run.finished_at_ms = Some(run.last_event_at_ms);
                run.log_lines.push(
                    "Run marked interrupted: stale persisted running state after reload"
                        .to_string(),
                );
                trim_log_lines(&mut run.log_lines, MAX_STORED_RUN_EVENTS);
            }
        }
    }

    fn update_with_event(&mut self, run_id: &str, event: &StreamEvent) {
        if let Some(run) = self.runs.iter_mut().find(|run| run.run_id == run_id) {
            run.apply_event(event);
        }
    }

    fn finish_run(&mut self, run_id: &str, view: &RunView) {
        if let Some(run) = self.runs.iter_mut().find(|run| run.run_id == run_id) {
            run.finish_with_view(view);
        }
        self.trim_history();
    }

    fn fail_run(&mut self, run_id: &str, error: String) {
        if let Some(run) = self.runs.iter_mut().find(|run| run.run_id == run_id) {
            run.fail(error);
        }
        self.trim_history();
    }

    fn snapshot(&self, run_id: Option<&str>) -> Option<NativeRunState> {
        if let Some(run_id) = run_id {
            return self.runs.iter().find(|run| run.run_id == run_id).cloned();
        }

        self.runs
            .iter()
            .rev()
            .find(|run| run.status == "starting" || run.status == "running")
            .cloned()
            .or_else(|| self.runs.last().cloned())
    }

    fn trim_history(&mut self) {
        while self.runs.len() > 8 {
            let newest_index = self.runs.len().saturating_sub(1);
            if let Some(index) =
                self.runs
                    .iter()
                    .enumerate()
                    .take(newest_index)
                    .find_map(|(index, run)| {
                        (run.status != "starting" && run.status != "running").then_some(index)
                    })
            {
                self.runs.remove(index);
            } else if !self.runs.is_empty() {
                self.runs.remove(0);
            } else {
                break;
            }
        }
    }
}

fn trim_log_lines(log_lines: &mut Vec<String>, max_lines: usize) {
    if log_lines.len() > max_lines {
        let overflow = log_lines.len() - max_lines;
        log_lines.drain(0..overflow);
    }
}

fn run_state_file() -> std::path::PathBuf {
    if let Ok(path) = agents_file_path() {
        if let Some(dir) = path.parent() {
            std::fs::create_dir_all(dir).ok();
            return dir.join("run_state.json");
        }
    }

    let dir = std::env::var("HOME")
        .map(|h| {
            std::path::PathBuf::from(h)
                .join(".local")
                .join("share")
                .join("units")
        })
        .unwrap_or_else(|_| std::path::PathBuf::from("/tmp").join("mana"));
    std::fs::create_dir_all(&dir).ok();
    dir.join("run_state.json")
}

fn unix_time_ms() -> u128 {
    std::time::SystemTime::now()
        .duration_since(std::time::UNIX_EPOCH)
        .unwrap_or_default()
        .as_millis()
}

fn ensure_unit_status<'a>(
    units: &'a mut Vec<RunUnitStatus>,
    id: &str,
    title: &str,
) -> &'a mut RunUnitStatus {
    if let Some(index) = units.iter().position(|unit| unit.id == id) {
        return &mut units[index];
    }

    units.push(RunUnitStatus {
        id: id.to_string(),
        title: title.to_string(),
        status: "queued".to_string(),
        round: None,
        agent: None,
        model: None,
        duration_secs: None,
        tool_count: None,
        turns: None,
        failure_summary: None,
        error: None,
    });
    let index = units.len() - 1;
    &mut units[index]
}

fn stream_event_line(event: &StreamEvent) -> Option<String> {
    match event {
        StreamEvent::RunStart {
            total_units,
            total_rounds,
            ..
        } => Some(format!(
            "Mana run started: {total_units} jobs across {total_rounds} waves"
        )),
        StreamEvent::RunPlan {
            waves,
            file_overlaps,
            ..
        } => Some(format!(
            "Plan ready: {} waves · {} overlapping file groups",
            waves.len(),
            file_overlaps.len()
        )),
        StreamEvent::RoundStart {
            round,
            total_rounds,
            unit_count,
        } => Some(format!(
            "Round {round}/{total_rounds}: {unit_count} unit(s)"
        )),
        StreamEvent::UnitReady {
            id,
            title,
            unblocked_by,
        } => Some(format!("Ready: {id} {title} (unblocked by {unblocked_by})")),
        StreamEvent::UnitStart {
            id, title, round, ..
        } => Some(format!("▶ {id}  {title}  wave {round}")),
        StreamEvent::UnitThinking { id, text } => {
            Some(format!("… {id}  {}", truncate_line_for_log(text)))
        }
        StreamEvent::UnitTool {
            id,
            tool_name,
            tool_count,
            file_path,
        } => Some(match file_path {
            Some(path) => format!("⚙ {id}  #{tool_count} {tool_name}  {path}"),
            None => format!("⚙ {id}  #{tool_count} {tool_name}"),
        }),
        StreamEvent::UnitTokens {
            id,
            input_tokens,
            output_tokens,
            cost,
            ..
        } => Some(format!(
            "$ {id}  in {input_tokens} · out {output_tokens} · ${cost:.4}"
        )),
        StreamEvent::UnitDone {
            id,
            success,
            duration_secs,
            error,
            ..
        } => Some(if *success {
            format!("✓ {id}  done  {duration_secs}s")
        } else {
            format!(
                "✗ {id}  failed  {}",
                error.clone().unwrap_or_else(|| "error".to_string())
            )
        }),
        StreamEvent::RoundEnd {
            round,
            success_count,
            failed_count,
        } => Some(format!(
            "Round {round} complete: {success_count} done · {failed_count} failed"
        )),
        StreamEvent::RunEnd {
            total_closed,
            total_failed,
            duration_secs,
            ..
        } => Some(format!(
            "Mana run finished: {total_closed} done · {total_failed} failed · {duration_secs}s"
        )),
        StreamEvent::BatchVerify {
            commands_run,
            passed,
            failed,
        } => Some(format!(
            "Batch verify: {commands_run} command(s) · {} passed · {} failed",
            passed.len(),
            failed.len()
        )),
        StreamEvent::VerifyGroupRun {
            command,
            unit_ids,
            success,
        } => Some(format!(
            "Verify command: {} · {} unit(s) · {}",
            truncate_line_for_log(command),
            unit_ids.len(),
            if *success { "passed" } else { "failed" }
        )),
        StreamEvent::DryRun { rounds, .. } => {
            Some(format!("Dry run: {} planned wave(s)", rounds.len()))
        }
        StreamEvent::Error { message } => Some(format!("Run error: {message}")),
    }
}

fn truncate_line_for_log(text: &str) -> String {
    const MAX_CHARS: usize = 160;
    let mut out = String::new();
    let mut chars = text.chars();
    for _ in 0..MAX_CHARS {
        if let Some(ch) = chars.next() {
            out.push(ch);
        } else {
            return out;
        }
    }
    if chars.next().is_some() {
        out.push('…');
    }
    out
}

fn update_run_store_with_event(
    store: &std::sync::Mutex<ManaRunStore>,
    run_id: &str,
    event: &StreamEvent,
) {
    if let Ok(mut store) = store.lock() {
        store.update_with_event(run_id, event);
        store.persist();
    }
}

fn finish_run_in_store(store: &std::sync::Mutex<ManaRunStore>, run_id: &str, view: &RunView) {
    if let Ok(mut store) = store.lock() {
        store.finish_run(run_id, view);
        store.persist();
    }
}

fn fail_run_in_store(store: &std::sync::Mutex<ManaRunStore>, run_id: &str, error: String) {
    if let Ok(mut store) = store.lock() {
        store.fail_run(run_id, error);
        store.persist();
    }
}

fn mana_widget_lines(summary: impl Into<String>, detail: Option<String>) -> WidgetContent {
    let mut lines = vec![summary.into()];
    if let Some(detail) = detail {
        lines.push(detail);
    }
    WidgetContent::Lines(lines)
}

fn mana_run_widget_lines(
    run_id: &str,
    scope: &str,
    state: Option<&NativeRunState>,
) -> WidgetContent {
    let Some(state) = state else {
        return mana_widget_lines(
            format!("mana {run_id}: starting"),
            Some(format!("{scope} · waiting for first event")),
        );
    };

    let summary = format!(
        "mana {}: {} · {}/{} done · {} failed",
        state.run_id,
        state.status,
        state.summary.total_closed,
        state.summary.total_units,
        state.summary.total_failed
    );
    let mut detail = vec![format!(
        "{} · {} events · {}s elapsed",
        state.scope,
        state.event_count,
        unix_time_ms().saturating_sub(state.started_at_ms) / 1000
    )];
    if let Some(active) = state.units.iter().find(|unit| unit.status == "running") {
        detail.push(format!("running {} {}", active.id, active.title));
    } else if let Some(queued) = state.units.iter().find(|unit| unit.status == "queued") {
        detail.push(format!("queued {} {}", queued.id, queued.title));
    }
    if let Some(last) = state.log_lines.last() {
        detail.push(last.clone());
    }
    mana_widget_lines(summary, Some(detail.join(" · ")))
}

async fn set_mana_delta_widget(
    ctx: &ToolContext,
    summary: impl Into<String>,
    detail: Option<String>,
) {
    ctx.ui
        .set_widget("mana", Some(mana_widget_lines(summary, detail)))
        .await;
}

fn unit_delta_label(unit: &serde_json::Value) -> Option<String> {
    let id = unit.get("id").and_then(|v| v.as_str())?;
    let title = unit
        .get("title")
        .and_then(|v| v.as_str())
        .unwrap_or("(untitled)");
    Some(format!("{id} · {title}"))
}

fn target_from_params(params: &serde_json::Value) -> Result<RunTarget> {
    if let Some(values) = params["targets"].as_array() {
        let ids: Vec<String> = values
            .iter()
            .filter_map(|value| value.as_str().map(|s| s.to_string()))
            .collect();
        if ids.is_empty() {
            return Err(crate::error::Error::Tool(
                "mana run targets must contain at least one string id".into(),
            ));
        }
        return Ok(RunTarget::Explicit(ids));
    }

    if let Some(id) = params["id"].as_str() {
        return Ok(RunTarget::Unit(id.to_string()));
    }

    Ok(RunTarget::AllReady)
}

fn target_ids_from_run_target(target: &RunTarget) -> Vec<String> {
    match target {
        RunTarget::Unit(id) => vec![id.clone()],
        RunTarget::Explicit(ids) => ids.clone(),
        RunTarget::AllReady => Vec::new(),
    }
}

fn scope_from_target(target: &RunTarget) -> String {
    match target {
        RunTarget::AllReady => "all ready units".to_string(),
        RunTarget::Unit(id) => format!("unit {id}"),
        RunTarget::Explicit(ids) => format!("targets {}", ids.join(", ")),
    }
}

fn make_follow_up_summary(scope: &str, view: &RunView) -> String {
    let mut summary = if view.summary.total_failed > 0 {
        format!(
            "Native mana orchestration finished for {scope}: {} done, {} failed, {} candidate complete / awaiting verify.",
            view.summary.total_closed,
            view.summary.total_failed,
            view.summary.total_awaiting_verify
        )
    } else if view.summary.total_awaiting_verify > 0 {
        format!(
            "Native mana orchestration finished for {scope}: {} done, {} candidate complete / awaiting verify.",
            view.summary.total_closed, view.summary.total_awaiting_verify
        )
    } else {
        format!(
            "Native mana orchestration finished for {scope}: {} done, 0 failed.",
            view.summary.total_closed
        )
    };

    if let Some(runtime) = &view.runtime {
        let agent = runtime.direct_agent.as_deref().unwrap_or("imp-worker");
        let model = runtime.model.as_deref().unwrap_or("default-model");
        summary.push_str(&format!(
            " Orchestration ran through mana; worker runtime: {agent} · {model}."
        ));
    }

    summary.push_str(" Inspect with mana(action=\"run_state\") or mana(action=\"evaluate\").");
    summary
}

fn parse_csv_strings(value: &serde_json::Value, field_name: &str) -> Result<Vec<String>> {
    if let Some(values) = value.as_array() {
        let parsed = values
            .iter()
            .filter_map(|v| v.as_str().map(|s| s.trim().to_string()))
            .filter(|s| !s.is_empty())
            .collect();
        return Ok(parsed);
    }

    if let Some(raw) = value.as_str() {
        return Ok(raw
            .split(',')
            .map(|s| s.trim().to_string())
            .filter(|s| !s.is_empty())
            .collect());
    }

    if value.is_null() {
        return Ok(Vec::new());
    }

    Err(crate::error::Error::Tool(format!(
        "{field_name} must be a comma-separated string or array of strings"
    )))
}

fn parse_optional_string(value: &serde_json::Value) -> Option<String> {
    value
        .as_str()
        .map(str::trim)
        .filter(|s| !s.is_empty())
        .map(|s| s.to_string())
}

fn parse_on_fail(value: &serde_json::Value) -> Result<Option<OnFailAction>> {
    if value.is_null() {
        return Ok(None);
    }

    if let Some(raw) = value.as_str() {
        return mana_core::ops::create::parse_on_fail(raw)
            .map(Some)
            .map_err(|e| crate::error::Error::Tool(e.to_string()));
    }

    let Some(obj) = value.as_object() else {
        return Err(crate::error::Error::Tool(
            "on_fail must be a string like 'retry:3'/'escalate:P1' or an object".into(),
        ));
    };

    let action = obj
        .get("action")
        .and_then(|v| v.as_str())
        .ok_or_else(|| crate::error::Error::Tool("on_fail object requires 'action'".into()))?;

    match action {
        "retry" => Ok(Some(OnFailAction::Retry {
            max: obj.get("max").and_then(|v| v.as_u64()).map(|v| v as u32),
            delay_secs: obj.get("delay_secs").and_then(|v| v.as_u64()),
        })),
        "escalate" => Ok(Some(OnFailAction::Escalate {
            priority: obj
                .get("priority")
                .and_then(|v| v.as_u64())
                .map(|v| v as u8),
            message: obj
                .get("message")
                .and_then(|v| v.as_str())
                .map(|s| s.trim().to_string())
                .filter(|s| !s.is_empty()),
        })),
        other => Err(crate::error::Error::Tool(format!(
            "unsupported on_fail action: {other}"
        ))),
    }
}

fn parent_placement_details(
    parent: Option<&str>,
    parent_reason: Option<&str>,
) -> serde_json::Value {
    match (parent, parent_reason) {
        (Some(parent), Some(reason)) if !reason.trim().is_empty() => json!({
            "parent": parent,
            "parent_reason": reason,
            "warning": null,
            "hint": "Parent placement was explained explicitly.",
        }),
        (Some(parent), _) => json!({
            "parent": parent,
            "parent_reason": null,
            "warning": "parent_reason_missing",
            "hint": "Before creating follow-up work under the active epic, confirm it belongs to that product/scope. If this is a workflow, reliability, or cross-cutting issue, attach it to a matching epic or create one instead.",
        }),
        (None, _) => json!({
            "parent": null,
            "parent_reason": null,
            "warning": null,
            "hint": "No parent selected. For durable multi-step work, choose or create the matching epic before adding child tasks.",
        }),
    }
}

fn mana_close_force_reason_error(id: &str) -> ToolOutput {
    ToolOutput {
        content: vec![imp_llm::ContentBlock::Text {
            text: format!(
                "mana close {id} with force=true requires reason with equivalent verify evidence"
            ),
        }],
        details: json!({
            "action": "close",
            "id": id,
            "ok": false,
            "force": true,
            "missing": ["reason"],
            "hint": "When stored verify is stale or invalid, rerun equivalent checks and close with force=true plus a reason that names the passing commands/evidence.",
            "example": {
                "action": "close",
                "id": id,
                "force": true,
                "reason": "Equivalent verify passed: cargo test -p imp-core mana -- --nocapture; commit abc123"
            }
        }),
        is_error: true,
    }
}

fn mana_close_error_output(id: &str, error: String) -> ToolOutput {
    let verify_related = is_close_verify_error(&error);
    let hint = if verify_related {
        Some(
            "If the stored verify command is stale or invalid, run equivalent focused checks, then close with force=true and reason containing the passing commands/evidence.",
        )
    } else {
        None
    };
    let text = match hint {
        Some(hint) => format!("{error}\n\nRecovery: {hint}"),
        None => error.clone(),
    };
    ToolOutput {
        content: vec![imp_llm::ContentBlock::Text { text }],
        details: json!({
            "action": "close",
            "id": id,
            "ok": false,
            "error": error,
            "verify_related": verify_related,
            "recovery_hint": hint,
            "force_requires_reason": true,
        }),
        is_error: true,
    }
}

fn is_close_verify_error(error: &str) -> bool {
    let lower = error.to_ascii_lowercase();
    lower.contains("verify")
        || lower.contains("verification")
        || lower.contains("exit")
        || lower.contains("command")
        || lower.contains("timed out")
}

fn mana_validation_error(
    action: &str,
    missing: Vec<&'static str>,
    invalid: Vec<&'static str>,
    hint: &'static str,
    canonical_fields: Vec<&'static str>,
) -> ToolOutput {
    ToolOutput {
        content: vec![imp_llm::ContentBlock::Text {
            text: format!("mana {action} validation failed: {hint}"),
        }],
        details: json!({
            "action": action,
            "ok": false,
            "missing": missing,
            "invalid": invalid,
            "hint": hint,
            "canonical_fields": canonical_fields,
        }),
        is_error: true,
    }
}

fn has_text(params: &serde_json::Value, field: &str) -> bool {
    parse_optional_string(&params[field]).is_some()
}

fn has_nonempty_csv(params: &serde_json::Value, field: &str) -> bool {
    parse_csv_strings(&params[field], field)
        .map(|values| !values.is_empty())
        .unwrap_or(false)
}

fn validate_mana_action(action: &str, params: &serde_json::Value) -> Option<ToolOutput> {
    let missing = |fields: Vec<&'static str>, hint: &'static str, canonical: Vec<&'static str>| {
        Some(mana_validation_error(
            action,
            fields,
            Vec::new(),
            hint,
            canonical,
        ))
    };

    if params.get("path").is_some() && params.get("paths").is_none() {
        match action {
            "create" | "update" | "fact_create" => {
                return Some(mana_validation_error(
                    action,
                    Vec::new(),
                    vec!["path"],
                    "Use path for project/.mana location; use paths to attach relevant files to units.",
                    vec!["path", "paths"],
                ));
            }
            _ => {}
        }
    }

    match action {
        "show" | "claim" | "release" | "close" | "reopen" | "verify" | "fail" | "delete" => {
            if !has_text(params, "id") {
                return missing(vec!["id"], "Provide the unit id.", vec!["id"]);
            }
        }
        "create" => {
            if !has_text(params, "title") {
                return missing(
                    vec!["title"],
                    "create requires title. Before creating, check list/show for an existing relevant unit; update or notes_append when the durable state belongs there. For executable tasks, include description, acceptance, and verify.",
                    vec!["title", "description", "acceptance", "verify", "paths"],
                );
            }
        }
        "update" => {
            if !has_text(params, "id") {
                return missing(
                    vec!["id"],
                    "update requires the unit id to modify.",
                    vec!["id"],
                );
            }
        }
        "notes_append" => {
            let mut fields = Vec::new();
            if !has_text(params, "id") {
                fields.push("id");
            }
            if !has_text(params, "notes") {
                fields.push("notes");
            }
            if !fields.is_empty() {
                return missing(
                    fields,
                    "notes_append requires id and notes; use notes for durable progress/context.",
                    vec!["id", "notes"],
                );
            }
        }
        "decision_add" => {
            let mut fields = Vec::new();
            if !has_text(params, "id") {
                fields.push("id");
            }
            if !has_text(params, "description") && !has_nonempty_csv(params, "decisions") {
                fields.push("description");
            }
            if !fields.is_empty() {
                return missing(
                    fields,
                    "decision_add requires id and description/decisions for scope, architecture, or sequencing choices.",
                    vec!["id", "description", "decisions"],
                );
            }
        }
        "decision_resolve" => {
            let mut fields = Vec::new();
            if !has_text(params, "id") {
                fields.push("id");
            }
            if !has_nonempty_csv(params, "resolve_decisions") {
                fields.push("resolve_decisions");
            }
            if !fields.is_empty() {
                return missing(
                    fields,
                    "decision_resolve requires id and resolve_decisions.",
                    vec!["id", "resolve_decisions"],
                );
            }
        }
        "dep_add" | "dep_remove" => {
            let mut fields = Vec::new();
            if !has_text(params, "from_id") {
                fields.push("from_id");
            }
            if !has_text(params, "dep_id") {
                fields.push("dep_id");
            }
            if !fields.is_empty() {
                return missing(
                    fields,
                    "Dependency edits require from_id and dep_id.",
                    vec!["from_id", "dep_id"],
                );
            }
        }
        "fact_create" => {
            let mut fields = Vec::new();
            if !has_text(params, "title") {
                fields.push("title");
            }
            if !has_text(params, "verify") {
                fields.push("verify");
            }
            if !fields.is_empty() {
                return missing(
                    fields,
                    "fact_create requires title and verify so the fact is re-checkable.",
                    vec!["title", "verify", "paths"],
                );
            }
        }
        "logs" => {
            if !has_text(params, "id") && !has_text(params, "run_id") {
                return missing(
                    vec!["id"],
                    "logs requires id or run_id.",
                    vec!["id", "run_id"],
                );
            }
        }
        "reparent" => {
            if !has_text(params, "id") {
                return missing(
                    vec!["id"],
                    "reparent requires id and parent.",
                    vec!["id", "parent", "reason"],
                );
            }
            if params.get("parent").is_none() {
                return missing(
                    vec!["parent"],
                    "reparent requires the new parent id. Root detach can be added as a separate explicit action later.",
                    vec!["id", "parent", "reason"],
                );
            }
        }
        "run_state" | "evaluate" => {
            if !has_text(params, "run_id") {
                return missing(
                    vec!["run_id"],
                    "run_state/evaluate requires run_id from mana action=run.",
                    vec!["run_id"],
                );
            }
        }
        "run" => {
            if params.get("target").is_some() && params.get("targets").is_none() {
                return Some(mana_validation_error(
                    action,
                    Vec::new(),
                    vec!["target"],
                    "Use targets for explicit unit ids; target is an internal run concept.",
                    vec!["targets", "id"],
                ));
            }
        }
        _ => {}
    }
    None
}

fn parse_unit_kind(value: &serde_json::Value) -> Result<Option<UnitType>> {
    let Some(raw) = value.as_str().map(str::trim).filter(|s| !s.is_empty()) else {
        return Ok(None);
    };

    match raw {
        "epic" => Ok(Some(UnitType::Epic)),
        "task" => Ok(Some(UnitType::Task)),
        // Transitional compatibility: accept legacy `job` at runtime, but keep it out
        // of the model-facing schema so new calls converge on `task`.
        "job" => Ok(Some(UnitType::Task)),
        "fact" => Ok(Some(UnitType::Fact)),
        other => Err(crate::error::Error::Tool(format!(
            "kind must be one of: epic, task, fact (legacy runtime alias: job; got {other})"
        ))),
    }
}

fn run_started_output(scope: &str, run_id: &str, run_args: &NativeRunParams) -> ToolOutput {
    let text = format!("Started native mana orchestration for {scope} as {run_id}.");
    ToolOutput {
        content: vec![imp_llm::ContentBlock::Text { text }],
        details: json!({
            "action": "run",
            "run_id": run_id,
            "scope": scope,
            "target": match &run_args.target {
                RunTarget::AllReady => json!({"kind": "all_ready"}),
                RunTarget::Unit(id) => json!({"kind": "unit", "id": id}),
                RunTarget::Explicit(ids) => json!({"kind": "explicit", "ids": ids}),
            },
            "jobs": run_args.jobs,
            "loop": run_args.loop_mode,
            "dry_run": run_args.dry_run,
            "review": run_args.review,
            "timeout": run_args.timeout,
            "idle_timeout": run_args.idle_timeout,
            "status": "started",
            "next": {
                "state": format!("mana(action=\\\"run_state\\\", run_id=\\\"{run_id}\\\")"),
                "logs": format!("mana(action=\\\"logs\\\", run_id=\\\"{run_id}\\\")")
            }
        }),
        is_error: false,
    }
}

fn runtime_info_for_run(
    _args: &NativeRunParams,
    ctx: &ToolContext,
) -> mana::commands::run::RunRuntimeInfo {
    mana::commands::run::RunRuntimeInfo {
        direct_agent: Some("imp".to_string()),
        model: ctx.config.model.clone(),
    }
}

fn stream_runtime_info_for_run(
    args: &NativeRunParams,
    ctx: &ToolContext,
) -> stream::RunRuntimeInfo {
    runtime_info_for_run(args, ctx).into()
}

fn core_target_from_native(target: &RunTarget) -> mana_core::api::RunTarget {
    match target {
        RunTarget::AllReady => mana_core::api::RunTarget::AllReady,
        RunTarget::Unit(id) => mana_core::api::RunTarget::Unit(id.clone()),
        RunTarget::Explicit(ids) => mana_core::api::RunTarget::Explicit(ids.clone()),
    }
}

fn validate_native_run_target(target: &RunTarget) -> std::result::Result<(), String> {
    match target {
        RunTarget::Explicit(ids) if ids.len() > 1 => Err(
            "native mana run does not yet support multiple explicit targets; run one target at a time"
                .to_string(),
        ),
        _ => Ok(()),
    }
}

fn mana_workspace_root(mana_dir: &Path, fallback: &Path) -> PathBuf {
    mana_dir
        .parent()
        .map(Path::to_path_buf)
        .unwrap_or_else(|| fallback.to_path_buf())
}

#[derive(Debug)]
struct DirectUnitOutcome {
    event: StreamEvent,
    status: RunUnitStatus,
}

fn worker_options_for_native_unit(
    unit: &mana_run_core::ReadyUnit,
    run_args: &NativeRunParams,
    workspace_root: PathBuf,
    mana_dir: PathBuf,
    ctx: &ToolContext,
) -> WorkerRunOptions {
    WorkerRunOptions {
        cwd: workspace_root,
        model_override: None,
        model: unit.model.clone().or_else(|| ctx.config.model.clone()),
        provider: None,
        api_key: None,
        thinking: ctx.config.thinking,
        max_turns: Some(run_args.timeout),
        autonomy_mode: None,
        verification_gates: Vec::new(),
        max_tokens: None,
        system_prompt: None,
        no_tools: false,
        mana_dir_override: Some(mana_dir),
        defer_verify: false,
        lua_loader: ctx.lua_tool_loader.clone(),
    }
}

async fn run_direct_unit(
    unit: mana_run_core::ReadyUnit,
    round: usize,
    mana_dir: PathBuf,
    workspace_root: PathBuf,
    run_args: NativeRunParams,
    ctx: ToolContext,
) -> DirectUnitOutcome {
    let started = Instant::now();
    let assignment = match mana_worker::load_assignment_with_mana_dir(
        &workspace_root,
        &unit.id,
        Some(&mana_dir),
    ) {
        Ok(assignment) => assignment,
        Err(error) => {
            let error = error.to_string();
            return DirectUnitOutcome {
                event: StreamEvent::UnitDone {
                    id: unit.id.clone(),
                    success: false,
                    duration_secs: started.elapsed().as_secs(),
                    error: Some(error.clone()),
                    total_tokens: None,
                    total_cost: None,
                    tool_count: None,
                    turns: None,
                    failure_summary: Some(error.clone()),
                },
                status: RunUnitStatus {
                    id: unit.id,
                    title: unit.title,
                    status: "failed".to_string(),
                    round: Some(round),
                    agent: Some("imp".to_string()),
                    model: None,
                    duration_secs: Some(started.elapsed().as_secs()),
                    tool_count: None,
                    turns: None,
                    failure_summary: Some(error.clone()),
                    error: Some(error),
                },
            };
        }
    };
    let options = worker_options_for_native_unit(&unit, &run_args, workspace_root, mana_dir, &ctx);
    let outcome = mana_worker::run_worker_assignment(assignment, options).await;
    let duration_secs = started.elapsed().as_secs();
    let (success, error, tool_count, turns, failure_summary, model) = match outcome {
        Ok(outcome) => {
            let success = matches!(
                outcome.result.status,
                WorkerStatus::Completed | WorkerStatus::AwaitingVerify
            );
            (
                success,
                outcome.result.error.clone(),
                Some(outcome.result.tool_count),
                Some(outcome.result.turns),
                outcome.result.summary.clone(),
                outcome.result.model.clone(),
            )
        }
        Err(error) => {
            let error = error.to_string();
            (false, Some(error.clone()), None, None, Some(error), None)
        }
    };
    let status = RunUnitStatus {
        id: unit.id.clone(),
        title: unit.title,
        status: if success { "done" } else { "failed" }.to_string(),
        round: Some(round),
        agent: Some("imp".to_string()),
        model,
        duration_secs: Some(duration_secs),
        tool_count,
        turns,
        failure_summary: failure_summary.clone(),
        error: error.clone(),
    };
    DirectUnitOutcome {
        event: StreamEvent::UnitDone {
            id: unit.id,
            success,
            duration_secs,
            error,
            total_tokens: None,
            total_cost: None,
            tool_count,
            turns,
            failure_summary,
        },
        status,
    }
}

async fn run_native_imp_orchestration(
    mana_dir: PathBuf,
    run_args: NativeRunParams,
    ctx: ToolContext,
    run_store: Arc<std::sync::Mutex<ManaRunStore>>,
    run_id: String,
) -> std::result::Result<RunView, String> {
    let started = Instant::now();
    let runtime = runtime_info_for_run(&run_args, &ctx);
    let stream_runtime = stream_runtime_info_for_run(&run_args, &ctx);
    validate_native_run_target(&run_args.target)?;
    let core_target = core_target_from_native(&run_args.target);
    let plan = mana_run_core::compute_run_plan(&mana_dir, &core_target, run_args.dry_run)
        .map_err(|error| error.to_string())?;
    let total_rounds = plan.waves.len();
    let all_units: Vec<_> = plan
        .waves
        .iter()
        .enumerate()
        .flat_map(|(wave_index, wave)| {
            wave.units.iter().map(move |unit| stream::UnitInfo {
                id: unit.id.clone(),
                title: unit.title.clone(),
                round: wave_index + 1,
            })
        })
        .collect();
    let run_start = StreamEvent::RunStart {
        parent_id: scope_from_target(&run_args.target),
        total_units: all_units.len(),
        total_rounds,
        units: all_units,
        runtime: Some(stream_runtime.clone()),
    };
    update_run_store_with_event(&run_store, &run_id, &run_start);

    if run_args.dry_run {
        let summary = RunSummary {
            total_units: plan.total_units,
            total_rounds,
            duration_secs: started.elapsed().as_secs(),
            ..RunSummary::default()
        };
        let view = RunView {
            summary,
            units: run_state_snapshot(&run_store, Some(&run_id))
                .map(|state| state.units)
                .unwrap_or_default(),
            events: vec![run_start],
            runtime: Some(runtime),
        };
        finish_run_in_store(&run_store, &run_id, &view);
        return Ok(view);
    }

    let workspace_root = mana_workspace_root(&mana_dir, &ctx.cwd);
    let mut events = vec![run_start];
    let mut total_closed = 0usize;
    let mut total_failed = 0usize;
    let mut final_units = Vec::new();
    let max_jobs = run_args.jobs.max(1) as usize;

    for (wave_index, wave) in plan.waves.into_iter().enumerate() {
        let round = wave_index + 1;
        let round_start = StreamEvent::RoundStart {
            round,
            total_rounds,
            unit_count: wave.units.len(),
        };
        update_run_store_with_event(&run_store, &run_id, &round_start);
        events.push(round_start);

        let mut success_count = 0usize;
        let mut failed_count = 0usize;
        let mut pending = wave.units.into_iter();
        loop {
            if ctx.cancelled.load(std::sync::atomic::Ordering::SeqCst) {
                return Err("native mana run cancelled".to_string());
            }
            let batch: Vec<_> = pending.by_ref().take(max_jobs).collect();
            if batch.is_empty() {
                break;
            }
            let mut handles = Vec::with_capacity(batch.len());
            for unit in batch {
                let unit_start = StreamEvent::UnitStart {
                    id: unit.id.clone(),
                    title: unit.title.clone(),
                    round,
                    file_overlaps: None,
                    attempt: None,
                    priority: Some(unit.priority),
                };
                update_run_store_with_event(&run_store, &run_id, &unit_start);
                events.push(unit_start);
                handles.push(tokio::spawn(run_direct_unit(
                    unit,
                    round,
                    mana_dir.clone(),
                    workspace_root.clone(),
                    run_args.clone(),
                    ctx.clone(),
                )));
            }
            for handle in handles {
                let outcome = handle
                    .await
                    .map_err(|error| format!("native mana worker task failed: {error}"))?;
                let success = matches!(outcome.status.status.as_str(), "done");
                if success {
                    success_count += 1;
                    total_closed += 1;
                } else {
                    failed_count += 1;
                    total_failed += 1;
                }
                update_run_store_with_event(&run_store, &run_id, &outcome.event);
                events.push(outcome.event);
                final_units.push(outcome.status);
            }
            if failed_count > 0 && !run_args.keep_going {
                break;
            }
        }
        let round_end = StreamEvent::RoundEnd {
            round,
            success_count,
            failed_count,
        };
        update_run_store_with_event(&run_store, &run_id, &round_end);
        events.push(round_end);
        if failed_count > 0 && !run_args.keep_going {
            break;
        }
    }

    let duration_secs = started.elapsed().as_secs();
    let run_end = StreamEvent::RunEnd {
        total_success: total_closed,
        total_closed,
        total_failed,
        total_abandoned: 0,
        total_awaiting_verify: 0,
        total_skipped: plan.blocked.len(),
        duration_secs,
    };
    update_run_store_with_event(&run_store, &run_id, &run_end);
    events.push(run_end);

    let summary = RunSummary {
        total_units: final_units.len(),
        total_rounds,
        total_closed,
        total_failed,
        total_abandoned: 0,
        total_awaiting_verify: 0,
        total_skipped: plan.blocked.len(),
        duration_secs,
    };
    let view = RunView {
        summary,
        units: final_units,
        events,
        runtime: Some(runtime),
    };
    finish_run_in_store(&run_store, &run_id, &view);
    Ok(view)
}

fn spawn_background_run(
    mana_dir: std::path::PathBuf,
    run_args: NativeRunParams,
    ctx: ToolContext,
    run_store: Arc<std::sync::Mutex<ManaRunStore>>,
    run_id: String,
) {
    let ui = ctx.ui.clone();
    let command_tx = ctx.command_tx.clone();
    let scope = scope_from_target(&run_args.target);

    tokio::spawn(async move {
        ui.set_status(
            "mana",
            Some(&format!("mana orchestration: running {scope}")),
        )
        .await;
        ui.set_widget("mana", Some(mana_run_widget_lines(&run_id, &scope, None)))
            .await;

        let run_store_for_progress = run_store.clone();
        let run_id_for_progress = run_id.clone();
        let scope_for_progress = scope.clone();
        let ui_for_progress = ui.clone();
        let progress_task = tokio::spawn(async move {
            let started = Instant::now();
            let mut interval = tokio::time::interval(Duration::from_millis(750));
            loop {
                interval.tick().await;
                let state = run_state_snapshot(&run_store_for_progress, Some(&run_id_for_progress));
                if let Some(state) = state.as_ref() {
                    let status = format!(
                        "mana {}: {} · {}/{} done · {} failed",
                        run_id_for_progress,
                        state.status,
                        state.summary.total_closed,
                        state.summary.total_units,
                        state.summary.total_failed
                    );
                    ui_for_progress.set_status("mana", Some(&status)).await;
                    ui_for_progress
                        .set_widget(
                            "mana",
                            Some(mana_run_widget_lines(
                                &run_id_for_progress,
                                &scope_for_progress,
                                Some(state),
                            )),
                        )
                        .await;
                    if state.finished_at_ms.is_some()
                        || matches!(state.status.as_str(), "finished" | "failed" | "interrupted")
                    {
                        break;
                    }
                } else if started.elapsed() > Duration::from_secs(5) {
                    ui_for_progress
                        .set_status(
                            "mana",
                            Some(&format!("mana {run_id_for_progress}: waiting for events")),
                        )
                        .await;
                }
            }
        });

        let result = run_native_imp_orchestration(
            mana_dir,
            run_args,
            ctx,
            run_store.clone(),
            run_id.clone(),
        )
        .await;

        progress_task.abort();

        match result {
            Ok(view) => {
                let summary = format!(
                    "mana orchestration: {scope} finished · {} done · {} failed",
                    view.summary.total_closed, view.summary.total_failed
                );
                let runtime_detail = view
                    .runtime
                    .as_ref()
                    .map(|runtime| {
                        let agent = runtime.direct_agent.as_deref().unwrap_or("imp-worker");
                        let model = runtime.model.as_deref().unwrap_or("default-model");
                        format!(
                            "native mana tool → mana orchestration → {agent} workers · {scope} · {model}"
                        )
                    })
                    .unwrap_or_else(|| scope.clone());
                ui.set_status("mana", Some(&summary)).await;
                ui.set_widget(
                    "mana",
                    Some(mana_widget_lines(summary.clone(), Some(runtime_detail))),
                )
                .await;
                ui.notify(&summary, NotifyLevel::Info).await;
                if !ui.has_ui() {
                    let _ = command_tx
                        .send(crate::agent::AgentCommand::FollowUp(
                            make_follow_up_summary(&scope, &view),
                        ))
                        .await;
                }
                let ui_clear = ui.clone();
                tokio::spawn(async move {
                    tokio::time::sleep(std::time::Duration::from_secs(12)).await;
                    ui_clear.set_widget("mana", None).await;
                    ui_clear.set_status("mana", None).await;
                });
            }
            Err(err) => {
                let message = format!("mana orchestration: {scope} failed: {err}");
                fail_run_in_store(&run_store, &run_id, message.clone());
                ui.set_status("mana", Some(&message)).await;
                ui.set_widget("mana", Some(mana_widget_lines(message.clone(), None)))
                    .await;
                ui.notify(&message, NotifyLevel::Error).await;
                if !ui.has_ui() {
                    let _ = command_tx
                        .send(crate::agent::AgentCommand::FollowUp(format!(
                            "Native mana orchestration failed for {scope}: {err}. Inspect with mana(action=\"run_state\") or mana(action=\"logs\", run_id=\"{run_id}\")."
                        )))
                        .await;
                }
            }
        }
    });
}

#[derive(Debug, Clone, Copy, PartialEq, Eq)]
enum GuideTopic {
    Overview,
    Task,
    Epic,
    Decision,
    Notes,
    Verify,
    Orchestrate,
    WorkerContext,
}

impl GuideTopic {
    fn as_str(self) -> &'static str {
        match self {
            Self::Overview => "overview",
            Self::Task => "task",
            Self::Epic => "epic",
            Self::Decision => "decision",
            Self::Notes => "notes",
            Self::Verify => "verify",
            Self::Orchestrate => "orchestrate",
            Self::WorkerContext => "worker_context",
        }
    }

    fn parse(raw: &str) -> Option<Self> {
        match raw {
            "overview" => Some(Self::Overview),
            "task" => Some(Self::Task),
            "epic" => Some(Self::Epic),
            "decision" => Some(Self::Decision),
            "notes" => Some(Self::Notes),
            "verify" => Some(Self::Verify),
            "orchestrate" => Some(Self::Orchestrate),
            "worker_context" => Some(Self::WorkerContext),
            _ => None,
        }
    }
}

#[derive(Debug, Clone, Copy, PartialEq, Eq)]
enum TemplateKind {
    Epic,
    Task,
    Fact,
}

impl TemplateKind {
    fn as_str(self) -> &'static str {
        match self {
            Self::Epic => "epic",
            Self::Task => "task",
            Self::Fact => "fact",
        }
    }

    fn parse(raw: &str) -> Option<Self> {
        match raw {
            "epic" => Some(Self::Epic),
            "task" => Some(Self::Task),
            "fact" => Some(Self::Fact),
            _ => None,
        }
    }
}

fn parse_guide_topic(params: &serde_json::Value) -> Result<GuideTopic> {
    let topic = parse_optional_string(&params["topic"]).unwrap_or_else(|| "overview".to_string());
    GuideTopic::parse(&topic).ok_or_else(|| {
        crate::error::Error::Tool(format!(
            "Invalid mana guide topic '{topic}'. Use overview, task, epic, decision, notes, verify, orchestrate, or worker_context."
        ))
    })
}

fn parse_optional_guide_topic(params: &serde_json::Value) -> Result<Option<GuideTopic>> {
    match parse_optional_string(&params["topic"]) {
        Some(topic) => GuideTopic::parse(&topic).map(Some).ok_or_else(|| {
            crate::error::Error::Tool(format!(
                "Invalid mana template topic '{topic}'. Use overview, task, epic, decision, notes, verify, orchestrate, or worker_context."
            ))
        }),
        None => Ok(None),
    }
}

fn parse_template_kind(params: &serde_json::Value) -> Result<TemplateKind> {
    let kind = parse_optional_string(&params["kind"]).unwrap_or_else(|| "task".to_string());
    TemplateKind::parse(&kind).ok_or_else(|| {
        crate::error::Error::Tool(format!(
            "Invalid mana template kind '{kind}'. Use epic, task, or fact."
        ))
    })
}

fn topic_guidance(topic: GuideTopic) -> (&'static str, Vec<&'static str>, Vec<&'static str>) {
    match topic {
        GuideTopic::Overview => (
            "Use mana when work needs durable scope, verification, dependencies, retries, or handoff; use direct edits for small one-pass changes.",
            vec![
                "Before creating, inspect existing relevant units with list/show and update or append notes when the new state belongs there.",
                "Create epics for new durable goals and tasks for new executable units, not for routine progress on existing work.",
                "Record decisions/notes when context should survive the turn.",
                "Close only after the verify command or equivalent evidence passes.",
            ],
            vec![
                "list status=in_progress",
                "show id=...",
                "update id=...",
                "template kind=task",
            ],
        ),
        GuideTopic::Task => (
            "A task is a worker-ready executable spec with clear scope, acceptance, files, and a verify gate.",
            vec![
                "Title the outcome, not the activity.",
                "Description should include current state, exact steps, edge cases, and non-goals.",
                "Acceptance and verify define done.",
            ],
            vec![
                "template kind=task",
                "create kind=task title=... verify=...",
            ],
        ),
        GuideTopic::Epic => (
            "An epic is a durable feature/spec container that decomposes into executable child tasks.",
            vec![
                "Capture goal, constraints, architecture direction, and sequencing.",
                "Keep implementation in child tasks with verify commands.",
            ],
            vec![
                "template kind=epic",
                "create kind=epic title=... feature=true",
            ],
        ),
        GuideTopic::Decision => (
            "Use decisions for scope, architecture, sequencing, and tradeoffs future workers should not relitigate.",
            vec![
                "Add decisions when a choice changes implementation direction.",
                "Resolve decisions when the blocker is answered or superseded.",
            ],
            vec![
                "decision_add id=... description=...",
                "decision_resolve id=... resolve_decisions=...",
            ],
        ),
        GuideTopic::Notes => (
            "Use notes for durable progress, diagnosis, blockers, failed attempts, and retry changes.",
            vec![
                "Append concrete evidence, commands, files, and observed errors.",
                "After failures, update notes before retrying with a changed plan.",
            ],
            vec!["notes_append id=... notes=..."],
        ),
        GuideTopic::Verify => (
            "Verification is first-class: acceptance says what must be true; verify is the command/evidence that proves it.",
            vec![
                "Use fail_first for regression tasks where the check should fail before implementation.",
                "Prefer narrow, repeatable commands over broad expensive checks.",
                "If verify is wrong, record why and use equivalent evidence explicitly.",
            ],
            vec![
                "create title=... acceptance=... verify=...",
                "verify id=...",
            ],
        ),
        GuideTopic::Orchestrate => (
            "Orchestration runs ready tasks in dependency waves and returns run_id for state/log inspection.",
            vec![
                "Create dependencies before running parallel waves.",
                "Use run_state/logs/agents to inspect active work.",
                "Update failed units with new context before retrying.",
            ],
            vec![
                "run targets=[...]",
                "run_state run_id=...",
                "logs run_id=...",
            ],
        ),
        GuideTopic::WorkerContext => (
            "Worker context is assembled from unit fields: title, description, acceptance, verify, paths, dependencies, notes, and decisions.",
            vec![
                "Write units so another agent can execute cold without guessing.",
                "Put architecture or scope choices in decisions/notes, not transient chat.",
            ],
            vec!["show id=...", "notes_append id=... notes=..."],
        ),
    }
}

fn mana_guide_output(topic: GuideTopic) -> ToolOutput {
    let (summary, guidance, next_actions) = topic_guidance(topic);
    text_output(
        format!(
            "mana guide: {}\n{}\n- {}\nnext: {}",
            topic.as_str(),
            summary,
            guidance.join("\n- "),
            next_actions.join("; ")
        ),
        json!({
            "action": "guide",
            "topic": topic.as_str(),
            "summary": summary,
            "guidance": guidance,
            "next_actions": next_actions,
        }),
    )
}

fn template_body(kind: TemplateKind, topic: Option<GuideTopic>) -> serde_json::Value {
    match kind {
        TemplateKind::Epic => json!({
            "kind": "epic",
            "title": "Outcome-oriented goal",
            "description": "Goal, users, constraints, architecture direction, decomposition plan, and non-goals.",
            "acceptance": "Child tasks cover implementation, verification, docs, and rollout risks.",
            "feature": true,
            "labels": ["feature"],
        }),
        TemplateKind::Task => json!({
            "kind": "task",
            "title": "Implement/fix concrete outcome",
            "description": "Current state, exact steps, relevant files, edge cases, and scope boundaries. Include enough context for a cold worker.",
            "acceptance": "Observable behavior or artifact that defines done.",
            "verify": "targeted command that proves the task",
            "paths": ["path/to/file"],
            "fail_first": topic == Some(GuideTopic::Verify),
        }),
        TemplateKind::Fact => json!({
            "kind": "fact",
            "title": "Verifiable project claim",
            "verify": "command that exits 0 while the claim remains true",
            "ttl_days": 30,
            "paths": ["path/to/evidence"],
        }),
    }
}

fn mana_template_output(kind: TemplateKind, topic: Option<GuideTopic>) -> ToolOutput {
    let template = template_body(kind, topic);
    let topic_text = topic.map(|topic| topic.as_str()).unwrap_or("general");
    let summary = match kind {
        TemplateKind::Epic => "Epic template for durable feature/spec containers.",
        TemplateKind::Task => "Task template for worker-ready executable specs.",
        TemplateKind::Fact => "Fact template for re-checkable project claims.",
    };
    text_output(
        format!(
            "mana template: {} ({})\n{}\n{}",
            kind.as_str(),
            topic_text,
            summary,
            serde_json::to_string_pretty(&template).unwrap_or_else(|_| template.to_string())
        ),
        json!({
            "action": "template",
            "kind": kind.as_str(),
            "topic": topic_text,
            "summary": summary,
            "template": template,
            "next_actions": ["create", "update", "notes_append"],
        }),
    )
}

fn text_output(text: String, details: serde_json::Value) -> ToolOutput {
    ToolOutput {
        content: vec![imp_llm::ContentBlock::Text { text }],
        details,
        is_error: false,
    }
}

fn run_state_snapshot(
    run_store: &Arc<std::sync::Mutex<ManaRunStore>>,
    run_id: Option<&str>,
) -> Option<NativeRunState> {
    run_store
        .lock()
        .ok()
        .and_then(|store| store.snapshot(run_id))
}

fn retry_guardrail_for_targets(
    mana_dir: &Path,
    target_ids: &[String],
) -> Result<Option<serde_json::Value>> {
    let mut blocked_units = Vec::new();
    for id in target_ids {
        let Ok(result) = mana_core::ops::show::get(mana_dir, id) else {
            continue;
        };
        let unit = result.unit;
        let Some(attempt) = unit.attempt_log.last() else {
            continue;
        };
        if !matches!(
            attempt.outcome,
            mana_core::unit::types::AttemptOutcome::Failed
        ) {
            continue;
        }
        let Some(finished_at) = attempt.finished_at else {
            continue;
        };
        if unit.updated_at <= finished_at {
            blocked_units.push(json!({
                "id": unit.id,
                "title": unit.title,
                "failed_at": finished_at,
                "updated_at": unit.updated_at,
                "last_failure": attempt.notes,
            }));
        }
    }

    if blocked_units.is_empty() {
        return Ok(None);
    }

    Ok(Some(json!({
        "retry_requires_unit_update": true,
        "blocked_units": blocked_units,
        "next_actions": [
            "Inspect failed unit with mana action=show id=<unit>",
            "Append notes with failure evidence and a changed retry plan",
            "Retry only after updating the failed unit"
        ],
    })))
}

fn run_recovery_details(state: &NativeRunState) -> serde_json::Value {
    let failed_units: Vec<_> = state
        .units
        .iter()
        .filter(|unit| unit.status == "failed")
        .map(|unit| {
            json!({
                "id": unit.id,
                "title": unit.title,
                "failure_summary": unit.failure_summary,
                "error": unit.error,
            })
        })
        .collect();
    let running_units: Vec<_> = state
        .units
        .iter()
        .filter(|unit| unit.status == "running")
        .map(|unit| json!({ "id": unit.id, "title": unit.title, "agent": unit.agent }))
        .collect();
    let awaiting_verify_units: Vec<_> = state
        .units
        .iter()
        .filter(|unit| unit.status == "awaiting_verify")
        .map(|unit| json!({ "id": unit.id, "title": unit.title }))
        .collect();
    let interrupted = state.status == "interrupted";
    let last_event_at_ms = if state.last_event_at_ms > 0 {
        state.last_event_at_ms
    } else {
        state.finished_at_ms.unwrap_or(state.started_at_ms)
    };
    let mut next_actions = Vec::new();
    let mut retry_requires_unit_update = false;

    if interrupted {
        next_actions.push(
            "Run was marked interrupted/stale after reload; inspect logs before rerun".to_string(),
        );
        next_actions.push("Do not assume in-flight workers or tools are still running".to_string());
    }
    if !failed_units.is_empty() || state.status == "failed" || state.summary.total_failed > 0 {
        retry_requires_unit_update = true;
        next_actions.push("Inspect failed units with mana action=show id=<unit>".to_string());
        next_actions.push(
            "Append notes with the failure evidence and changed retry plan before rerun"
                .to_string(),
        );
        next_actions
            .push("Retry only after updating failed units; do not rerun unchanged".to_string());
    }
    if !awaiting_verify_units.is_empty() || state.summary.total_awaiting_verify > 0 {
        next_actions.push("Verify candidate-complete units or close with equivalent evidence if stored verify is stale".to_string());
    }
    if state.status == "running" || state.status == "starting" || !running_units.is_empty() {
        next_actions.push("Inspect logs/agents before assuming the run is stale".to_string());
    }
    if next_actions.is_empty() {
        next_actions.push("No recovery action required".to_string());
    }

    json!({
        "status": state.status,
        "failed_units": failed_units,
        "running_units": running_units,
        "awaiting_verify_units": awaiting_verify_units,
        "stale_workers": if interrupted { json!([{"run_id": state.run_id, "status": state.status}]) } else { json!([]) },
        "last_event_at_ms": last_event_at_ms,
        "next_actions": next_actions,
        "retry_requires_unit_update": retry_requires_unit_update,
    })
}

fn run_state_details(state: &NativeRunState) -> serde_json::Value {
    let mut details = serde_json::to_value(state).unwrap_or(serde_json::Value::Null);
    if let Some(object) = details.as_object_mut() {
        object.insert("recovery".to_string(), run_recovery_details(state));
    }
    details
}

fn run_state_output(state: &NativeRunState) -> ToolOutput {
    let mut lines = vec![format!(
        "Native mana orchestration {}: {} · {}",
        state.run_id, state.scope, state.status
    )];
    if let Some(runtime) = &state.runtime {
        let agent = runtime["direct_agent"].as_str().unwrap_or("imp-worker");
        let model = runtime["model"].as_str().unwrap_or("default-model");
        lines.push(format!("Worker runtime: {agent} · {model}"));
    }
    lines.push(format!(
        "{} total · {} done · {} failed · {} candidate complete / awaiting verify · {} skipped",
        state.summary.total_units,
        state.summary.total_closed,
        state.summary.total_failed,
        state.summary.total_awaiting_verify,
        state.summary.total_skipped
    ));

    if state.status == "interrupted" {
        lines.push(
            "Interrupted: persisted running state is stale; inspect logs before rerun".to_string(),
        );
    }

    if !state.units.is_empty() {
        let preview = state
            .units
            .iter()
            .take(3)
            .map(|unit| format!("{}:{}", unit.id, unit.status))
            .collect::<Vec<_>>()
            .join(", ");
        lines.push(format!("Units: {preview}"));
    }

    if let Some(last) = state.log_lines.last() {
        lines.push(format!("Latest: {last}"));
    }
    let recovery = run_recovery_details(state);
    if let Some(actions) = recovery["next_actions"].as_array() {
        if let Some(first) = actions.first().and_then(|value| value.as_str()) {
            lines.push(format!("Next: {first}"));
        }
    }
    text_output(lines.join("\n"), run_state_details(state))
}

fn evaluate_run_output(state: &NativeRunState) -> ToolOutput {
    let headline = match state.status.as_str() {
        "starting" | "running" => {
            format!(
                "Native mana orchestration run {} is still running for {}.",
                state.run_id, state.scope
            )
        }
        "failed" => format!(
            "Native mana orchestration run {} failed for {}.",
            state.run_id, state.scope
        ),
        _ if state.summary.total_failed > 0 => format!(
            "Native mana orchestration run {} finished with {} failed unit(s).",
            state.run_id, state.summary.total_failed
        ),
        _ if state.summary.total_awaiting_verify > 0 => format!(
            "Native mana orchestration run {} finished with {} unit(s) candidate complete / awaiting verify.",
            state.run_id, state.summary.total_awaiting_verify
        ),
        _ => format!(
            "Native mana orchestration run {} finished successfully: {} unit(s) done.",
            state.run_id, state.summary.total_closed
        ),
    };

    let runtime = state
        .runtime
        .as_ref()
        .map(|runtime| {
            format!(
                "Worker runtime: {} · {}",
                runtime["direct_agent"].as_str().unwrap_or("imp-worker"),
                runtime["model"].as_str().unwrap_or("default-model")
            )
        })
        .unwrap_or_else(|| "Runtime: unknown".to_string());

    let latest = state
        .log_lines
        .last()
        .map(|line| format!("Latest: {line}"))
        .unwrap_or_else(|| "Latest: (no stream events captured yet)".to_string());

    let recovery = run_recovery_details(state);
    let next = recovery["next_actions"]
        .as_array()
        .and_then(|actions| actions.first())
        .and_then(|value| value.as_str())
        .map(|action| format!("Next: {action}"))
        .unwrap_or_else(|| "Next: No recovery action required".to_string());

    text_output(
        format!("{headline}\n{runtime}\n{latest}\n{next}"),
        run_state_details(state),
    )
}

fn claim_output(result: &mana_core::ops::claim::ClaimResult) -> ToolOutput {
    let text = format!(
        "Claimed unit {} ({}) by {}",
        result.unit.id, result.unit.title, result.claimer
    );
    ToolOutput {
        content: vec![imp_llm::ContentBlock::Text { text }],
        details: json!({
            "unit": {
                "id": result.unit.id,
                "title": result.unit.title,
                "status": result.unit.status,
                "claimed_by": result.unit.claimed_by,
            },
            "claimer": result.claimer,
            "is_goal": result.is_goal,
            "path": result.path,
        }),
        is_error: false,
    }
}

fn release_output(result: &mana_core::ops::claim::ReleaseResult) -> ToolOutput {
    let text = format!(
        "Released unit {} ({}) back to {}",
        result.unit.id, result.unit.title, result.unit.status
    );
    ToolOutput {
        content: vec![imp_llm::ContentBlock::Text { text }],
        details: json!({
            "unit": {
                "id": result.unit.id,
                "title": result.unit.title,
                "status": result.unit.status,
                "claimed_by": result.unit.claimed_by,
            },
            "path": result.path,
        }),
        is_error: false,
    }
}

fn truncate_with_note(text: &str) -> String {
    let result = truncate_head(text, MAX_OUTPUT_LINES, MAX_OUTPUT_BYTES);
    if !result.truncated {
        return result.content;
    }

    let mut output = result.content;
    output.push_str(&format!(
        "\n[Output truncated: showing first {} of {} lines{}]",
        result.output_lines,
        result.total_lines,
        result
            .temp_file
            .as_ref()
            .map(|p| format!(". Full output saved to {}", p.display()))
            .unwrap_or_default()
    ));
    output
}

fn compact_list_output(
    entries: &[mana_core::index::IndexEntry],
    requested_limit: Option<usize>,
) -> ToolOutput {
    let limit = requested_limit
        .unwrap_or(DEFAULT_LIST_LIMIT)
        .clamp(1, MAX_LIST_LIMIT);
    let shown = entries.len().min(limit);
    let units: Vec<_> = entries
        .iter()
        .take(limit)
        .map(|entry| {
            json!({
                "id": entry.id,
                "title": entry.title,
                "status": entry.status,
                "priority": entry.priority,
                "kind": entry.kind,
                "parent": entry.parent,
                "labels": entry.labels,
                "updated_at": entry.updated_at,
                "claimed_by": entry.claimed_by,
                "has_verify": entry.has_verify,
                "attempts": entry.attempts,
                "paths": entry.paths,
            })
        })
        .collect();

    let mut lines = vec![format!(
        "mana list: showing {shown} of {} units. Prefer `show` + `update`/`notes_append` on an existing relevant unit before `create`.",
        entries.len()
    )];
    for entry in entries.iter().take(limit) {
        let parent = entry
            .parent
            .as_ref()
            .map(|parent| format!(" parent={parent}"))
            .unwrap_or_default();
        let claimed = entry
            .claimed_by
            .as_ref()
            .map(|claimed_by| format!(" claimed={claimed_by}"))
            .unwrap_or_default();
        lines.push(format!(
            "- {} P{} {:?} {:?}{}{} — {}",
            entry.id, entry.priority, entry.status, entry.kind, parent, claimed, entry.title
        ));
    }
    if entries.len() > shown {
        lines.push(format!(
            "[{} more omitted; narrow with status/parent/label/priority or request all only when needed]",
            entries.len() - shown
        ));
    }

    text_output(
        lines.join("\n"),
        json!({
            "action": "list",
            "total": entries.len(),
            "shown": shown,
            "limit": limit,
            "truncated": entries.len() > shown,
            "hint": "Prefer updating existing relevant units; use show id=... before create when unsure.",
            "units": units,
        }),
    )
}

fn scored_units_to_text(units: &[ScoredUnit]) -> String {
    if units.is_empty() {
        return "No ready units. Create one with: mana create \"task\" --verify \"cmd\""
            .to_string();
    }

    let mut lines = Vec::new();
    for unit in units {
        lines.push(format!(
            "P{}  {:.1}  {}",
            unit.priority, unit.score, unit.title
        ));
        if !unit.unblocks.is_empty() {
            lines.push(format!("      Unblocks: {}", unit.unblocks.join(", ")));
        }
        let attempts = if unit.attempts > 0 {
            format!(" | Attempts: {}", unit.attempts)
        } else {
            String::new()
        };
        lines.push(format!(
            "      ID: {} | Age: {} days{}",
            unit.id, unit.age_days, attempts
        ));
        lines.push(String::new());
    }
    lines.join("\n")
}

fn tree_lines(node: &mana_core::api::TreeNode, indent: usize, out: &mut Vec<String>) {
    let prefix = "  ".repeat(indent);
    let verify = if node.has_verify { "spec" } else { "goal" };
    out.push(format!(
        "{}{} {} [{} P{} · {}]",
        prefix, node.id, node.title, node.status, node.priority, verify
    ));
    for child in &node.children {
        tree_lines(child, indent + 1, out);
    }
}

pub struct ManaTool {
    run_store: Arc<std::sync::Mutex<ManaRunStore>>,
}

impl Default for ManaTool {
    fn default() -> Self {
        Self {
            run_store: Arc::new(std::sync::Mutex::new(ManaRunStore::load_persisted())),
        }
    }
}

#[async_trait]
impl Tool for ManaTool {
    fn name(&self) -> &str {
        "mana"
    }
    fn label(&self) -> &str {
        "Mana"
    }
    fn description(&self) -> &str {
        "Mana work graph operations. Use guide/template for detailed usage."
    }
    fn parameters(&self) -> serde_json::Value {
        let string_or_array = || {
            json!({
                "oneOf": [
                    { "type": "string" },
                    { "type": "array", "items": { "type": "string" } }
                ]
            })
        };

        let mut properties = serde_json::Map::new();
        properties.insert(
            "action".into(),
            json!({ "type": "string", "enum": ["status", "list", "show", "create", "close", "update", "run", "run_state", "evaluate", "claim", "release", "logs", "agents", "next", "tree", "reopen", "verify", "fail", "delete", "dep_add", "dep_remove", "fact_create", "fact_verify", "notes_append", "decision_add", "decision_resolve", "reparent", "guide", "template"] }),
        );
        properties.insert("id".into(), json!({ "type": "string" }));
        properties.insert(
            "scope".into(),
            json!({ "type": "string", "enum": ["auto", "project", "root"], "description": "auto|project|root" }),
        );
        properties.insert(
            "path".into(),
            json!({ "type": "string", "description": "Project/.mana path" }),
        );
        properties.insert(
            "from_id".into(),
            json!({ "type": "string", "description": "Source unit ID" }),
        );
        properties.insert(
            "dep_id".into(),
            json!({ "type": "string", "description": "Dependency unit ID" }),
        );
        properties.insert(
            "run_id".into(),
            json!({ "type": "string", "description": "Run ID from action=run" }),
        );
        properties.insert("title".into(), json!({ "type": "string" }));
        properties.insert(
            "topic".into(),
            json!({ "type": "string", "enum": ["overview", "task", "epic", "decision", "notes", "verify", "orchestrate", "worker_context"], "description": "guide/template topic" }),
        );
        properties.insert(
            "verify".into(),
            json!({ "type": "string", "description": "Verify shell command" }),
        );
        properties.insert("description".into(), json!({ "type": "string" }));
        properties.insert(
            "acceptance".into(),
            json!({ "type": "string", "description": "Acceptance criteria" }),
        );
        properties.insert(
            "notes".into(),
            json!({ "type": "string", "description": "Progress notes" }),
        );
        properties.insert(
            "design".into(),
            json!({ "type": "string", "description": "Design context" }),
        );
        properties.insert(
            "assignee".into(),
            json!({ "type": "string", "description": "Assignee/owner" }),
        );
        properties.insert("parent".into(), json!({ "type": "string" }));
        properties.insert(
            "parent_reason".into(),
            json!({ "type": "string", "description": "Why this parent" }),
        );
        let mut deps = string_or_array();
        deps["description"] = json!("Dependency IDs");
        properties.insert("deps".into(), deps);
        let mut produces = string_or_array();
        produces["description"] = json!("Produced artifacts");
        properties.insert("produces".into(), produces);
        let mut requires = string_or_array();
        requires["description"] = json!("Required artifacts");
        properties.insert("requires".into(), requires);
        let mut paths = string_or_array();
        paths["description"] = json!("Relevant paths");
        properties.insert("paths".into(), paths);
        let mut decisions = string_or_array();
        decisions["description"] = json!("Blocking decisions");
        properties.insert("decisions".into(), decisions);
        let mut resolve_decisions = string_or_array();
        resolve_decisions["description"] = json!("Decision IDs/indexes to resolve");
        properties.insert("resolve_decisions".into(), resolve_decisions);
        properties.insert("status".into(), json!({ "type": "string" }));
        properties.insert("priority".into(), json!({ "type": "integer" }));
        let mut labels = string_or_array();
        labels["description"] = json!("Labels");
        properties.insert("labels".into(), labels);
        properties.insert(
            "kind".into(),
            json!({ "type": "string", "enum": ["epic", "task", "fact"], "description": "Unit type" }),
        );
        properties.insert(
            "feature".into(),
            json!({ "type": "boolean", "description": "Feature-level goal" }),
        );
        properties.insert(
            "fail_first".into(),
            json!({ "type": "boolean", "description": "Verify should fail first" }),
        );
        properties.insert(
            "verify_timeout".into(),
            json!({ "type": "integer", "description": "Verify timeout seconds" }),
        );
        properties.insert(
            "on_fail".into(),
            json!({ "description": "retry:3 or escalate:P1" }),
        );
        properties.insert(
            "ttl_days".into(),
            json!({ "type": "integer", "description": "Fact TTL days" }),
        );
        properties.insert(
            "pass_ok".into(),
            json!({ "type": "boolean", "description": "Allow passing fact verify" }),
        );
        properties.insert(
            "force".into(),
            json!({ "type": "boolean", "description": "Bypass close verify with reason" }),
        );
        properties.insert("reason".into(), json!({ "type": "string" }));
        properties.insert("all".into(), json!({ "type": "boolean" }));
        properties.insert(
            "by".into(),
            json!({ "type": "string", "description": "Claimer" }),
        );
        properties.insert(
            "count".into(),
            json!({ "type": "integer", "description": "Max results" }),
        );
        properties.insert(
            "targets".into(),
            json!({ "type": "array", "items": { "type": "string" }, "description": "Target unit IDs" }),
        );
        properties.insert("jobs".into(), json!({ "type": "integer" }));
        properties.insert("dry_run".into(), json!({ "type": "boolean" }));
        properties.insert("loop".into(), json!({ "type": "boolean" }));
        properties.insert("keep_going".into(), json!({ "type": "boolean" }));
        properties.insert("timeout".into(), json!({ "type": "integer" }));
        properties.insert("idle_timeout".into(), json!({ "type": "integer" }));
        properties.insert("review".into(), json!({ "type": "boolean" }));

        serde_json::Value::Object(serde_json::Map::from_iter([
            ("type".into(), json!("object")),
            ("properties".into(), serde_json::Value::Object(properties)),
            ("required".into(), json!(["action"])),
        ]))
    }
    fn is_readonly(&self) -> bool {
        false
    }

    async fn execute(
        &self,
        _call_id: &str,
        params: serde_json::Value,
        ctx: ToolContext,
    ) -> Result<ToolOutput> {
        let action = params["action"]
            .as_str()
            .ok_or_else(|| crate::error::Error::Tool("missing 'action' parameter".into()))?;

        let mode = ctx.mode;

        match action {
            "guide" => return Ok(mana_guide_output(parse_guide_topic(&params)?)),
            "template" => {
                return Ok(mana_template_output(
                    parse_template_kind(&params)?,
                    parse_optional_guide_topic(&params)?,
                ));
            }
            _ => {}
        }

        if !mode.allows_mana_action(action) {
            let mode_name = format!("{mode:?}").to_lowercase();
            return Ok(ToolOutput::error(format!(
                "Mana action '{action}' is not available in {mode_name} mode"
            )));
        }

        if let Some(validation_error) = validate_mana_action(action, &params) {
            return Ok(validation_error);
        }

        let mana_dir = resolve_mana_dir(&ctx.cwd, &params).map_err(crate::error::Error::Tool)?;

        match action {
            "status" => match mana_core::api::get_status(&mana_dir) {
                Ok(status) => Ok(json_output(&status)),
                Err(e) => Ok(ToolOutput::error(e.to_string())),
            },
            "list" => {
                let list_params = mana_core::ops::list::ListParams {
                    status: params["status"].as_str().map(|s| s.to_string()),
                    priority: params["priority"].as_u64().map(|p| p as u8),
                    parent: params["parent"].as_str().map(|s| s.to_string()),
                    label: params["label"].as_str().map(|s| s.to_string()),
                    assignee: None,
                    current_user: None,
                    include_closed: params["all"].as_bool().unwrap_or(false),
                };
                match mana_core::api::list_units(&mana_dir, &list_params) {
                    Ok(entries) => Ok(compact_list_output(
                        &entries,
                        params["count"].as_u64().map(|count| count as usize),
                    )),
                    Err(e) => {
                        let message = format!("mana run failed: {e}");
                        ctx.ui
                            .set_widget("mana", Some(mana_widget_lines(message.clone(), None)))
                            .await;
                        ctx.ui.set_status("mana", Some(&message)).await;
                        Ok(ToolOutput::error(e.to_string()))
                    }
                }
            }
            "show" => {
                let id = params["id"]
                    .as_str()
                    .ok_or_else(|| crate::error::Error::Tool("show requires 'id'".into()))?;
                match mana_core::ops::show::get(&mana_dir, id) {
                    Ok(result) => Ok(json_output(&result.unit)),
                    Err(e) => Ok(ToolOutput::error(e.to_string())),
                }
            }
            "create" => {
                let title = params["title"]
                    .as_str()
                    .ok_or_else(|| crate::error::Error::Tool("create requires 'title'".into()))?;
                let dependencies = parse_csv_strings(&params["deps"], "deps")?;
                let labels = parse_csv_strings(&params["labels"], "labels")?;
                let produces = parse_csv_strings(&params["produces"], "produces")?;
                let requires = parse_csv_strings(&params["requires"], "requires")?;
                let paths = parse_csv_strings(&params["paths"], "paths")?;
                let decisions = parse_csv_strings(&params["decisions"], "decisions")?;
                let on_fail = parse_on_fail(&params["on_fail"])?;
                let kind = parse_unit_kind(&params["kind"])?;

                let create_params = mana_core::ops::create::CreateParams {
                    title: title.to_string(),
                    handle: None,
                    description: parse_optional_string(&params["description"]),
                    acceptance: parse_optional_string(&params["acceptance"]),
                    notes: parse_optional_string(&params["notes"]),
                    design: parse_optional_string(&params["design"]),
                    verify: parse_optional_string(&params["verify"]),
                    priority: params["priority"].as_u64().map(|p| p as u8),
                    labels,
                    assignee: parse_optional_string(&params["assignee"]),
                    dependencies,
                    parent: parse_optional_string(&params["parent"]),
                    produces,
                    requires,
                    paths,
                    on_fail,
                    fail_first: params["fail_first"].as_bool().unwrap_or(false),
                    feature: params["feature"].as_bool().unwrap_or(false),
                    kind,
                    verify_timeout: params["verify_timeout"].as_u64(),
                    decisions,
                    force: params["force"].as_bool().unwrap_or(false),
                };
                match mana_core::api::create_unit(&mana_dir, create_params) {
                    Ok(result) => {
                        let unit_value =
                            serde_json::to_value(&result.unit).unwrap_or(serde_json::Value::Null);
                        let summary = unit_delta_label(&unit_value)
                            .map(|label| format!("mana delta: created {label}"))
                            .unwrap_or_else(|| "mana delta: created unit".to_string());
                        let parent = parse_optional_string(&params["parent"]);
                        let parent_reason = parse_optional_string(&params["parent_reason"]);
                        let detail = parent
                            .as_ref()
                            .map(|parent| match parent_reason.as_deref() {
                                Some(reason) => format!("parent {parent}: {reason}"),
                                None => format!("parent {parent}; parent_reason missing"),
                            });
                        set_mana_delta_widget(&ctx, summary.clone(), detail).await;
                        Ok(text_output(
                            summary,
                            json!({
                                "action": "create",
                                "title": title,
                                "description": params["description"],
                                "verify": params["verify"],
                                "priority": params["priority"],
                                "parent": params["parent"],
                                "parent_reason": params["parent_reason"],
                                "placement": parent_placement_details(parent.as_deref(), parent_reason.as_deref()),
                                "deps": params["deps"],
                                "labels": params["labels"],
                                "unit": unit_value,
                                "path": result.path,
                            }),
                        ))
                    }
                    Err(e) => Ok(ToolOutput::error(e.to_string())),
                }
            }
            "claim" => {
                let id = params["id"]
                    .as_str()
                    .ok_or_else(|| crate::error::Error::Tool("claim requires 'id'".into()))?;
                let claim_params = ClaimParams {
                    by: params["by"].as_str().map(|s| s.to_string()),
                    force: params["force"].as_bool().unwrap_or(true),
                };
                match mana_core::api::claim_unit(&mana_dir, id, claim_params) {
                    Ok(result) => Ok(claim_output(&result)),
                    Err(e) => Ok(ToolOutput::error(e.to_string())),
                }
            }
            "release" => {
                let id = params["id"]
                    .as_str()
                    .ok_or_else(|| crate::error::Error::Tool("release requires 'id'".into()))?;
                match mana_core::api::release_unit(&mana_dir, id) {
                    Ok(result) => Ok(release_output(&result)),
                    Err(e) => Ok(ToolOutput::error(e.to_string())),
                }
            }
            "close" => {
                let id = params["id"]
                    .as_str()
                    .ok_or_else(|| crate::error::Error::Tool("close requires 'id'".into()))?;
                let force = params["force"].as_bool().unwrap_or(false);
                let reason = params["reason"].as_str().map(|s| s.to_string());
                if force
                    && reason
                        .as_deref()
                        .map(str::trim)
                        .unwrap_or_default()
                        .is_empty()
                {
                    return Ok(mana_close_force_reason_error(id));
                }
                let opts = mana_core::ops::close::CloseOpts {
                    reason: reason.clone(),
                    force,
                    defer_verify: false,
                };
                match mana_core::api::close_unit(&mana_dir, id, opts) {
                    Ok(outcome) => {
                        let details =
                            serde_json::to_value(&outcome).unwrap_or(serde_json::Value::Null);
                        if let Some(unit) = details.get("unit") {
                            let summary = unit_delta_label(unit)
                                .map(|label| format!("mana delta: closed {label}"))
                                .unwrap_or_else(|| format!("mana delta: closed {id}"));
                            set_mana_delta_widget(&ctx, summary, reason.clone()).await;
                        }
                        let mut details_obj = details.as_object().cloned().unwrap_or_default();
                        details_obj.insert("action".into(), json!("close"));
                        details_obj.insert("force".into(), json!(force));
                        if let Some(reason) = reason.as_deref() {
                            details_obj.insert("reason".into(), json!(reason));
                            if force {
                                details_obj
                                    .insert("equivalent_verify_evidence".into(), json!(reason));
                            }
                        }
                        Ok(text_output(
                            format!("Closed unit {id}"),
                            serde_json::Value::Object(details_obj),
                        ))
                    }
                    Err(e) => Ok(mana_close_error_output(id, e.to_string())),
                }
            }
            "update" => {
                let id = params["id"]
                    .as_str()
                    .ok_or_else(|| crate::error::Error::Tool("update requires 'id'".into()))?;
                let decisions = parse_csv_strings(&params["decisions"], "decisions")?;
                let resolve_decisions =
                    parse_csv_strings(&params["resolve_decisions"], "resolve_decisions")?;
                let labels = parse_csv_strings(&params["labels"], "labels")?;
                let update_params = mana_core::ops::update::UpdateParams {
                    title: parse_optional_string(&params["title"]),
                    description: parse_optional_string(&params["description"]),
                    acceptance: parse_optional_string(&params["acceptance"]),
                    notes: parse_optional_string(&params["notes"]),
                    design: parse_optional_string(&params["design"]),
                    status: parse_optional_string(&params["status"]),
                    priority: params["priority"].as_u64().map(|p| p as u8),
                    assignee: parse_optional_string(&params["assignee"]),
                    add_label: labels
                        .into_iter()
                        .next()
                        .or_else(|| parse_optional_string(&params["add_label"])),
                    remove_label: parse_optional_string(&params["remove_label"]),
                    decisions,
                    resolve_decisions,
                };
                match mana_core::api::update_unit(&mana_dir, id, update_params) {
                    Ok(result) => {
                        let unit_value =
                            serde_json::to_value(&result.unit).unwrap_or(serde_json::Value::Null);
                        let summary = unit_delta_label(&unit_value)
                            .map(|label| format!("mana delta: updated {label}"))
                            .unwrap_or_else(|| format!("mana delta: updated {id}"));
                        set_mana_delta_widget(&ctx, summary.clone(), None).await;
                        Ok(text_output(
                            summary,
                            json!({
                                "action": "update",
                                "id": id,
                                "status": params["status"],
                                "title": params["title"],
                                "description": params["description"],
                                "priority": params["priority"],
                                "notes": params["notes"],
                                "acceptance": params["acceptance"],
                                "add_label": params["add_label"],
                                "remove_label": params["remove_label"],
                                "decisions": params["decisions"],
                                "resolve_decisions": params["resolve_decisions"],
                                "unit": unit_value,
                                "path": result.path,
                            }),
                        ))
                    }
                    Err(e) => Ok(ToolOutput::error(e.to_string())),
                }
            }
            "notes_append" => {
                let id = params["id"].as_str().ok_or_else(|| {
                    crate::error::Error::Tool("notes_append requires 'id'".into())
                })?;
                let note = parse_optional_string(&params["notes"]).ok_or_else(|| {
                    crate::error::Error::Tool("notes_append requires 'notes'".into())
                })?;
                let update_params = mana_core::ops::update::UpdateParams {
                    title: None,
                    description: None,
                    acceptance: None,
                    notes: Some(note),
                    design: None,
                    status: None,
                    priority: None,
                    assignee: None,
                    add_label: None,
                    remove_label: None,
                    decisions: Vec::new(),
                    resolve_decisions: Vec::new(),
                };
                match mana_core::api::update_unit(&mana_dir, id, update_params) {
                    Ok(result) => {
                        let unit_value =
                            serde_json::to_value(&result.unit).unwrap_or(serde_json::Value::Null);
                        let summary = unit_delta_label(&unit_value)
                            .map(|label| format!("mana delta: notes appended on {label}"))
                            .unwrap_or_else(|| format!("mana delta: notes appended on {id}"));
                        set_mana_delta_widget(&ctx, summary.clone(), Some("notes appended".into()))
                            .await;
                        Ok(text_output(
                            summary,
                            json!({
                                "action": "notes_append",
                                "id": id,
                                "notes": params["notes"],
                                "unit": unit_value,
                                "path": result.path,
                            }),
                        ))
                    }
                    Err(e) => Ok(ToolOutput::error(e.to_string())),
                }
            }
            "decision_add" => {
                let id = params["id"].as_str().ok_or_else(|| {
                    crate::error::Error::Tool("decision_add requires 'id'".into())
                })?;
                let decision = parse_optional_string(&params["description"])
                    .or_else(|| {
                        parse_csv_strings(&params["decisions"], "decisions")
                            .ok()
                            .and_then(|mut decisions| decisions.drain(..).next())
                    })
                    .or_else(|| parse_optional_string(&params["notes"]))
                    .ok_or_else(|| {
                        crate::error::Error::Tool(
                            "decision_add requires 'description' or 'decisions'".into(),
                        )
                    })?;
                let update_params = mana_core::ops::update::UpdateParams {
                    title: None,
                    description: None,
                    acceptance: None,
                    notes: None,
                    design: None,
                    status: None,
                    priority: None,
                    assignee: None,
                    add_label: None,
                    remove_label: None,
                    decisions: vec![decision],
                    resolve_decisions: Vec::new(),
                };
                match mana_core::api::update_unit(&mana_dir, id, update_params) {
                    Ok(result) => {
                        let unit_value =
                            serde_json::to_value(&result.unit).unwrap_or(serde_json::Value::Null);
                        let summary = unit_delta_label(&unit_value)
                            .map(|label| format!("mana delta: decision added on {label}"))
                            .unwrap_or_else(|| format!("mana delta: decision added on {id}"));
                        set_mana_delta_widget(&ctx, summary.clone(), Some("decision added".into()))
                            .await;
                        Ok(text_output(
                            summary,
                            json!({
                                "action": "decision_add",
                                "id": id,
                                "description": params["description"],
                                "unit": unit_value,
                                "path": result.path,
                            }),
                        ))
                    }
                    Err(e) => Ok(ToolOutput::error(e.to_string())),
                }
            }
            "decision_resolve" => {
                let id = params["id"].as_str().ok_or_else(|| {
                    crate::error::Error::Tool("decision_resolve requires 'id'".into())
                })?;
                let resolve_decisions =
                    parse_csv_strings(&params["resolve_decisions"], "resolve_decisions")?;
                if resolve_decisions.is_empty() {
                    return Ok(ToolOutput::error(
                        "decision_resolve requires 'resolve_decisions'",
                    ));
                }
                let update_params = mana_core::ops::update::UpdateParams {
                    title: None,
                    description: None,
                    acceptance: None,
                    notes: None,
                    design: None,
                    status: None,
                    priority: None,
                    assignee: None,
                    add_label: None,
                    remove_label: None,
                    decisions: Vec::new(),
                    resolve_decisions,
                };
                match mana_core::api::update_unit(&mana_dir, id, update_params) {
                    Ok(result) => {
                        let unit_value =
                            serde_json::to_value(&result.unit).unwrap_or(serde_json::Value::Null);
                        let summary = unit_delta_label(&unit_value)
                            .map(|label| format!("mana delta: decision resolved on {label}"))
                            .unwrap_or_else(|| format!("mana delta: decision resolved on {id}"));
                        set_mana_delta_widget(
                            &ctx,
                            summary.clone(),
                            Some("decision resolved".into()),
                        )
                        .await;
                        Ok(text_output(
                            summary,
                            json!({
                                "action": "decision_resolve",
                                "id": id,
                                "resolve_decisions": params["resolve_decisions"],
                                "unit": unit_value,
                                "path": result.path,
                            }),
                        ))
                    }
                    Err(e) => Ok(ToolOutput::error(e.to_string())),
                }
            }
            "reopen" => {
                let id = params["id"]
                    .as_str()
                    .ok_or_else(|| crate::error::Error::Tool("reopen requires 'id'".into()))?;
                match mana_core::api::reopen_unit(&mana_dir, id) {
                    Ok(result) => {
                        let summary = format!(
                            "mana delta: reopened {} ({})",
                            result.unit.id, result.unit.title
                        );
                        set_mana_delta_widget(&ctx, summary, Some("status=open".into())).await;
                        Ok(text_output(
                            format!("Reopened unit {} ({})", result.unit.id, result.unit.title),
                            json!({
                                "action": "reopen",
                                "unit": {
                                    "id": result.unit.id,
                                    "title": result.unit.title,
                                    "status": result.unit.status,
                                },
                                "path": result.path,
                            }),
                        ))
                    }
                    Err(e) => Ok(ToolOutput::error(e.to_string())),
                }
            }
            "verify" => {
                let id = params["id"]
                    .as_str()
                    .ok_or_else(|| crate::error::Error::Tool("verify requires 'id'".into()))?;
                match mana_core::api::run_verify(&mana_dir, id) {
                    Ok(Some(result)) => Ok(text_output(
                        format!(
                            "Verify {} for unit {id}{}",
                            if result.passed { "passed" } else { "failed" },
                            result
                                .exit_code
                                .map(|code| format!(" (exit {code})"))
                                .unwrap_or_default()
                        ),
                        json!({
                            "passed": result.passed,
                            "exit_code": result.exit_code,
                            "stdout": result.stdout,
                            "stderr": result.stderr,
                            "timed_out": result.timed_out,
                            "command": result.command,
                            "timeout_secs": result.timeout_secs,
                            "unit_id": id,
                        }),
                    )),
                    Ok(None) => Ok(ToolOutput::text(format!(
                        "Unit {id} has no verify command."
                    ))),
                    Err(e) => Ok(ToolOutput::error(e.to_string())),
                }
            }
            "fail" => {
                let id = params["id"]
                    .as_str()
                    .ok_or_else(|| crate::error::Error::Tool("fail requires 'id'".into()))?;
                match mana_core::api::fail_unit(
                    &mana_dir,
                    id,
                    parse_optional_string(&params["reason"]),
                ) {
                    Ok(unit) => {
                        let unit_value =
                            serde_json::to_value(&unit).unwrap_or(serde_json::Value::Null);
                        let summary = unit_delta_label(&unit_value)
                            .map(|label| format!("mana delta: marked failed {label}"))
                            .unwrap_or_else(|| format!("mana delta: marked failed {id}"));
                        set_mana_delta_widget(
                            &ctx,
                            summary,
                            params["reason"].as_str().map(|s| s.to_string()),
                        )
                        .await;
                        Ok(text_output(
                            format!("Marked unit {id} as failed"),
                            json!({
                                "action": "fail",
                                "id": id,
                                "reason": params["reason"],
                                "unit": unit_value,
                            }),
                        ))
                    }
                    Err(e) => Ok(ToolOutput::error(e.to_string())),
                }
            }
            "delete" => {
                let id = params["id"]
                    .as_str()
                    .ok_or_else(|| crate::error::Error::Tool("delete requires 'id'".into()))?;
                match mana_core::api::delete_unit(&mana_dir, id) {
                    Ok(result) => {
                        let summary =
                            format!("mana delta: deleted {} ({})", result.id, result.title);
                        set_mana_delta_widget(&ctx, summary.clone(), None).await;
                        Ok(text_output(
                            format!("Deleted unit {} ({})", result.id, result.title),
                            json!({ "action": "delete", "id": result.id, "title": result.title }),
                        ))
                    }
                    Err(e) => Ok(ToolOutput::error(e.to_string())),
                }
            }
            "dep_add" => {
                let from_id = params["from_id"].as_str().ok_or_else(|| {
                    crate::error::Error::Tool("dep_add requires 'from_id'".into())
                })?;
                let dep_id = params["dep_id"]
                    .as_str()
                    .ok_or_else(|| crate::error::Error::Tool("dep_add requires 'dep_id'".into()))?;
                match mana_core::api::add_dep(&mana_dir, from_id, dep_id) {
                    Ok(result) => {
                        let summary = format!(
                            "mana delta: dependency added {} -> {}",
                            result.from_id, result.to_id
                        );
                        set_mana_delta_widget(&ctx, summary.clone(), None).await;
                        Ok(text_output(
                            format!(
                                "Added dependency: {} depends on {}",
                                result.from_id, result.to_id
                            ),
                            json!({ "action": "dep_add", "from_id": result.from_id, "dep_id": result.to_id }),
                        ))
                    }
                    Err(e) => Ok(ToolOutput::error(e.to_string())),
                }
            }
            "dep_remove" => {
                let from_id = params["from_id"].as_str().ok_or_else(|| {
                    crate::error::Error::Tool("dep_remove requires 'from_id'".into())
                })?;
                let dep_id = params["dep_id"].as_str().ok_or_else(|| {
                    crate::error::Error::Tool("dep_remove requires 'dep_id'".into())
                })?;
                match mana_core::api::remove_dep(&mana_dir, from_id, dep_id) {
                    Ok(result) => {
                        let summary = format!(
                            "mana delta: dependency removed {} -> {}",
                            result.from_id, result.to_id
                        );
                        set_mana_delta_widget(&ctx, summary.clone(), None).await;
                        Ok(text_output(
                            format!(
                                "Removed dependency: {} no longer depends on {}",
                                result.from_id, result.to_id
                            ),
                            json!({ "action": "dep_remove", "from_id": result.from_id, "dep_id": result.to_id }),
                        ))
                    }
                    Err(e) => Ok(ToolOutput::error(e.to_string())),
                }
            }
            "fact_create" => {
                let title = parse_optional_string(&params["title"])
                    .or_else(|| parse_optional_string(&params["fact_title"]))
                    .ok_or_else(|| {
                        crate::error::Error::Tool("fact_create requires 'title'".into())
                    })?;
                let verify = parse_optional_string(&params["verify"]).ok_or_else(|| {
                    crate::error::Error::Tool("fact_create requires 'verify'".into())
                })?;
                // Transitional compatibility: runtime still accepts legacy `paths_csv`, but
                // the model-facing schema advertises only canonical `paths`.
                let fact_paths = parse_optional_string(&params["paths_csv"]).or_else(|| {
                    let paths = parse_csv_strings(&params["paths"], "paths").ok()?;
                    if paths.is_empty() {
                        None
                    } else {
                        Some(paths.join(","))
                    }
                });
                let fact_params = mana_core::ops::fact::FactParams {
                    title,
                    verify,
                    description: parse_optional_string(&params["description"]),
                    paths: fact_paths,
                    ttl_days: params["ttl_days"].as_i64(),
                    pass_ok: params["pass_ok"].as_bool().unwrap_or(true),
                };
                match mana_core::api::create_fact(&mana_dir, fact_params) {
                    Ok(result) => {
                        let summary = format!(
                            "mana delta: created fact {} ({})",
                            result.unit_id, result.unit.title
                        );
                        set_mana_delta_widget(&ctx, summary.clone(), Some("fact".into())).await;
                        Ok(text_output(
                            format!("Created fact {} ({})", result.unit_id, result.unit.title),
                            json!({
                                "action": "fact_create",
                                "unit_id": result.unit_id,
                                "unit": {
                                    "id": result.unit.id,
                                    "title": result.unit.title,
                                    "unit_type": result.unit.unit_type,
                                    "verify": result.unit.verify,
                                    "paths": result.unit.paths,
                                    "stale_after": result.unit.stale_after,
                                }
                            }),
                        ))
                    }
                    Err(e) => Ok(ToolOutput::error(e.to_string())),
                }
            }
            "fact_verify" => match mana_core::api::verify_facts(&mana_dir) {
                Ok(result) => Ok(text_output(
                    format!(
                        "Verified {}/{} facts · {} stale · {} failing · {} suspect",
                        result.verified_count,
                        result.total_facts,
                        result.stale_count,
                        result.failing_count,
                        result.suspect_count
                    ),
                    json!({
                        "total_facts": result.total_facts,
                        "verified_count": result.verified_count,
                        "stale_count": result.stale_count,
                        "failing_count": result.failing_count,
                        "suspect_count": result.suspect_count,
                    }),
                )),
                Err(e) => Ok(ToolOutput::error(e.to_string())),
            },
            "logs" => {
                if let Some(run_id) = params["run_id"].as_str() {
                    if let Some(state) = run_state_snapshot(&self.run_store, Some(run_id)) {
                        let text = if state.log_lines.is_empty() {
                            format!(
                                "No native stream events captured yet for run {}.",
                                state.run_id
                            )
                        } else {
                            truncate_with_note(&state.log_lines.join("\n"))
                        };
                        return Ok(text_output(
                            text,
                            serde_json::to_value(&state).unwrap_or(serde_json::Value::Null),
                        ));
                    }
                    return Ok(ToolOutput::error(format!(
                        "Unknown native mana run_id: {run_id}"
                    )));
                }

                let id = params["id"].as_str().ok_or_else(|| {
                    crate::error::Error::Tool("logs requires 'id' or 'run_id'".into())
                })?;
                match find_all_logs(id) {
                    Ok(paths) if paths.is_empty() => Ok(ToolOutput::text(format!(
                        "No logs for unit {id}. Has it been dispatched with mana run?"
                    ))),
                    Ok(paths) => {
                        let mut sections = Vec::new();
                        for path in &paths {
                            let filename = path
                                .file_name()
                                .and_then(|n| n.to_str())
                                .unwrap_or("unknown");
                            let body = std::fs::read_to_string(path).unwrap_or_else(|e| {
                                format!("(error reading {}: {e})", path.display())
                            });
                            sections.push(format!("═══ {filename} ═══\n\n{body}"));
                        }
                        let text = truncate_with_note(&sections.join("\n\n"));
                        Ok(text_output(text, json!({ "unit_id": id, "logs": paths })))
                    }
                    Err(e) => Ok(ToolOutput::error(e.to_string())),
                }
            }
            "agents" => match load_agents() {
                Ok(agents) => Ok(json_output(&agents)),
                Err(e) => Ok(ToolOutput::error(e.to_string())),
            },
            "reparent" => {
                let id = params["id"]
                    .as_str()
                    .ok_or_else(|| crate::error::Error::Tool("reparent requires 'id'".into()))?;
                let parent = parse_optional_string(&params["parent"]);
                let reason = parse_optional_string(&params["reason"])
                    .or_else(|| parse_optional_string(&params["parent_reason"]));
                let unit_path = mana_core::discovery::find_unit_file(&mana_dir, id)
                    .map_err(|error| crate::error::Error::Tool(error.to_string()))?;
                let mut unit = mana_core::unit::Unit::from_file(&unit_path)
                    .map_err(|error| crate::error::Error::Tool(error.to_string()))?;
                let old_parent = unit.parent.clone();
                unit.parent = parent.clone();
                unit.updated_at = chrono::Utc::now();
                unit.to_file(&unit_path)
                    .map_err(|error| crate::error::Error::Tool(error.to_string()))?;
                let summary = format!(
                    "mana delta: reparented {id} from {} to {}",
                    old_parent.as_deref().unwrap_or("<root>"),
                    parent.as_deref().unwrap_or("<root>")
                );
                set_mana_delta_widget(&ctx, summary.clone(), reason.clone()).await;
                Ok(text_output(
                    summary,
                    json!({
                        "action": "reparent",
                        "id": id,
                        "old_parent": old_parent,
                        "new_parent": parent,
                        "reason": reason,
                    }),
                ))
            }
            "run_state" | "evaluate" => {
                let run_id = params["run_id"].as_str();
                match run_state_snapshot(&self.run_store, run_id) {
                    Some(state) => {
                        if action == "evaluate" {
                            Ok(evaluate_run_output(&state))
                        } else {
                            Ok(run_state_output(&state))
                        }
                    }
                    None => {
                        let which = run_id.unwrap_or("latest");
                        Ok(ToolOutput::error(format!(
                            "No native mana run state available for {which}. Start one with mana(action=\"run\")."
                        )))
                    }
                }
            }
            "next" => {
                let count = params["count"].as_u64().unwrap_or(1).max(1) as usize;
                match mana_core::api::load_index(&mana_dir) {
                    Ok(index) => {
                        let ready: Vec<&mana_core::index::IndexEntry> = index
                            .units
                            .iter()
                            .filter(|e| {
                                e.status == mana_core::unit::Status::Open
                                    && e.has_verify
                                    && !e.feature
                                    && mana_core::blocking::check_blocked(e, &index).is_none()
                                    && !index.units.iter().any(|child| {
                                        child.parent.as_deref() == Some(e.id.as_str())
                                            && child.status != mana_core::unit::Status::Closed
                                    })
                            })
                            .collect();

                        let mut reverse_deps: std::collections::HashMap<String, Vec<String>> =
                            std::collections::HashMap::new();
                        for entry in &index.units {
                            for dep_id in &entry.dependencies {
                                reverse_deps
                                    .entry(dep_id.clone())
                                    .or_default()
                                    .push(entry.id.clone());
                            }
                        }

                        fn count_transitive_unblocks(
                            unit_id: &str,
                            reverse_deps: &std::collections::HashMap<String, Vec<String>>,
                        ) -> usize {
                            let mut visited = std::collections::HashSet::new();
                            let mut stack = vec![unit_id.to_string()];
                            while let Some(current) = stack.pop() {
                                if let Some(dependents) = reverse_deps.get(&current) {
                                    for dep in dependents {
                                        if visited.insert(dep.clone()) {
                                            stack.push(dep.clone());
                                        }
                                    }
                                }
                            }
                            visited.len()
                        }

                        fn score_unit(
                            entry: &mana_core::index::IndexEntry,
                            unblock_count: usize,
                        ) -> f64 {
                            let priority_score = (5u8.saturating_sub(entry.priority)) as f64 * 10.0;
                            let unblock_score = (unblock_count as f64 * 5.0).min(50.0);
                            let age_days = std::time::SystemTime::now()
                                .duration_since(std::time::UNIX_EPOCH)
                                .unwrap_or_default()
                                .as_secs()
                                / 86_400;
                            let created_days = entry.created_at.timestamp().max(0) as u64 / 86_400;
                            let age_days = age_days.saturating_sub(created_days) as f64;
                            let age_score = age_days.min(30.0);
                            let attempt_penalty = (entry.attempts as f64 * 3.0).min(15.0);
                            priority_score + unblock_score + age_score - attempt_penalty
                        }

                        let mut scored: Vec<ScoredUnit> = ready
                            .iter()
                            .map(|entry| {
                                let transitive_count =
                                    count_transitive_unblocks(&entry.id, &reverse_deps);
                                let unblocks =
                                    reverse_deps.get(&entry.id).cloned().unwrap_or_default();
                                let score = score_unit(entry, transitive_count);
                                let now_days = std::time::SystemTime::now()
                                    .duration_since(std::time::UNIX_EPOCH)
                                    .unwrap_or_default()
                                    .as_secs()
                                    / 86_400;
                                let created_days =
                                    entry.created_at.timestamp().max(0) as u64 / 86_400;
                                let age_days = now_days.saturating_sub(created_days);
                                ScoredUnit {
                                    id: entry.id.clone(),
                                    title: entry.title.clone(),
                                    priority: entry.priority,
                                    score,
                                    unblocks,
                                    age_days,
                                    attempts: entry.attempts,
                                }
                            })
                            .collect();

                        scored.sort_by(|a, b| {
                            b.score
                                .partial_cmp(&a.score)
                                .unwrap_or(std::cmp::Ordering::Equal)
                        });
                        scored.truncate(count);
                        Ok(text_output(
                            scored_units_to_text(&scored),
                            serde_json::to_value(&scored).unwrap_or(serde_json::Value::Null),
                        ))
                    }
                    Err(e) => Ok(ToolOutput::error(e.to_string())),
                }
            }
            "tree" => {
                let id = params["id"].as_str();
                let lines = if let Some(root_id) = id {
                    match mana_core::api::get_tree(&mana_dir, root_id) {
                        Ok(tree) => {
                            let mut lines = Vec::new();
                            tree_lines(&tree, 0, &mut lines);
                            lines
                        }
                        Err(tree_err) => match mana_core::ops::show::get(&mana_dir, root_id) {
                            Ok(result) if result.unit.is_archived => {
                                return Ok(ToolOutput::error(format!(
                                    "Archived unit {root_id} can be shown but not rendered in tree view. Tree only includes active units."
                                )));
                            }
                            Ok(_) | Err(_) => return Ok(ToolOutput::error(tree_err.to_string())),
                        },
                    }
                } else {
                    match mana_core::api::load_index(&mana_dir) {
                        Ok(index) => {
                            let roots: Vec<_> = index
                                .units
                                .iter()
                                .filter(|entry| entry.parent.is_none())
                                .map(|entry| entry.id.clone())
                                .collect();
                            let mut lines = Vec::new();
                            for (idx, root_id) in roots.iter().enumerate() {
                                match mana_core::api::get_tree(&mana_dir, root_id) {
                                    Ok(tree) => {
                                        if idx > 0 {
                                            lines.push(String::new());
                                        }
                                        tree_lines(&tree, 0, &mut lines);
                                    }
                                    Err(e) => return Ok(ToolOutput::error(e.to_string())),
                                }
                            }
                            lines
                        }
                        Err(e) => return Ok(ToolOutput::error(e.to_string())),
                    }
                };
                let text = if lines.is_empty() {
                    "(no units)".to_string()
                } else {
                    truncate_with_note(&lines.join("\n"))
                };
                Ok(text_output(text, json!({ "root": id })))
            }
            "run" => {
                let requested_jobs = params["jobs"].as_u64().unwrap_or(4) as u32;
                let run_params = NativeRunParams {
                    target: target_from_params(&params)?,
                    jobs: requested_jobs.max(1),
                    dry_run: params["dry_run"].as_bool().unwrap_or(false),
                    loop_mode: params["loop"].as_bool().unwrap_or(false),
                    keep_going: params["keep_going"].as_bool().unwrap_or(false),
                    timeout: params["timeout"].as_u64().unwrap_or(30) as u32,
                    idle_timeout: params["idle_timeout"].as_u64().unwrap_or(5) as u32,
                    json_stream: true,
                    review: params["review"].as_bool().unwrap_or(false),
                    run_model: None,
                    run_thinking: None,
                };
                let target_ids = target_ids_from_run_target(&run_params.target);
                if !target_ids.is_empty() {
                    if let Some(guardrail) = retry_guardrail_for_targets(&mana_dir, &target_ids)? {
                        return Ok(ToolOutput {
                            content: vec![imp_llm::ContentBlock::Text {
                                text: "mana run blocked: failed units must be updated before retry"
                                    .to_string(),
                            }],
                            details: guardrail,
                            is_error: true,
                        });
                    }
                }
                let scope = scope_from_target(&run_params.target);
                let run_id = {
                    let mut store = self.run_store.lock().map_err(|_| {
                        crate::error::Error::Tool("mana run state lock poisoned".into())
                    })?;
                    let run_id = store.start_run(scope.clone(), &run_params);
                    store.persist();
                    run_id
                };

                let started = run_started_output(&scope, &run_id, &run_params);
                spawn_background_run(
                    mana_dir.clone(),
                    run_params,
                    ctx,
                    self.run_store.clone(),
                    run_id,
                );
                return Ok(started);
            }
            other => Ok(ToolOutput::error(format!(
                "Unknown action: {other}. Use: status, list, show, create, close, update, run, run_state, evaluate, claim, release, logs, agents, next, tree, reopen, verify, fail, delete, dep_add, dep_remove, fact_create, fact_verify, notes_append, decision_add, decision_resolve"
            ))),
        }
    }
}

#[cfg(test)]
mod tests {
    use std::sync::Arc;

    use async_trait::async_trait;
    use serde_json::json;
    use tokio::sync::mpsc;

    use super::{
        compact_list_output, evaluate_run_output, mana_close_error_output,
        mana_close_force_reason_error, mana_guide_output, mana_run_core, mana_template_output,
        parent_placement_details, parse_guide_topic, parse_template_kind,
        retry_guardrail_for_targets, run_state_output, runtime_info_for_run, stream_event_line,
        target_ids_from_run_target, unix_time_ms, validate_mana_action, validate_native_run_target,
        worker_options_for_native_unit, GuideTopic, ManaRunStore, ManaTool, NativeRunState,
        RunTarget, RunUnitStatus, TemplateKind, INTERRUPTED_RUN_STALE_MS,
    };
    use crate::tools::{FileCache, FileTracker, Tool, ToolContext, ToolUpdate};
    use crate::ui::{NotifyLevel, NullInterface, WidgetContent};

    enum ManaResult {
        ModeBlocked(String),
        Attempted(crate::tools::ToolOutput),
    }

    static ENV_LOCK: std::sync::Mutex<()> = std::sync::Mutex::new(());

    type TestWidgets = Arc<std::sync::Mutex<Vec<(String, Option<WidgetContent>)>>>;

    struct TestUi {
        widgets: TestWidgets,
    }

    #[async_trait]
    impl crate::ui::UserInterface for TestUi {
        fn has_ui(&self) -> bool {
            true
        }

        async fn notify(&self, _message: &str, _level: NotifyLevel) {}

        async fn confirm(&self, _title: &str, _message: &str) -> Option<bool> {
            None
        }

        async fn select_with_context(
            &self,
            _title: &str,
            _context: &str,
            _options: &[crate::ui::SelectOption],
        ) -> Option<usize> {
            None
        }

        async fn input_with_context(
            &self,
            _title: &str,
            _context: &str,
            _placeholder: &str,
        ) -> Option<String> {
            None
        }

        async fn set_status(&self, _key: &str, _text: Option<&str>) {}

        async fn set_widget(&self, key: &str, content: Option<WidgetContent>) {
            self.widgets
                .lock()
                .unwrap()
                .push((key.to_string(), content));
        }

        async fn custom(&self, _component: crate::ui::ComponentSpec) -> Option<serde_json::Value> {
            None
        }
    }

    async fn run_with_mode(mode_name: &str, action: &str) -> ManaResult {
        let prev = {
            let _guard = ENV_LOCK.lock().unwrap();
            let prev = std::env::var("IMP_MODE").ok();
            std::env::set_var("IMP_MODE", mode_name);
            prev
        };

        let dir = tempfile::tempdir().unwrap();
        let mana_dir = dir.path().join(".mana");
        std::fs::create_dir_all(&mana_dir).unwrap();
        std::fs::write(mana_dir.join("config.yaml"), "project: test\nnext_id: 2\n").unwrap();
        std::fs::write(
            mana_dir.join("1-test-unit.md"),
            "---\nid: '1'\ntitle: Test unit\nstatus: open\npriority: 2\ncreated_at: '2026-03-28T00:00:00Z'\nupdated_at: '2026-03-28T00:00:00Z'\nverify: test -n \"ok\"\n---\n\nbody\n",
        )
        .unwrap();
        let (tx, _rx) = mpsc::channel::<ToolUpdate>(1);
        let (cmd_tx, _cmd_rx) = mpsc::channel(16);
        let ctx = ToolContext {
            cwd: dir.path().to_path_buf(),
            cancelled: Arc::new(std::sync::atomic::AtomicBool::new(false)),
            update_tx: tx,
            command_tx: cmd_tx,
            ui: Arc::new(NullInterface),
            file_cache: Arc::new(FileCache::new()),
            checkpoint_state: Arc::new(crate::tools::CheckpointState::new()),
            file_tracker: Arc::new(std::sync::Mutex::new(FileTracker::new())),
            anchor_store: Arc::new(crate::tools::AnchorStore::new()),
            lua_tool_loader: None,
            mode: crate::config::AgentMode::from_name(mode_name)
                .unwrap_or(crate::config::AgentMode::Full),
            read_max_lines: 500,
            turn_mana_review: Arc::new(std::sync::Mutex::new(
                crate::mana_review::TurnManaReviewAccumulator::default(),
            )),
            config: Arc::new(crate::config::Config::default()),
            run_policy: Default::default(),
            supporting_provenance: Vec::new(),
        };

        let tool = ManaTool::default();
        let outcome = tool
            .execute("call_1", json!({ "action": action, "id": "1" }), ctx)
            .await;

        match prev {
            Some(v) => {
                let _guard = ENV_LOCK.lock().unwrap();
                std::env::set_var("IMP_MODE", v)
            }
            None => {
                let _guard = ENV_LOCK.lock().unwrap();
                std::env::remove_var("IMP_MODE")
            }
        }

        match outcome {
            Err(crate::error::Error::Tool(msg)) => {
                ManaResult::Attempted(crate::tools::ToolOutput::error(msg))
            }
            Err(e) => ManaResult::Attempted(crate::tools::ToolOutput::error(e.to_string())),
            Ok(output) => {
                if output.is_error {
                    if let Some(text) = output.text_content() {
                        if text.contains("mode") && text.contains(action) {
                            return ManaResult::ModeBlocked(text.to_string());
                        }
                    }
                }
                ManaResult::Attempted(output)
            }
        }
    }

    fn ctx_with_mode(
        dir: &std::path::Path,
        mode: crate::config::AgentMode,
    ) -> (ToolContext, tempfile::TempDir) {
        let mana_dir = dir.join(".mana");
        std::fs::create_dir_all(&mana_dir).unwrap();
        std::fs::write(mana_dir.join("config.yaml"), "project: test\nnext_id: 2\n").unwrap();
        std::fs::write(
            mana_dir.join("1-test-unit.md"),
            "---\nid: '1'\ntitle: Test unit\nstatus: open\npriority: 2\ncreated_at: '2026-03-28T00:00:00Z'\nupdated_at: '2026-03-28T00:00:00Z'\nverify: test -n \"ok\"\n---\n\nbody\n",
        )
        .unwrap();
        let (tx, _rx) = mpsc::channel::<ToolUpdate>(1);
        let (cmd_tx, _cmd_rx) = mpsc::channel(16);
        let ctx = ToolContext {
            cwd: dir.to_path_buf(),
            cancelled: Arc::new(std::sync::atomic::AtomicBool::new(false)),
            update_tx: tx,
            command_tx: cmd_tx,
            ui: Arc::new(NullInterface),
            file_cache: Arc::new(FileCache::new()),
            checkpoint_state: Arc::new(crate::tools::CheckpointState::new()),
            file_tracker: Arc::new(std::sync::Mutex::new(FileTracker::new())),
            anchor_store: Arc::new(crate::tools::AnchorStore::new()),
            lua_tool_loader: None,
            mode,
            read_max_lines: 500,
            turn_mana_review: Arc::new(std::sync::Mutex::new(
                crate::mana_review::TurnManaReviewAccumulator::default(),
            )),
            config: Arc::new(crate::config::Config::default()),
            run_policy: Default::default(),
            supporting_provenance: Vec::new(),
        };
        (ctx, tempfile::tempdir().unwrap())
    }

    fn ctx_with_ui(
        dir: &std::path::Path,
        mode: crate::config::AgentMode,
    ) -> (ToolContext, tempfile::TempDir, TestWidgets) {
        let mana_dir = dir.join(".mana");
        std::fs::create_dir_all(&mana_dir).unwrap();
        std::fs::write(mana_dir.join("config.yaml"), "project: test\nnext_id: 2\n").unwrap();
        std::fs::write(
            mana_dir.join("1-test-unit.md"),
            "---\nid: '1'\ntitle: Test unit\nstatus: open\npriority: 2\ncreated_at: '2026-03-28T00:00:00Z'\nupdated_at: '2026-03-28T00:00:00Z'\nverify: test -n \"ok\"\n---\n\nbody\n",
        )
        .unwrap();
        let widgets = Arc::new(std::sync::Mutex::new(Vec::new()));
        let (tx, _rx) = mpsc::channel::<ToolUpdate>(1);
        let (cmd_tx, _cmd_rx) = mpsc::channel(16);
        let ctx = ToolContext {
            cwd: dir.to_path_buf(),
            cancelled: Arc::new(std::sync::atomic::AtomicBool::new(false)),
            update_tx: tx,
            command_tx: cmd_tx,
            ui: Arc::new(TestUi {
                widgets: widgets.clone(),
            }),
            file_cache: Arc::new(FileCache::new()),
            checkpoint_state: Arc::new(crate::tools::CheckpointState::new()),
            file_tracker: Arc::new(std::sync::Mutex::new(FileTracker::new())),
            anchor_store: Arc::new(crate::tools::AnchorStore::new()),
            lua_tool_loader: None,
            mode,
            read_max_lines: 500,
            turn_mana_review: Arc::new(std::sync::Mutex::new(
                crate::mana_review::TurnManaReviewAccumulator::default(),
            )),
            config: Arc::new(crate::config::Config::default()),
            run_policy: Default::default(),
            supporting_provenance: Vec::new(),
        };
        (ctx, tempfile::tempdir().unwrap(), widgets)
    }

    async fn run_with_ctx_mode(mode: crate::config::AgentMode, action: &str) -> ManaResult {
        let dir = tempfile::tempdir().unwrap();
        let (ctx, _keep) = ctx_with_mode(dir.path(), mode);
        let tool = ManaTool::default();
        let outcome = tool
            .execute("call_ctx", json!({ "action": action, "id": "1" }), ctx)
            .await;
        match outcome {
            Err(crate::error::Error::Tool(msg)) => {
                ManaResult::Attempted(crate::tools::ToolOutput::error(msg))
            }
            Err(e) => ManaResult::Attempted(crate::tools::ToolOutput::error(e.to_string())),
            Ok(output) => {
                if output.is_error {
                    if let Some(text) = output.text_content() {
                        if text.contains("mode") && text.contains(action) {
                            return ManaResult::ModeBlocked(text.to_string());
                        }
                    }
                }
                ManaResult::Attempted(output)
            }
        }
    }

    #[tokio::test]
    async fn create_sets_mana_delta_widget_and_action_details() {
        let dir = tempfile::tempdir().unwrap();
        let (ctx, _keep, widgets) = ctx_with_ui(dir.path(), crate::config::AgentMode::Full);
        let tool = ManaTool::default();
        let result = tool
            .execute(
                "call_create_widget",
                json!({ "action": "create", "title": "Widget unit", "verify": "test -n ok" }),
                ctx,
            )
            .await
            .unwrap();

        assert_eq!(result.details["action"], "create");
        assert_eq!(result.details["unit"]["title"], "Widget unit");
        let widgets = widgets.lock().unwrap();
        assert!(widgets.iter().any(|(key, content)| {
            key == "mana"
                && matches!(content, Some(WidgetContent::Lines(lines)) if lines.iter().any(|line| line.contains("mana delta: created 2 · Widget unit")))
        }));
    }

    #[tokio::test]
    async fn decision_add_sets_mana_delta_widget_and_action_details() {
        let dir = tempfile::tempdir().unwrap();
        let (ctx, _keep, widgets) = ctx_with_ui(dir.path(), crate::config::AgentMode::Full);
        let tool = ManaTool::default();
        let result = tool
            .execute(
                "call_decision_widget",
                json!({ "action": "decision_add", "id": "1", "description": "Choose retry limit" }),
                ctx,
            )
            .await
            .unwrap();

        assert_eq!(result.details["action"], "decision_add");
        assert_eq!(result.details["unit"]["decisions"][0], "Choose retry limit");
        let widgets = widgets.lock().unwrap();
        assert!(widgets.iter().any(|(key, content)| {
            key == "mana"
                && matches!(content, Some(WidgetContent::Lines(lines)) if lines.iter().any(|line| line.contains("mana delta: decision added on 1 · Test unit")))
        }));
    }

    #[tokio::test]
    async fn worker_blocks_create() {
        match run_with_mode("worker", "create").await {
            ManaResult::ModeBlocked(_) => {}
            ManaResult::Attempted(out) => {
                panic!(
                    "worker should block 'create', got: {:?}",
                    out.text_content()
                )
            }
        }
    }

    #[tokio::test]
    async fn create_supports_rich_unit_fields() {
        let dir = tempfile::tempdir().unwrap();
        let (ctx, _keep) = ctx_with_mode(dir.path(), crate::config::AgentMode::Full);
        let tool = ManaTool::default();
        let result = tool
            .execute(
                "call_create_rich",
                json!({
                    "action": "create",
                    "title": "Rich unit",
                    "description": "Implement the thing",
                    "acceptance": "- works\n- tested",
                    "notes": "start here",
                    "design": "follow existing pattern",
                    "verify": "test -n ok",
                    "labels": ["feature", "backend"],
                    "deps": ["1"],
                    "paths": ["src/lib.rs", "src/auth.rs"],
                    "requires": ["auth-api"],
                    "produces": ["auth-fix"],
                    "decisions": ["Confirm whether auth should stay sync"],
                    "feature": true,
                    "fail_first": true,
                    "verify_timeout": 12,
                    "force": false
                }),
                ctx,
            )
            .await
            .unwrap();
        let unit = &result.details["unit"];
        assert_eq!(unit["acceptance"], "- works\n- tested");
        assert_eq!(unit["labels"][0], "feature");
        assert_eq!(unit["dependencies"][0], "1");
        assert_eq!(unit["paths"][0], "src/lib.rs");
        assert_eq!(unit["requires"][0], "auth-api");
        assert_eq!(unit["produces"][0], "auth-fix");
        assert_eq!(
            unit["decisions"][0],
            "Confirm whether auth should stay sync"
        );
        assert_eq!(unit["feature"], true);
        assert_eq!(unit["fail_first"], true);
        assert_eq!(unit["verify_timeout"], 12);
    }

    #[test]
    fn parent_placement_details_warns_when_parent_reason_missing() {
        let details = parent_placement_details(Some("304"), None);

        assert_eq!(details["parent"], json!("304"));
        assert_eq!(details["warning"], json!("parent_reason_missing"));
        assert!(details["hint"]
            .as_str()
            .unwrap_or_default()
            .contains("confirm it belongs"));
    }

    #[test]
    fn parent_placement_details_accepts_explicit_reason() {
        let details = parent_placement_details(
            Some("313"),
            Some("This is workflow reliability work, not tool schema audit."),
        );

        assert_eq!(details["warning"], serde_json::Value::Null);
        assert_eq!(
            details["parent_reason"],
            json!("This is workflow reliability work, not tool schema audit.")
        );
    }

    #[test]
    fn close_force_requires_reason_with_evidence() {
        let output = mana_close_force_reason_error("313.2");

        assert!(output.is_error);
        assert_eq!(output.details["action"], json!("close"));
        assert_eq!(output.details["missing"], json!(["reason"]));
        assert!(output
            .text_content()
            .unwrap_or_default()
            .contains("equivalent verify evidence"));
    }

    #[test]
    fn close_verify_errors_include_recovery_hint() {
        let output = mana_close_error_output(
            "313.2",
            "Verify command failed during close: cargo test -p imp-core one two --no-run"
                .to_string(),
        );

        assert!(output.is_error);
        assert_eq!(output.details["verify_related"], json!(true));
        assert_eq!(output.details["force_requires_reason"], json!(true));
        let hint = output.details["recovery_hint"].as_str().unwrap_or_default();
        assert!(hint.contains("equivalent focused checks"));
    }

    #[test]
    fn close_non_verify_errors_stay_plain() {
        let output = mana_close_error_output("313.2", "Unit not found".to_string());

        assert!(output.is_error);
        assert_eq!(output.details["verify_related"], json!(false));
        assert!(output.details["recovery_hint"].is_null());
        assert_eq!(output.text_content().unwrap_or_default(), "Unit not found");
    }

    #[test]
    fn mana_guide_outputs_concise_structured_topic() {
        let output = mana_guide_output(GuideTopic::Verify);

        assert!(!output.is_error);
        assert_eq!(output.details["action"], json!("guide"));
        assert_eq!(output.details["topic"], json!("verify"));
        assert!(output.details["guidance"].as_array().unwrap().len() <= 3);
        assert!(output
            .text_content()
            .unwrap_or_default()
            .contains("mana guide: verify"));
    }

    #[test]
    fn mana_overview_guide_prefers_update_before_create() {
        let output = mana_guide_output(GuideTopic::Overview);
        let text = output.text_content().unwrap_or_default();

        assert!(text.contains("Before creating"));
        assert!(text.contains("update"));
        assert!(text.contains("notes"));
    }

    #[test]
    fn compact_list_output_caps_and_guides_toward_existing_units() {
        let now = chrono::Utc::now();
        let entries: Vec<mana_core::index::IndexEntry> = (0..60)
            .map(|i| mana_core::index::IndexEntry {
                id: format!("330.{i}"),
                title: format!("Task {i}"),
                handle: None,
                status: mana_core::unit::Status::Open,
                priority: 1,
                parent: Some("330".to_string()),
                dependencies: Vec::new(),
                labels: vec!["mana".to_string()],
                assignee: None,
                updated_at: now,
                produces: Vec::new(),
                requires: Vec::new(),
                has_verify: true,
                verify: Some("cargo test".to_string()),
                created_at: now,
                claimed_by: None,
                attempts: 0,
                paths: vec!["crates/imp-core/src/tools/mana.rs".to_string()],
                kind: mana_core::unit::UnitType::Task,
                feature: false,
                has_decisions: false,
            })
            .collect();

        let output = compact_list_output(&entries, Some(100));
        let text = output.text_content().unwrap_or_default();

        assert!(!output.is_error);
        assert_eq!(output.details["total"], json!(60));
        assert_eq!(output.details["shown"], json!(50));
        assert_eq!(output.details["limit"], json!(50));
        assert_eq!(output.details["truncated"], json!(true));
        assert_eq!(output.details["units"].as_array().unwrap().len(), 50);
        assert!(text.contains("Prefer `show` + `update`/`notes_append`"));
        assert!(text.contains("10 more omitted"));
        assert!(!text.contains("verify\":\"cargo test"));
    }

    #[test]
    fn create_validation_hint_prefers_existing_unit_when_title_missing() {
        let output = validate_mana_action("create", &json!({}))
            .expect("create without title should fail validation");

        assert!(output.is_error);
        assert!(output
            .text_content()
            .unwrap_or_default()
            .contains("Before creating, check list/show"));
    }

    #[test]
    fn mana_template_outputs_task_template() {
        let output = mana_template_output(TemplateKind::Task, Some(GuideTopic::Verify));

        assert!(!output.is_error);
        assert_eq!(output.details["action"], json!("template"));
        assert_eq!(output.details["kind"], json!("task"));
        assert_eq!(output.details["template"]["fail_first"], json!(true));
        assert!(output.details["template"]["verify"].is_string());
    }

    #[test]
    fn mana_guide_and_template_validate_topic_and_kind() {
        assert!(parse_guide_topic(&json!({ "topic": "orchestrate" })).is_ok());
        assert!(parse_guide_topic(&json!({ "topic": "bad" }))
            .unwrap_err()
            .to_string()
            .contains("Invalid mana guide topic"));
        assert!(parse_template_kind(&json!({ "kind": "fact" })).is_ok());
        assert!(parse_template_kind(&json!({ "kind": "job" }))
            .unwrap_err()
            .to_string()
            .contains("Invalid mana template kind"));
    }

    #[test]
    fn mana_schema_uses_canonical_fields_only() {
        let schema = ManaTool::default().parameters();
        let properties = schema["properties"].as_object().unwrap();

        assert!(properties.contains_key("action"));
        assert!(properties.contains_key("id"));
        assert!(properties.contains_key("run_id"));
        assert!(properties.contains_key("title"));
        assert!(properties.contains_key("description"));
        assert!(properties.contains_key("acceptance"));
        assert!(properties.contains_key("verify"));
        assert!(properties.contains_key("notes"));
        assert!(properties.contains_key("decisions"));
        assert!(properties.contains_key("paths"));
        assert!(properties.contains_key("deps"));
        assert!(properties.contains_key("labels"));
        assert!(properties.contains_key("targets"));
        assert!(properties.contains_key("scope"));
        assert!(properties.contains_key("path"));
        assert!(properties.contains_key("parent_reason"));
        let actions = properties["action"]["enum"].as_array().unwrap();
        assert!(actions.iter().any(|value| value == "reparent"));

        assert!(!properties.contains_key("mana_scope"));
        assert!(!properties.contains_key("mana_dir"));
        assert!(!properties.contains_key("paths_csv"));
        assert!(!properties.contains_key("fact_title"));
        assert!(!properties.contains_key("add_label"));
        assert!(!properties.contains_key("remove_label"));

        let kind_enum = properties["kind"]["enum"].as_array().unwrap();
        assert!(kind_enum.iter().any(|value| value == "task"));
        assert!(!kind_enum.iter().any(|value| value == "job"));
    }

    #[test]
    fn mana_validation_teaches_required_fields() {
        let output = validate_mana_action("notes_append", &json!({ "id": "304" }))
            .expect("notes_append without notes should fail validation");

        assert!(output.is_error);
        assert_eq!(output.details["action"], json!("notes_append"));
        assert_eq!(output.details["missing"], json!(["notes"]));
        assert_eq!(output.details["canonical_fields"], json!(["id", "notes"]));
        assert!(output
            .text_content()
            .unwrap_or_default()
            .contains("requires id and notes"));
    }

    #[test]
    fn mana_validation_rejects_path_when_paths_is_intended() {
        let output = validate_mana_action(
            "create",
            &json!({ "title": "Doc task", "path": "src/lib.rs" }),
        )
        .expect("create with path attachment should teach paths");

        assert!(output.is_error);
        assert_eq!(output.details["invalid"], json!(["path"]));
        assert!(output
            .text_content()
            .unwrap_or_default()
            .contains("Use path for project/.mana location"));
    }

    #[test]
    fn mana_validation_allows_valid_create_and_decision_add() {
        assert!(validate_mana_action("create", &json!({ "title": "Build thing" })).is_none());
        assert!(validate_mana_action(
            "decision_add",
            &json!({ "id": "304", "decisions": ["Use canonical names"] }),
        )
        .is_none());
    }

    #[test]
    fn mana_validation_requires_parent_for_reparent() {
        let output = validate_mana_action("reparent", &json!({ "id": "313.2" }))
            .expect("reparent without parent should fail validation");

        assert!(output.is_error);
        assert_eq!(output.details["missing"], json!(["parent"]));
        assert_eq!(
            output.details["canonical_fields"],
            json!(["id", "parent", "reason"])
        );
    }

    #[tokio::test]
    async fn reparent_moves_child_between_parents() {
        let dir = tempfile::tempdir().unwrap();
        let (ctx, _keep) = ctx_with_mode(dir.path(), crate::config::AgentMode::Full);
        let tool = ManaTool::default();

        let old_parent = tool
            .execute(
                "old_parent",
                json!({ "action": "create", "title": "Old Parent" }),
                ctx.clone(),
            )
            .await
            .unwrap();
        let old_parent_id = old_parent.details["unit"]["id"]
            .as_str()
            .unwrap()
            .to_string();
        let new_parent = tool
            .execute(
                "new_parent",
                json!({ "action": "create", "title": "New Parent" }),
                ctx.clone(),
            )
            .await
            .unwrap();
        let new_parent_id = new_parent.details["unit"]["id"]
            .as_str()
            .unwrap()
            .to_string();
        let child = tool
            .execute(
                "child",
                json!({ "action": "create", "title": "Child", "parent": old_parent_id, "parent_reason": "Initial grouping" }),
                ctx.clone(),
            )
            .await
            .unwrap();
        let child_id = child.details["unit"]["id"].as_str().unwrap().to_string();

        let moved = tool
            .execute(
                "move_child",
                json!({
                    "action": "reparent",
                    "id": child_id,
                    "parent": new_parent_id,
                    "reason": "Belongs under the new reliability epic"
                }),
                ctx.clone(),
            )
            .await
            .unwrap();

        assert!(!moved.is_error);
        assert_eq!(moved.details["action"], json!("reparent"));
        assert_eq!(moved.details["old_parent"], json!(old_parent_id));
        assert_eq!(moved.details["new_parent"], json!(new_parent_id));
        assert!(moved
            .text_content()
            .unwrap_or_default()
            .contains("reparented"));
    }

    #[tokio::test]
    async fn update_supports_acceptance_labels_and_decisions() {
        let dir = tempfile::tempdir().unwrap();
        let (ctx, _keep) = ctx_with_mode(dir.path(), crate::config::AgentMode::Full);
        let tool = ManaTool::default();
        let _created = tool
            .execute(
                "call_create_update_target",
                json!({ "action": "create", "title": "Update target", "verify": "test -n ok" }),
                ctx,
            )
            .await
            .unwrap();

        let dir2 = tempfile::tempdir().unwrap();
        let (ctx2, _keep2) = ctx_with_mode(dir2.path(), crate::config::AgentMode::Full);
        std::fs::write(
            dir2.path().join(".mana").join("1-test-unit.md"),
            "---\nid: '1'\ntitle: Test unit\nstatus: open\npriority: 2\ncreated_at: '2026-03-28T00:00:00Z'\nupdated_at: '2026-03-28T00:00:00Z'\nverify: test -n \"ok\"\n---\n\nbody\n",
        ).unwrap();
        let result = tool
            .execute(
                "call_update_rich",
                json!({
                    "action": "update",
                    "id": "1",
                    "acceptance": "must pass auth flow",
                    "labels": ["backend"],
                    "decisions": ["Choose retry limit"],
                    "resolve_decisions": []
                }),
                ctx2,
            )
            .await
            .unwrap();
        let unit = &result.details["unit"];
        assert_eq!(unit["acceptance"], "must pass auth flow");
        assert_eq!(
            unit["labels"].as_array().cloned().unwrap_or_default(),
            vec![json!("backend")]
        );
        assert_eq!(unit["decisions"][0], "Choose retry limit");
    }

    #[tokio::test]
    async fn create_respects_verify_lint_by_default() {
        let dir = tempfile::tempdir().unwrap();
        let (ctx, _keep) = ctx_with_mode(dir.path(), crate::config::AgentMode::Full);
        let tool = ManaTool::default();
        let result = tool
            .execute(
                "call_create_lint",
                json!({ "action": "create", "title": "Weak verify", "verify": "echo done" }),
                ctx,
            )
            .await
            .unwrap();
        assert!(result.is_error, "weak verify should be rejected by default");
        let text = result.text_content().unwrap_or("");
        assert!(text.contains("Verify command has lint errors") || text.contains("verify"));
    }

    #[tokio::test]
    async fn native_verify_reopen_and_fact_actions_work() {
        let dir = tempfile::tempdir().unwrap();
        let mana_dir = dir.path().join(".mana");
        std::fs::create_dir_all(&mana_dir).unwrap();
        std::fs::write(mana_dir.join("config.yaml"), "project: test\nnext_id: 2\n").unwrap();
        std::fs::write(
            mana_dir.join("1-test-unit.md"),
            "---\nid: '1'\ntitle: Test unit\nstatus: closed\npriority: 2\ncreated_at: '2026-03-28T00:00:00Z'\nupdated_at: '2026-03-28T00:00:00Z'\nverify: test -n \"ok\"\nclosed_at: '2026-03-28T00:00:00Z'\nclose_reason: done\n---\n\nbody\n",
        ).unwrap();
        let (tx, _rx) = mpsc::channel::<ToolUpdate>(1);
        let (cmd_tx, _cmd_rx) = mpsc::channel(16);
        let ctx = ToolContext {
            cwd: dir.path().to_path_buf(),
            cancelled: Arc::new(std::sync::atomic::AtomicBool::new(false)),
            update_tx: tx,
            command_tx: cmd_tx,
            ui: Arc::new(NullInterface),
            file_cache: Arc::new(FileCache::new()),
            checkpoint_state: Arc::new(crate::tools::CheckpointState::new()),
            file_tracker: Arc::new(std::sync::Mutex::new(FileTracker::new())),
            anchor_store: Arc::new(crate::tools::AnchorStore::new()),
            lua_tool_loader: None,
            mode: crate::config::AgentMode::Full,
            read_max_lines: 500,
            turn_mana_review: Arc::new(std::sync::Mutex::new(
                crate::mana_review::TurnManaReviewAccumulator::default(),
            )),
            config: Arc::new(crate::config::Config::default()),
            run_policy: Default::default(),
            supporting_provenance: Vec::new(),
        };
        let tool = ManaTool::default();
        let reopened = tool
            .execute("call_reopen", json!({ "action": "reopen", "id": "1" }), ctx)
            .await
            .unwrap();
        assert_eq!(reopened.details["unit"]["status"], "open");

        let dir2 = tempfile::tempdir().unwrap();
        let mana_dir2 = dir2.path().join(".mana");
        std::fs::create_dir_all(&mana_dir2).unwrap();
        std::fs::write(mana_dir2.join("config.yaml"), "project: test\nnext_id: 2\n").unwrap();
        std::fs::write(
            mana_dir2.join("1-test-unit.md"),
            "---\nid: '1'\ntitle: Test unit\nstatus: open\npriority: 2\ncreated_at: '2026-03-28T00:00:00Z'\nupdated_at: '2026-03-28T00:00:00Z'\nverify: test -n \"ok\"\n---\n\nbody\n",
        ).unwrap();
        let (tx2, _rx2) = mpsc::channel::<ToolUpdate>(1);
        let (cmd_tx2, _cmd_rx2) = mpsc::channel(16);
        let ctx2 = ToolContext {
            cwd: dir2.path().to_path_buf(),
            cancelled: Arc::new(std::sync::atomic::AtomicBool::new(false)),
            update_tx: tx2,
            command_tx: cmd_tx2,
            ui: Arc::new(NullInterface),
            file_cache: Arc::new(FileCache::new()),
            checkpoint_state: Arc::new(crate::tools::CheckpointState::new()),
            file_tracker: Arc::new(std::sync::Mutex::new(FileTracker::new())),
            anchor_store: Arc::new(crate::tools::AnchorStore::new()),
            lua_tool_loader: None,
            mode: crate::config::AgentMode::Full,
            read_max_lines: 500,
            turn_mana_review: Arc::new(std::sync::Mutex::new(
                crate::mana_review::TurnManaReviewAccumulator::default(),
            )),
            config: Arc::new(crate::config::Config::default()),
            run_policy: Default::default(),
            supporting_provenance: Vec::new(),
        };
        let verify = tool
            .execute(
                "call_verify",
                json!({ "action": "verify", "id": "1" }),
                ctx2,
            )
            .await
            .unwrap();
        assert_eq!(verify.details["passed"], true);

        let dir3 = tempfile::tempdir().unwrap();
        let mana_dir3 = dir3.path().join(".mana");
        std::fs::create_dir_all(&mana_dir3).unwrap();
        std::fs::write(mana_dir3.join("config.yaml"), "project: test\nnext_id: 1\n").unwrap();
        let (tx3, _rx3) = mpsc::channel::<ToolUpdate>(1);
        let (cmd_tx3, _cmd_rx3) = mpsc::channel(16);
        let ctx3 = ToolContext {
            cwd: dir3.path().to_path_buf(),
            cancelled: Arc::new(std::sync::atomic::AtomicBool::new(false)),
            update_tx: tx3,
            command_tx: cmd_tx3,
            ui: Arc::new(NullInterface),
            file_cache: Arc::new(FileCache::new()),
            checkpoint_state: Arc::new(crate::tools::CheckpointState::new()),
            file_tracker: Arc::new(std::sync::Mutex::new(FileTracker::new())),
            anchor_store: Arc::new(crate::tools::AnchorStore::new()),
            lua_tool_loader: None,
            mode: crate::config::AgentMode::Full,
            read_max_lines: 500,
            turn_mana_review: Arc::new(std::sync::Mutex::new(
                crate::mana_review::TurnManaReviewAccumulator::default(),
            )),
            config: Arc::new(crate::config::Config::default()),
            run_policy: Default::default(),
            supporting_provenance: Vec::new(),
        };
        let fact = tool.execute("call_fact", json!({ "action": "fact_create", "title": "Auth fact", "verify": "test -d .mana", "description": "fact body", "ttl_days": 7 }), ctx3).await.unwrap();
        assert_eq!(fact.details["unit"]["unit_type"], "fact");
    }

    #[tokio::test]
    async fn notes_append_is_safe_partial_update() {
        let dir = tempfile::tempdir().unwrap();
        let (ctx, _keep) = ctx_with_mode(dir.path(), crate::config::AgentMode::Full);
        let tool = ManaTool::default();
        let result = tool
            .execute(
                "call_notes_append",
                json!({
                    "action": "notes_append",
                    "id": "1",
                    "notes": "diagnosis from turn 2"
                }),
                ctx,
            )
            .await
            .unwrap();
        let unit = &result.details["unit"];
        assert_eq!(unit["title"], "Test unit");
        assert!(unit["notes"]
            .as_str()
            .unwrap_or("")
            .contains("diagnosis from turn 2"));
    }

    #[tokio::test]
    async fn decision_add_and_resolve_work() {
        let dir = tempfile::tempdir().unwrap();
        let (ctx, _keep) = ctx_with_mode(dir.path(), crate::config::AgentMode::Full);
        let tool = ManaTool::default();
        let added = tool
            .execute(
                "call_decision_add",
                json!({
                    "action": "decision_add",
                    "id": "1",
                    "description": "Choose retry limit"
                }),
                ctx,
            )
            .await
            .unwrap();
        assert_eq!(added.details["unit"]["decisions"][0], "Choose retry limit");

        let dir2 = tempfile::tempdir().unwrap();
        let (ctx2, _keep2) = ctx_with_mode(dir2.path(), crate::config::AgentMode::Full);
        std::fs::write(
            dir2.path().join(".mana").join("1-test-unit.md"),
            "---\nid: '1'\ntitle: Test unit\nstatus: open\npriority: 2\ncreated_at: '2026-03-28T00:00:00Z'\nupdated_at: '2026-03-28T00:00:00Z'\nverify: test -n \"ok\"\ndecisions:\n  - Choose retry limit\n---\n\nbody\n",
        ).unwrap();
        let resolved = tool
            .execute(
                "call_decision_resolve",
                json!({
                    "action": "decision_resolve",
                    "id": "1",
                    "resolve_decisions": ["Choose retry limit"]
                }),
                ctx2,
            )
            .await
            .unwrap();
        let decisions = resolved.details["unit"]["decisions"]
            .as_array()
            .cloned()
            .unwrap_or_default();
        assert!(decisions.is_empty());
    }

    #[tokio::test]
    async fn show_returns_archived_unit_when_active_missing() {
        let dir = tempfile::tempdir().unwrap();
        let mana_dir = dir.path().join(".mana");
        std::fs::create_dir_all(mana_dir.join("archive/2026/04")).unwrap();
        std::fs::write(mana_dir.join("config.yaml"), "project: test\nnext_id: 2\n").unwrap();
        std::fs::write(
            mana_dir.join("archive/2026/04/1-archived-unit.md"),
            "---\nid: '1'\ntitle: Archived unit\nstatus: closed\npriority: 2\ncreated_at: '2026-03-28T00:00:00Z'\nupdated_at: '2026-03-28T00:00:00Z'\nclosed_at: '2026-03-28T00:00:00Z'\nclose_reason: done\nis_archived: true\n---\n\nbody\n",
        )
        .unwrap();
        let (tx, _rx) = mpsc::channel::<ToolUpdate>(1);
        let (cmd_tx, _cmd_rx) = mpsc::channel(16);
        let ctx = ToolContext {
            cwd: dir.path().to_path_buf(),
            cancelled: Arc::new(std::sync::atomic::AtomicBool::new(false)),
            update_tx: tx,
            command_tx: cmd_tx,
            ui: Arc::new(NullInterface),
            file_cache: Arc::new(FileCache::new()),
            checkpoint_state: Arc::new(crate::tools::CheckpointState::new()),
            file_tracker: Arc::new(std::sync::Mutex::new(FileTracker::new())),
            anchor_store: Arc::new(crate::tools::AnchorStore::new()),
            lua_tool_loader: None,
            mode: crate::config::AgentMode::Full,
            read_max_lines: 500,
            turn_mana_review: Arc::new(std::sync::Mutex::new(
                crate::mana_review::TurnManaReviewAccumulator::default(),
            )),
            config: Arc::new(crate::config::Config::default()),
            run_policy: Default::default(),
            supporting_provenance: Vec::new(),
        };
        let tool = ManaTool::default();
        let result = tool
            .execute(
                "call_show_archived",
                json!({ "action": "show", "id": "1" }),
                ctx,
            )
            .await
            .unwrap();

        assert!(!result.is_error);
        assert_eq!(result.details["title"], "Archived unit");
        assert_eq!(result.details["is_archived"], true);
    }

    #[tokio::test]
    async fn tree_reports_archived_root_as_active_only_limitation() {
        let dir = tempfile::tempdir().unwrap();
        let mana_dir = dir.path().join(".mana");
        std::fs::create_dir_all(mana_dir.join("archive/2026/04")).unwrap();
        std::fs::write(mana_dir.join("config.yaml"), "project: test\nnext_id: 2\n").unwrap();
        std::fs::write(
            mana_dir.join("archive/2026/04/1-archived-unit.md"),
            "---\nid: '1'\ntitle: Archived unit\nstatus: closed\npriority: 2\ncreated_at: '2026-03-28T00:00:00Z'\nupdated_at: '2026-03-28T00:00:00Z'\nclosed_at: '2026-03-28T00:00:00Z'\nclose_reason: done\nis_archived: true\n---\n\nbody\n",
        )
        .unwrap();
        let (tx, _rx) = mpsc::channel::<ToolUpdate>(1);
        let (cmd_tx, _cmd_rx) = mpsc::channel(16);
        let ctx = ToolContext {
            cwd: dir.path().to_path_buf(),
            cancelled: Arc::new(std::sync::atomic::AtomicBool::new(false)),
            update_tx: tx,
            command_tx: cmd_tx,
            ui: Arc::new(NullInterface),
            file_cache: Arc::new(FileCache::new()),
            checkpoint_state: Arc::new(crate::tools::CheckpointState::new()),
            file_tracker: Arc::new(std::sync::Mutex::new(FileTracker::new())),
            anchor_store: Arc::new(crate::tools::AnchorStore::new()),
            lua_tool_loader: None,
            mode: crate::config::AgentMode::Full,
            read_max_lines: 500,
            turn_mana_review: Arc::new(std::sync::Mutex::new(
                crate::mana_review::TurnManaReviewAccumulator::default(),
            )),
            config: Arc::new(crate::config::Config::default()),
            run_policy: Default::default(),
            supporting_provenance: Vec::new(),
        };
        let tool = ManaTool::default();
        let result = tool
            .execute(
                "call_tree_archived",
                json!({ "action": "tree", "id": "1" }),
                ctx,
            )
            .await
            .unwrap();

        assert!(result.is_error);
        let text = result.text_content().unwrap_or("");
        assert!(text.contains("Archived unit 1 can be shown but not rendered in tree view"));
    }

    #[tokio::test]
    async fn root_scope_targets_outermost_mana() {
        let tower = tempfile::tempdir().unwrap();
        let root_mana = tower.path().join(".mana");
        std::fs::create_dir_all(&root_mana).unwrap();
        std::fs::write(root_mana.join("config.yaml"), "project: root\nnext_id: 2\n").unwrap();
        std::fs::write(
            root_mana.join("1-root-unit.md"),
            "---\nid: '1'\ntitle: Root unit\nstatus: open\npriority: 2\ncreated_at: '2026-03-28T00:00:00Z'\nupdated_at: '2026-03-28T00:00:00Z'\nverify: test -n \"ok\"\n---\n\nbody\n",
        ).unwrap();
        let project = tower.path().join("imp");
        let project_mana = project.join(".mana");
        std::fs::create_dir_all(&project_mana).unwrap();
        std::fs::write(
            project_mana.join("config.yaml"),
            "project: nested\nnext_id: 2\n",
        )
        .unwrap();
        std::fs::write(
            project_mana.join("1-project-unit.md"),
            "---\nid: '1'\ntitle: Project unit\nstatus: open\npriority: 2\ncreated_at: '2026-03-28T00:00:00Z'\nupdated_at: '2026-03-28T00:00:00Z'\nverify: test -n \"ok\"\n---\n\nbody\n",
        ).unwrap();
        let workdir = project.join("src");
        std::fs::create_dir_all(&workdir).unwrap();
        let (tx, _rx) = mpsc::channel::<ToolUpdate>(1);
        let (cmd_tx, _cmd_rx) = mpsc::channel(16);
        let ctx = ToolContext {
            cwd: workdir,
            cancelled: Arc::new(std::sync::atomic::AtomicBool::new(false)),
            update_tx: tx,
            command_tx: cmd_tx,
            ui: Arc::new(NullInterface),
            file_cache: Arc::new(FileCache::new()),
            checkpoint_state: Arc::new(crate::tools::CheckpointState::new()),
            file_tracker: Arc::new(std::sync::Mutex::new(FileTracker::new())),
            anchor_store: Arc::new(crate::tools::AnchorStore::new()),
            lua_tool_loader: None,
            mode: crate::config::AgentMode::Full,
            read_max_lines: 500,
            turn_mana_review: Arc::new(std::sync::Mutex::new(
                crate::mana_review::TurnManaReviewAccumulator::default(),
            )),
            config: Arc::new(crate::config::Config::default()),
            run_policy: Default::default(),
            supporting_provenance: Vec::new(),
        };
        let tool = ManaTool::default();
        let result = tool
            .execute(
                "call_root_scope",
                json!({ "action": "show", "id": "1", "scope": "root" }),
                ctx,
            )
            .await
            .unwrap();
        assert_eq!(result.details["title"], "Root unit");
    }

    #[tokio::test]
    async fn explicit_path_targets_project_outside_cwd_ancestry() {
        let outside = tempfile::tempdir().unwrap();
        let target_project = outside.path().join("other-project");
        let target_mana = target_project.join(".mana");
        std::fs::create_dir_all(&target_mana).unwrap();
        std::fs::write(
            target_mana.join("config.yaml"),
            "project: other\nnext_id: 2\n",
        )
        .unwrap();
        std::fs::write(
            target_mana.join("1-other-unit.md"),
            "---\nid: '1'\ntitle: Other unit\nstatus: open\npriority: 2\ncreated_at: '2026-03-28T00:00:00Z'\nupdated_at: '2026-03-28T00:00:00Z'\nverify: test -n \"ok\"\n---\n\nbody\n",
        )
        .unwrap();

        let unrelated = tempfile::tempdir().unwrap();
        let workdir = unrelated.path().join("scratch");
        std::fs::create_dir_all(&workdir).unwrap();
        let (tx, _rx) = mpsc::channel::<ToolUpdate>(1);
        let (cmd_tx, _cmd_rx) = mpsc::channel(16);
        let ctx = ToolContext {
            cwd: workdir,
            cancelled: Arc::new(std::sync::atomic::AtomicBool::new(false)),
            update_tx: tx,
            command_tx: cmd_tx,
            ui: Arc::new(NullInterface),
            file_cache: Arc::new(FileCache::new()),
            checkpoint_state: Arc::new(crate::tools::CheckpointState::new()),
            file_tracker: Arc::new(std::sync::Mutex::new(FileTracker::new())),
            anchor_store: Arc::new(crate::tools::AnchorStore::new()),
            lua_tool_loader: None,
            mode: crate::config::AgentMode::Full,
            read_max_lines: 500,
            turn_mana_review: Arc::new(std::sync::Mutex::new(
                crate::mana_review::TurnManaReviewAccumulator::default(),
            )),
            config: Arc::new(crate::config::Config::default()),
            run_policy: Default::default(),
            supporting_provenance: Vec::new(),
        };
        let tool = ManaTool::default();
        let result = tool
            .execute(
                "call_explicit_path",
                json!({ "action": "show", "id": "1", "path": target_project }),
                ctx,
            )
            .await
            .unwrap();
        assert_eq!(result.details["title"], "Other unit");
    }

    #[tokio::test]
    async fn worker_blocks_fact_create() {
        match run_with_mode("worker", "fact_create").await {
            ManaResult::ModeBlocked(_) => {}
            ManaResult::Attempted(out) => {
                panic!(
                    "worker should block 'fact_create', got: {:?}",
                    out.text_content()
                )
            }
        }
    }

    #[tokio::test]
    async fn worker_allows_verify() {
        match run_with_mode("worker", "verify").await {
            ManaResult::Attempted(_) => {}
            ManaResult::ModeBlocked(msg) => {
                panic!("worker should allow 'verify' but was blocked: {msg}")
            }
        }
    }

    #[tokio::test]
    async fn auditor_allows_show() {
        match run_with_mode("auditor", "show").await {
            ManaResult::Attempted(_) => {}
            ManaResult::ModeBlocked(msg) => {
                panic!("auditor should allow 'show' but was blocked: {msg}")
            }
        }
    }

    #[tokio::test]
    async fn auditor_blocks_update() {
        match run_with_mode("auditor", "update").await {
            ManaResult::ModeBlocked(_) => {}
            ManaResult::Attempted(out) => {
                panic!(
                    "auditor should block 'update', got: {:?}",
                    out.text_content()
                )
            }
        }
    }

    #[tokio::test]
    async fn worker_allows_logs() {
        match run_with_mode("worker", "logs").await {
            ManaResult::Attempted(_) => {}
            ManaResult::ModeBlocked(msg) => {
                panic!("worker should allow 'logs' but was blocked: {msg}")
            }
        }
    }

    #[tokio::test]
    async fn orchestrator_allows_extended_actions() {
        for action in &[
            "status",
            "list",
            "show",
            "create",
            "close",
            "update",
            "run",
            "run_state",
            "evaluate",
            "claim",
            "release",
            "logs",
            "agents",
            "next",
        ] {
            match run_with_mode("orchestrator", action).await {
                ManaResult::Attempted(_) => {}
                ManaResult::ModeBlocked(msg) => {
                    panic!("orchestrator should allow '{action}' but was blocked: {msg}")
                }
            }
        }
    }

    #[tokio::test]
    async fn ctx_mode_wins_over_env() {
        let prev = {
            let _guard = ENV_LOCK.lock().unwrap();
            let prev = std::env::var("IMP_MODE").ok();
            std::env::set_var("IMP_MODE", "full");
            prev
        };

        let result = run_with_ctx_mode(crate::config::AgentMode::Worker, "create").await;

        match prev {
            Some(v) => {
                let _guard = ENV_LOCK.lock().unwrap();
                std::env::set_var("IMP_MODE", v)
            }
            None => {
                let _guard = ENV_LOCK.lock().unwrap();
                std::env::remove_var("IMP_MODE")
            }
        }

        match result {
            ManaResult::ModeBlocked(_) => {}
            ManaResult::Attempted(out) => {
                panic!(
                    "ctx.mode=Worker should block 'create' even when IMP_MODE=full, got: {:?}",
                    out.text_content()
                )
            }
        }
    }

    #[tokio::test]
    async fn ctx_worker_blocks_create() {
        match run_with_ctx_mode(crate::config::AgentMode::Worker, "create").await {
            ManaResult::ModeBlocked(_) => {}
            ManaResult::Attempted(out) => {
                panic!(
                    "ctx Worker mode should block 'create', got: {:?}",
                    out.text_content()
                )
            }
        }
    }

    #[tokio::test]
    async fn ctx_full_allows_extended_actions() {
        for action in &[
            "status",
            "list",
            "show",
            "create",
            "close",
            "update",
            "run",
            "run_state",
            "evaluate",
            "claim",
            "release",
            "logs",
            "agents",
            "next",
            "tree",
        ] {
            match run_with_ctx_mode(crate::config::AgentMode::Full, action).await {
                ManaResult::Attempted(_) => {}
                ManaResult::ModeBlocked(msg) => {
                    panic!("ctx Full mode should allow '{action}' but was blocked: {msg}")
                }
            }
        }
    }

    #[tokio::test]
    async fn next_returns_ranked_text() {
        let dir = tempfile::tempdir().unwrap();
        let (ctx, _keep) = ctx_with_mode(dir.path(), crate::config::AgentMode::Full);
        let tool = ManaTool::default();
        let result = tool
            .execute("call_next", json!({ "action": "next", "count": 1 }), ctx)
            .await
            .unwrap();
        let text = result.text_content().unwrap_or("");
        assert!(text.contains("Test unit") || text.contains("No ready units"));
    }

    #[tokio::test]
    async fn run_returns_promptly() {
        let dir = tempfile::tempdir().unwrap();
        let (ctx, _keep) = ctx_with_mode(dir.path(), crate::config::AgentMode::Full);
        let tool = ManaTool::default();
        let result = tool
            .execute("call_run", json!({ "action": "run", "dry_run": true }), ctx)
            .await
            .unwrap();
        let text = result.text_content().unwrap_or("");
        assert!(text.contains("Started native mana orchestration"));
        assert!(result.details["run_id"].as_str().is_some());
    }

    #[tokio::test]
    async fn run_enqueues_follow_up_on_completion_without_ui() {
        let dir = tempfile::tempdir().unwrap();
        let mana_dir = dir.path().join(".mana");
        std::fs::create_dir_all(&mana_dir).unwrap();
        std::fs::write(mana_dir.join("config.yaml"), "project: test\nnext_id: 2\n").unwrap();
        std::fs::write(
            mana_dir.join("1-test-unit.md"),
            "---\nid: '1'\ntitle: Test unit\nstatus: open\npriority: 2\ncreated_at: '2026-03-28T00:00:00Z'\nupdated_at: '2026-03-28T00:00:00Z'\nverify: test -n \"ok\"\n---\n\nbody\n",
        )
        .unwrap();

        let (tx, _rx) = mpsc::channel::<ToolUpdate>(8);
        let (cmd_tx, mut cmd_rx) = mpsc::channel(8);
        let ctx = ToolContext {
            cwd: dir.path().to_path_buf(),
            cancelled: Arc::new(std::sync::atomic::AtomicBool::new(false)),
            update_tx: tx,
            command_tx: cmd_tx,
            ui: Arc::new(NullInterface),
            file_cache: Arc::new(FileCache::new()),
            checkpoint_state: Arc::new(crate::tools::CheckpointState::new()),
            file_tracker: Arc::new(std::sync::Mutex::new(FileTracker::new())),
            anchor_store: Arc::new(crate::tools::AnchorStore::new()),
            lua_tool_loader: None,
            mode: crate::config::AgentMode::Full,
            read_max_lines: 500,
            turn_mana_review: Arc::new(std::sync::Mutex::new(
                crate::mana_review::TurnManaReviewAccumulator::default(),
            )),
            config: Arc::new(crate::config::Config::default()),
            run_policy: Default::default(),
            supporting_provenance: Vec::new(),
        };

        let tool = ManaTool::default();
        let _ = tool
            .execute(
                "call_bg_follow_up",
                json!({ "action": "run", "dry_run": true }),
                ctx,
            )
            .await
            .unwrap();

        let follow_up = tokio::time::timeout(std::time::Duration::from_secs(2), cmd_rx.recv())
            .await
            .expect("follow-up timeout")
            .expect("follow-up message");

        match follow_up {
            crate::agent::AgentCommand::FollowUp(text) => {
                assert!(
                    text.contains("Native mana orchestration finished"),
                    "text was: {text}"
                );
                assert!(
                    text.contains("Inspect with mana(action=\"run_state\")"),
                    "text was: {text}"
                );
            }
            other => panic!("expected follow-up, got {other:?}"),
        }
    }

    #[tokio::test]
    async fn run_with_ui_does_not_enqueue_follow_up_on_completion() {
        let dir = tempfile::tempdir().unwrap();
        let (ctx, _keep, _widgets) = ctx_with_ui(dir.path(), crate::config::AgentMode::Full);
        let tool = ManaTool::default();
        let (cmd_tx, mut cmd_rx) = mpsc::channel(8);
        let ctx = ToolContext {
            command_tx: cmd_tx,
            ..ctx
        };

        let _ = tool
            .execute(
                "call_bg_follow_up_ui",
                json!({ "action": "run", "dry_run": true }),
                ctx,
            )
            .await
            .unwrap();

        let follow_up =
            tokio::time::timeout(std::time::Duration::from_millis(700), cmd_rx.recv()).await;
        match follow_up {
            Err(_) | Ok(None) => {}
            Ok(Some(msg)) => panic!(
                "UI mode should rely on widget/status instead of queueing duplicate follow-up chat text, got: {msg:?}"
            ),
        }
    }

    #[tokio::test]
    async fn run_supports_explicit_targets() {
        let dir = tempfile::tempdir().unwrap();
        let (ctx, _keep) = ctx_with_mode(dir.path(), crate::config::AgentMode::Full);
        let tool = ManaTool::default();
        let result = tool
            .execute(
                "call_bg_targets",
                json!({ "action": "run", "dry_run": true, "targets": ["1", "2"] }),
                ctx,
            )
            .await
            .unwrap();
        assert_eq!(result.details["target"]["kind"], "explicit");
        assert_eq!(result.details["target"]["ids"][0], "1");
        assert_eq!(result.details["target"]["ids"][1], "2");
    }

    #[tokio::test]
    async fn run_state_and_evaluate_report_native_run() {
        let dir = tempfile::tempdir().unwrap();
        let (ctx, _keep) = ctx_with_mode(dir.path(), crate::config::AgentMode::Full);
        let tool = ManaTool::default();

        let run_result = tool
            .execute("call_run", json!({ "action": "run", "dry_run": true }), ctx)
            .await
            .unwrap();
        let run_id = run_result.details["run_id"]
            .as_str()
            .expect("run_id")
            .to_string();

        let dir2 = tempfile::tempdir().unwrap();
        let (ctx2, _keep2) = ctx_with_mode(dir2.path(), crate::config::AgentMode::Full);
        let state = tool
            .execute(
                "call_state",
                json!({ "action": "run_state", "run_id": run_id.as_str() }),
                ctx2,
            )
            .await
            .unwrap();
        let state_text = state.text_content().unwrap_or("");
        assert!(
            state_text.contains("Native mana orchestration "),
            "state_text was: {state_text}"
        );
        assert!(
            state_text.contains("Worker runtime:")
                || state_text.contains("Next: Inspect logs/agents"),
            "state_text was: {state_text}"
        );
        assert!(
            state_text.contains("Units:")
                || state_text.contains("Latest: Dry run:")
                || state_text.contains("0 total"),
            "state_text was: {state_text}"
        );
        assert!(
            state_text.contains("all ready units") || state_text.contains("unit"),
            "state_text was: {state_text}"
        );

        let dir3 = tempfile::tempdir().unwrap();
        let (ctx3, _keep3) = ctx_with_mode(dir3.path(), crate::config::AgentMode::Full);
        let evaluation = tool
            .execute(
                "call_eval",
                json!({ "action": "evaluate", "run_id": run_result.details["run_id"] }),
                ctx3,
            )
            .await
            .unwrap();
        let eval_text = evaluation.text_content().unwrap_or("");
        assert!(
            eval_text.contains("Native mana orchestration run ")
                && (eval_text.contains("finished") || eval_text.contains("still running")),
            "eval_text was: {eval_text}"
        );
        assert!(
            eval_text.contains("Worker runtime:") || eval_text.contains("Runtime:"),
            "eval_text was: {eval_text}"
        );
    }

    #[test]
    fn run_store_prefers_active_run_snapshot() {
        let mut store = ManaRunStore::default();
        let active_id = store.start_run(
            "all ready units".to_string(),
            &mana::commands::run::NativeRunParams {
                target: mana::commands::run::RunTarget::AllReady,
                jobs: 2,
                dry_run: false,
                loop_mode: false,
                keep_going: false,
                timeout: 30,
                idle_timeout: 5,
                json_stream: true,
                review: false,
                run_model: None,
                run_thinking: None,
            },
        );
        let finished_id = store.start_run(
            "unit 1".to_string(),
            &mana::commands::run::NativeRunParams {
                target: mana::commands::run::RunTarget::Unit("1".to_string()),
                jobs: 1,
                dry_run: true,
                loop_mode: false,
                keep_going: false,
                timeout: 30,
                idle_timeout: 5,
                json_stream: true,
                review: false,
                run_model: None,
                run_thinking: None,
            },
        );
        store.fail_run(&finished_id, "done".to_string());

        let latest = store.snapshot(None).expect("snapshot");
        assert_eq!(latest.run_id, active_id);
        assert_eq!(latest.status, "starting");
    }

    #[test]
    fn stream_event_line_formats_tool_activity() {
        let line = stream_event_line(&mana::stream::StreamEvent::UnitTool {
            id: "1".to_string(),
            tool_name: "read".to_string(),
            tool_count: 3,
            file_path: Some("src/lib.rs".to_string()),
        })
        .expect("line");
        assert!(line.contains("#3 read"));
        assert!(line.contains("src/lib.rs"));
    }

    #[test]
    fn evaluate_output_reports_failures() {
        let mut state = NativeRunState::new(
            "run-7".to_string(),
            "unit 7".to_string(),
            &mana::commands::run::NativeRunParams {
                target: mana::commands::run::RunTarget::Unit("7".to_string()),
                jobs: 1,
                dry_run: false,
                loop_mode: false,
                keep_going: false,
                timeout: 30,
                idle_timeout: 5,
                json_stream: true,
                review: false,
                run_model: None,
                run_thinking: None,
            },
        );
        state.status = "finished".to_string();
        state.summary.total_failed = 2;
        state.log_lines.push("✗ 7 failed verify".to_string());

        let output = evaluate_run_output(&state);
        let text = output.text_content().unwrap_or("");
        assert!(text.contains("2 failed unit"));
        assert!(text.contains("Latest: ✗ 7 failed verify"));
        assert!(text.contains("Next: Inspect failed units"));
        assert_eq!(
            output.details["recovery"]["retry_requires_unit_update"],
            json!(true)
        );
        assert!(output.details["recovery"]["next_actions"]
            .as_array()
            .unwrap()
            .iter()
            .any(|action| action
                .as_str()
                .unwrap_or_default()
                .contains("do not rerun unchanged")));
    }

    #[test]
    fn run_state_output_includes_recovery_details() {
        let mut state = NativeRunState::new(
            "run-8".to_string(),
            "unit 8".to_string(),
            &mana::commands::run::NativeRunParams {
                target: mana::commands::run::RunTarget::Unit("8".to_string()),
                jobs: 1,
                dry_run: false,
                loop_mode: false,
                keep_going: false,
                timeout: 30,
                idle_timeout: 5,
                json_stream: true,
                review: false,
                run_model: None,
                run_thinking: None,
            },
        );
        state.status = "failed".to_string();
        state.summary.total_failed = 1;
        state.units.push(RunUnitStatus {
            id: "8".to_string(),
            title: "Failed unit".to_string(),
            status: "failed".to_string(),
            round: Some(1),
            agent: Some("imp-worker".to_string()),
            model: None,
            duration_secs: Some(3),
            tool_count: Some(2),
            turns: Some(1),
            failure_summary: Some("verify failed".to_string()),
            error: Some("exit 1".to_string()),
        });

        let output = run_state_output(&state);
        let text = output.text_content().unwrap_or_default();

        assert!(text.contains("Next: Inspect failed units"));
        assert_eq!(
            output.details["recovery"]["failed_units"][0]["id"],
            json!("8")
        );
        assert_eq!(
            output.details["recovery"]["retry_requires_unit_update"],
            json!(true)
        );
    }
    #[test]
    fn validate_native_run_target_rejects_multi_explicit_targets() {
        let target = RunTarget::Explicit(vec!["1".to_string(), "2".to_string()]);

        let error = validate_native_run_target(&target).expect_err("must not broaden scope");

        assert!(error.contains("multiple explicit targets"));
        assert!(error.contains("one target at a time"));
    }

    #[test]
    fn target_ids_from_run_target_extracts_explicit_units() {
        assert_eq!(
            target_ids_from_run_target(&RunTarget::Unit("273.3".to_string())),
            vec!["273.3".to_string()]
        );
        assert_eq!(
            target_ids_from_run_target(&RunTarget::Explicit(vec![
                "1".to_string(),
                "2".to_string()
            ])),
            vec!["1".to_string(), "2".to_string()]
        );
        assert!(target_ids_from_run_target(&RunTarget::AllReady).is_empty());
    }

    #[test]
    fn retry_guardrail_blocks_failed_unit_without_new_update() {
        let dir = tempfile::tempdir().unwrap();
        let mana_dir = dir.path().join(".mana");
        std::fs::create_dir(&mana_dir).unwrap();
        mana_core::config::Config {
            project: "retry-test".to_string(),
            next_id: 1,
            auto_close_parent: true,
            run: None,
            plan: None,
            max_loops: 10,
            max_concurrent: 4,
            poll_interval: 30,
            extends: vec![],
            rules_file: None,
            file_locking: false,
            worktree: false,
            on_close: None,
            on_fail: None,
            verify_timeout: None,
            review: None,
            user: None,
            user_email: None,
            auto_commit: false,
            commit_template: None,
            research: None,
            run_model: None,
            plan_model: None,
            review_model: None,
            research_model: None,
            batch_verify: false,
            memory_reserve_mb: 0,
            notify: None,
        }
        .save(&mana_dir)
        .unwrap();

        let created = mana_core::api::create_unit(
            &mana_dir,
            mana_core::ops::create::CreateParams {
                title: "Retry target".to_string(),
                verify: Some("false".to_string()),
                ..Default::default()
            },
        )
        .unwrap();
        let id = created.unit.id;
        let now = chrono::Utc::now();
        let mut failed_unit = mana_core::ops::show::get(&mana_dir, &id).unwrap().unit;
        failed_unit
            .attempt_log
            .push(mana_core::unit::AttemptRecord {
                num: 1,
                outcome: mana_core::unit::AttemptOutcome::Failed,
                notes: Some("verify failed".to_string()),
                agent: Some("imp-test".to_string()),
                started_at: Some(now),
                finished_at: Some(now),
                autonomy_observation: None,
            });
        failed_unit.updated_at = now - chrono::Duration::milliseconds(1);
        let unit_path = mana_core::discovery::find_unit_file(&mana_dir, &id).unwrap();
        failed_unit.to_file(&unit_path).unwrap();

        let guardrail = retry_guardrail_for_targets(&mana_dir, std::slice::from_ref(&id))
            .unwrap()
            .expect("failed unchanged unit should require update");

        assert_eq!(guardrail["retry_requires_unit_update"], json!(true));
        assert_eq!(guardrail["blocked_units"][0]["id"], json!(id));
        assert!(guardrail["next_actions"]
            .as_array()
            .unwrap()
            .iter()
            .any(|action| action.as_str().unwrap_or_default().contains("Append notes")));
    }

    #[test]
    fn retry_guardrail_allows_failed_unit_after_update() {
        let dir = tempfile::tempdir().unwrap();
        let mana_dir = dir.path().join(".mana");
        std::fs::create_dir(&mana_dir).unwrap();
        mana_core::config::Config {
            project: "retry-test".to_string(),
            next_id: 1,
            auto_close_parent: true,
            run: None,
            plan: None,
            max_loops: 10,
            max_concurrent: 4,
            poll_interval: 30,
            extends: vec![],
            rules_file: None,
            file_locking: false,
            worktree: false,
            on_close: None,
            on_fail: None,
            verify_timeout: None,
            review: None,
            user: None,
            user_email: None,
            auto_commit: false,
            commit_template: None,
            research: None,
            run_model: None,
            plan_model: None,
            review_model: None,
            research_model: None,
            batch_verify: false,
            memory_reserve_mb: 0,
            notify: None,
        }
        .save(&mana_dir)
        .unwrap();

        let created = mana_core::api::create_unit(
            &mana_dir,
            mana_core::ops::create::CreateParams {
                title: "Retry target".to_string(),
                verify: Some("false".to_string()),
                ..Default::default()
            },
        )
        .unwrap();
        let id = created.unit.id;
        let now = chrono::Utc::now();
        let mut failed_unit = mana_core::ops::show::get(&mana_dir, &id).unwrap().unit;
        failed_unit
            .attempt_log
            .push(mana_core::unit::AttemptRecord {
                num: 1,
                outcome: mana_core::unit::AttemptOutcome::Failed,
                notes: Some("verify failed".to_string()),
                agent: Some("imp-test".to_string()),
                started_at: Some(now),
                finished_at: Some(now),
                autonomy_observation: None,
            });
        failed_unit.updated_at = now;
        let unit_path = mana_core::discovery::find_unit_file(&mana_dir, &id).unwrap();
        failed_unit.to_file(&unit_path).unwrap();
        std::thread::sleep(std::time::Duration::from_millis(2));
        mana_core::api::update_unit(
            &mana_dir,
            &id,
            mana_core::ops::update::UpdateParams {
                notes: Some("Changed retry plan after failure".to_string()),
                ..Default::default()
            },
        )
        .unwrap();

        let guardrail = retry_guardrail_for_targets(&mana_dir, &[id]).unwrap();

        assert!(guardrail.is_none());
    }
    fn native_run_params_for_test() -> mana::commands::run::NativeRunParams {
        mana::commands::run::NativeRunParams {
            target: mana::commands::run::RunTarget::AllReady,
            jobs: 1,
            dry_run: false,
            loop_mode: false,
            keep_going: false,
            timeout: 30,
            idle_timeout: 5,
            json_stream: true,
            review: false,
            run_model: None,
            run_thinking: None,
        }
    }

    fn ready_unit_for_model_test(model: Option<&str>) -> mana_run_core::ReadyUnit {
        mana_run_core::ReadyUnit {
            id: "1".to_string(),
            title: "Model propagation".to_string(),
            priority: 2,
            critical_path_weight: 0,
            paths: Vec::new(),
            produces: Vec::new(),
            requires: Vec::new(),
            dependencies: Vec::new(),
            parent: None,
            model: model.map(str::to_string),
            verify_command: None,
            verify_fast: None,
            retry: mana_core::ops::run::RunRetryContext {
                attempt_number: 0,
                previous_failure: None,
                previous_notes: Vec::new(),
            },
        }
    }

    #[test]
    fn native_worker_options_prefer_unit_model_and_config_thinking() {
        let dir = tempfile::tempdir().unwrap();
        let (mut ctx, _keep) = ctx_with_mode(dir.path(), crate::config::AgentMode::Full);
        let config = crate::config::Config {
            model: Some("config-model".to_string()),
            thinking: Some(imp_llm::ThinkingLevel::High),
            ..Default::default()
        };
        ctx.config = Arc::new(config);
        let run_args = mana::commands::run::NativeRunParams {
            timeout: 42,
            ..native_run_params_for_test()
        };

        let options = worker_options_for_native_unit(
            &ready_unit_for_model_test(Some("unit-model")),
            &run_args,
            dir.path().to_path_buf(),
            dir.path().join(".mana"),
            &ctx,
        );

        assert_eq!(options.model.as_deref(), Some("unit-model"));
        assert_eq!(options.thinking, Some(imp_llm::ThinkingLevel::High));
        assert_eq!(options.max_turns, Some(42));
        assert_eq!(
            options.mana_dir_override.as_deref(),
            Some(dir.path().join(".mana").as_path())
        );
    }

    #[test]
    fn native_worker_options_fall_back_to_config_model() {
        let dir = tempfile::tempdir().unwrap();
        let (mut ctx, _keep) = ctx_with_mode(dir.path(), crate::config::AgentMode::Full);
        let config = crate::config::Config {
            model: Some("config-model".to_string()),
            ..Default::default()
        };
        ctx.config = Arc::new(config);

        let options = worker_options_for_native_unit(
            &ready_unit_for_model_test(None),
            &native_run_params_for_test(),
            dir.path().to_path_buf(),
            dir.path().join(".mana"),
            &ctx,
        );

        assert_eq!(options.model.as_deref(), Some("config-model"));
    }

    #[test]
    fn native_run_runtime_info_reports_config_model() {
        let dir = tempfile::tempdir().unwrap();
        let (mut ctx, _keep) = ctx_with_mode(dir.path(), crate::config::AgentMode::Full);
        let config = crate::config::Config {
            model: Some("config-model".to_string()),
            ..Default::default()
        };
        ctx.config = Arc::new(config);

        let runtime = runtime_info_for_run(&native_run_params_for_test(), &ctx);

        assert_eq!(runtime.direct_agent.as_deref(), Some("imp"));
        assert_eq!(runtime.model.as_deref(), Some("config-model"));
    }

    #[test]
    fn mana_run_state_persists_material_events() {
        let mut store = ManaRunStore::default();
        let run_id = store.start_run("all ready units".to_string(), &native_run_params_for_test());
        let before = store.snapshot(Some(&run_id)).unwrap().last_event_at_ms;

        store.update_with_event(
            &run_id,
            &mana::stream::StreamEvent::UnitTool {
                id: "1".to_string(),
                tool_name: "read".to_string(),
                tool_count: 1,
                file_path: Some("src/lib.rs".to_string()),
            },
        );

        let state = store.snapshot(Some(&run_id)).unwrap();
        assert_eq!(state.event_count, 1);
        assert!(state.last_event_at_ms >= before);
        assert!(state.log_lines.iter().any(|line| line.contains("#1 read")));
    }

    #[test]
    fn mana_run_state_marks_stale_running_runs_interrupted() {
        let mut store = ManaRunStore::default();
        let run_id = store.start_run("all ready units".to_string(), &native_run_params_for_test());
        {
            let run = store
                .runs
                .iter_mut()
                .find(|run| run.run_id == run_id)
                .unwrap();
            run.status = "running".to_string();
            run.last_event_at_ms = unix_time_ms().saturating_sub(INTERRUPTED_RUN_STALE_MS + 1_000);
        }

        store.classify_stale_unfinished_runs();

        let state = store.snapshot(Some(&run_id)).unwrap();
        assert_eq!(state.status, "interrupted");
        assert!(state.error.as_deref().unwrap_or_default().contains("stale"));
        let output = run_state_output(&state);
        let text = output.text_content().unwrap_or_default();
        assert!(text.contains("Interrupted:"));
        assert_eq!(
            output.details["recovery"]["stale_workers"][0]["run_id"],
            run_id
        );
        assert!(output.details["recovery"]["next_actions"]
            .as_array()
            .unwrap()
            .iter()
            .any(|action| action
                .as_str()
                .unwrap_or_default()
                .contains("interrupted/stale")));
    }
}