supercode-harness 0.4.3

//! Lossless, non-executing reconstruction of Claude Code runtime state.
//!
//! Claude Code persists scheduling, queue, permission, and background-agent
//! events in the same JSONL stream as chat messages.  Those records are not
//! part of the provider-neutral [`crate::ChatMessage`] view, but they are
//! required to decide whether a resumed session is semantically complete.
//! This module folds the verbatim [`crate::Session::raw`] records into a
//! serializable manifest.  It deliberately does **not** start jobs, agents, or
//! timers; activation is a separate policy decision.

use std::collections::{BTreeMap, HashMap, VecDeque};

use serde::{Deserialize, Serialize};
use serde_json::Value;

use crate::{Error, Result, Session, SessionSource};

/// Version of the persisted Claude runtime-state manifest schema.
pub const CLAUDE_RUNTIME_MANIFEST_VERSION: u32 = 1;

/// A pure, serializable reconstruction of runtime state in a Claude transcript.
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct ClaudeRuntimeManifest {
    /// Manifest schema version.
    pub schema_version: u32,
    /// Imported schedulers are always restored inert.  Merely loading this
    /// manifest must never start a timer or child agent.
    #[serde(default)]
    pub execution_state: ClaudeRuntimeExecutionState,
    /// Deterministic scheduler cursor state. Absent in manifests written
    /// before active emulation existed and therefore defaults empty.
    #[serde(default)]
    pub scheduler: crate::claude_runtime_scheduler::ClaudeRuntimeSchedulerState,
    /// Latest permission, prompt-leaf, and harness posture.
    pub posture: ClaudeRuntimePosture,
    /// Jobs created successfully and not subsequently cancelled.
    pub active_crons: Vec<ClaudeCronJob>,
    /// Successful wakeups for which no matching scheduled prompt has fired.
    pub pending_wakeups: Vec<ClaudeWakeup>,
    /// Queue totals and any content still enqueued at end of transcript.
    pub queue: ClaudeQueueState,
    /// Background Claude Agent calls and their latest known terminal/live state.
    pub background_children: Vec<ClaudeBackgroundChild>,
    /// Latest harness-reported background-child count, when present.
    pub reported_pending_background_children: Option<u64>,
    /// Verbatim runtime-affecting records, including records not interpreted.
    pub residue: Vec<ClaudeRuntimeResidue>,
}

/// Execution posture for imported Claude runtime state.
///
#[derive(Debug, Clone, Copy, Default, PartialEq, Eq, Serialize, Deserialize)]
#[serde(rename_all = "snake_case")]
pub enum ClaudeRuntimeExecutionState {
    /// State is inspectable and mutable, but no timer or prompt is executed.
    #[default]
    Paused,
    /// Explicitly activated for deterministic scheduler claims.
    Active,
}

/// Latest Claude CLI mode and permission posture.
#[derive(Debug, Clone, Default, PartialEq, Eq, Serialize, Deserialize)]
pub struct ClaudeRuntimePosture {
    /// Latest `permission-mode.permissionMode` value.
    pub permission_mode: Option<String>,
    /// Latest `last-prompt.leafUuid`, identifying Claude's selected prompt leaf.
    pub last_prompt_leaf_uuid: Option<String>,
    /// Latest abbreviated `last-prompt.lastPrompt` value.
    pub last_prompt: Option<String>,
    /// Latest runtime record timestamp.
    pub timestamp: Option<String>,
    /// Latest Claude CLI entrypoint (normally `cli`).
    pub entrypoint: Option<String>,
    /// Latest Claude user posture (normally `external`).
    pub user_type: Option<String>,
    /// Latest Claude Code version recorded by the runtime.
    pub version: Option<String>,
    /// Latest working directory recorded by the runtime.
    pub cwd: Option<String>,
}

/// One active Claude Cron job.
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct ClaudeCronJob {
    /// Harness-assigned job ID recovered from the successful tool result.
    pub id: String,
    /// Tool-use ID of the `CronCreate` call.
    pub tool_use_id: String,
    /// Cron expression supplied by the model.
    pub schedule: String,
    /// Whether the job repeats.
    pub recurring: bool,
    /// Whether durable scheduling was requested by the caller.
    pub durable_requested: bool,
    /// Prompt to inject when the job fires.
    pub prompt: String,
    /// Timestamp of the create call, when present.
    pub created_at: Option<String>,
    /// Relative expiry advertised by Claude's result, when recoverable.
    pub expires_after_seconds: Option<u64>,
    /// Exact successful tool-result text that assigned the ID.
    pub creation_result: String,
}

/// One scheduled one-shot wakeup that has not yet observably fired.
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct ClaudeWakeup {
    /// Tool-use ID of the `ScheduleWakeup` call.
    pub tool_use_id: String,
    /// Requested delay in seconds.
    pub delay_seconds: u64,
    /// Human-readable reason supplied to the tool.
    pub reason: Option<String>,
    /// Prompt to inject, or the reason when Claude omitted a distinct prompt.
    pub prompt: Option<String>,
    /// Timestamp of the schedule call, when present.
    pub created_at: Option<String>,
    /// Harness-reported next wall-clock wake time, when recoverable.
    pub scheduled_for: Option<String>,
    /// Exact successful tool-result text.
    pub creation_result: String,
}

/// End-of-transcript queue state.
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct ClaudeQueueState {
    /// Total enqueue records folded.
    pub enqueued: u64,
    /// Total dequeue records folded.
    pub dequeued: u64,
    /// Total explicit `remove` records folded.
    pub removed: u64,
    /// FIFO content left enqueued at end of transcript.
    pub pending: Vec<String>,
}

/// Latest known state of a Claude `Agent` tool call.
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct ClaudeBackgroundChild {
    /// Parent tool-use ID.
    pub tool_use_id: String,
    /// Whether the originating tool call was present in this JSONL stream.
    pub origin_observed: bool,
    /// Claude task/agent ID, when the async launch returned one.
    pub agent_id: Option<String>,
    /// Agent definition requested by the parent.
    pub agent_type: Option<String>,
    /// Human-readable task description.
    pub description: Option<String>,
    /// Model requested by the parent.
    pub requested_model: Option<String>,
    /// Model Claude resolved for the child.
    pub resolved_model: Option<String>,
    /// Child prompt.
    pub prompt: Option<String>,
    /// Async transcript/output file, when Claude returned one.
    pub output_file: Option<String>,
    /// Latest known child state.
    pub state: ClaudeBackgroundState,
    /// Timestamp of the Agent call.
    pub started_at: Option<String>,
    /// Timestamp of a terminal result/notification.
    pub finished_at: Option<String>,
    /// Terminal summary, when present.
    pub summary: Option<String>,
}

/// Lifecycle state recovered for a Claude background child.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
#[serde(rename_all = "snake_case")]
pub enum ClaudeBackgroundState {
    /// The tool call was emitted but no launch result was observed.
    LaunchPending,
    /// Claude reported an async child was launched and no terminal event followed.
    Running,
    /// A successful synchronous result or `completed` notification was observed.
    Completed,
    /// Claude reported a terminal failure/error.
    Failed,
    /// Claude reported that the task or background command was killed.
    Killed,
    /// A terminal state unknown to this manifest schema was observed.
    UnknownTerminal,
}

/// Verbatim evidence for one runtime-affecting source record.
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct ClaudeRuntimeResidue {
    /// One-based line number in the source JSONL.
    pub line: usize,
    /// Stable classification, or `unknown-runtime-record` for unmodeled data.
    pub kind: String,
    /// Original JSONL line, byte-for-byte excluding its line terminator.
    pub raw: String,
}

#[derive(Debug, Clone)]
enum PendingRuntimeCall {
    Invalid {
        name: String,
    },
    CronCreate {
        tool_use_id: String,
        schedule: String,
        recurring: bool,
        durable_requested: bool,
        prompt: String,
        created_at: Option<String>,
    },
    CronDelete {
        id: String,
    },
    Wakeup {
        tool_use_id: String,
        delay_seconds: u64,
        reason: Option<String>,
        prompt: Option<String>,
        created_at: Option<String>,
    },
    CronList,
}

impl ClaudeRuntimeManifest {
    /// Reconstruct a manifest from a loaded Claude Code session without
    /// executing or contacting a provider.
    pub fn from_session(session: &Session) -> Result<Self> {
        if session.meta.source != SessionSource::ClaudeCode {
            return Err(Error::Other(
                "Claude runtime state can only be extracted from a Claude Code session".into(),
            ));
        }
        if session.parse_error_lines != 0 {
            return Err(Error::Other(format!(
                "cannot reconstruct Claude runtime state: {} malformed JSONL line(s)",
                session.parse_error_lines
            )));
        }

        let mut posture = ClaudeRuntimePosture::default();
        let mut active_crons = BTreeMap::<String, ClaudeCronJob>::new();
        let mut pending_calls = HashMap::<String, PendingRuntimeCall>::new();
        let mut wakeups = BTreeMap::<String, ClaudeWakeup>::new();
        let mut queue = VecDeque::<String>::new();
        let mut enqueued = 0_u64;
        let mut dequeued = 0_u64;
        let mut removed = 0_u64;
        let mut children = BTreeMap::<String, ClaudeBackgroundChild>::new();
        let mut task_notifications = Vec::<(TaskNotification, Option<String>, usize)>::new();
        let mut reported_pending_background_children = None;
        let mut residue = Vec::new();

        // Claude's JSONL is append-only, but asynchronous runtime results can
        // be persisted before the assistant tool-use record that owns them.
        // Index every runtime call first so the state fold below can still
        // correlate those forward references. Result records remain folded
        // in source order because that is the observable state-transition
        // order (for example, create/delete/create of the same cron job).
        for (offset, raw) in session.raw.iter().enumerate() {
            if raw.trim().is_empty() {
                continue;
            }
            let line = offset + 1;
            let value: Value = serde_json::from_str(raw).map_err(|error| {
                Error::Other(format!(
                    "cannot reconstruct Claude runtime state: malformed JSON at line {line}: {error}"
                ))
            })?;
            if value.get("type").and_then(Value::as_str) == Some("assistant") {
                fold_assistant_calls(
                    &value,
                    line,
                    &mut pending_calls,
                    &mut children,
                    &mut residue,
                    raw,
                )?;
            }
        }

        for (offset, raw) in session.raw.iter().enumerate() {
            if raw.trim().is_empty() {
                continue;
            }
            let line = offset + 1;
            let value: Value = serde_json::from_str(raw).map_err(|error| {
                Error::Other(format!(
                    "cannot reconstruct Claude runtime state: malformed JSON at line {line}: {error}"
                ))
            })?;
            update_posture(&mut posture, &value);
            let record_type = value.get("type").and_then(Value::as_str).unwrap_or("");

            match record_type {
                "permission-mode" => {
                    let mode = required_str(&value, "permissionMode", line, "permission-mode")?;
                    posture.permission_mode = Some(mode.to_owned());
                    push_residue(&mut residue, line, "permission-mode", raw);
                }
                "last-prompt" => {
                    posture.last_prompt_leaf_uuid = value
                        .get("leafUuid")
                        .and_then(Value::as_str)
                        .map(str::to_owned);
                    posture.last_prompt = value
                        .get("lastPrompt")
                        .and_then(Value::as_str)
                        .map(str::to_owned);
                    push_residue(&mut residue, line, "last-prompt", raw);
                }
                "queue-operation" => {
                    let operation = required_str(&value, "operation", line, "queue-operation")?;
                    match operation {
                        "enqueue" => {
                            let content = required_str(&value, "content", line, "queue enqueue")?;
                            enqueued += 1;
                            queue.push_back(content.to_owned());
                            mark_matching_wakeup_fired(content, &mut wakeups);
                            if let Some(notification) = parse_task_notification(content) {
                                task_notifications.push((
                                    notification,
                                    value
                                        .get("timestamp")
                                        .and_then(Value::as_str)
                                        .map(str::to_owned),
                                    line,
                                ));
                            }
                        }
                        "dequeue" => {
                            dequeued += 1;
                            queue.pop_front().ok_or_else(|| {
                                Error::Other(format!(
                                    "malformed Claude queue reference at line {line}: dequeue with an empty queue"
                                ))
                            })?;
                        }
                        "remove" => {
                            removed += 1;
                            queue.pop_front().ok_or_else(|| {
                                Error::Other(format!(
                                    "malformed Claude queue reference at line {line}: remove with an empty queue"
                                ))
                            })?;
                        }
                        other => {
                            push_residue(
                                &mut residue,
                                line,
                                &format!("unknown-queue-operation:{other}"),
                                raw,
                            );
                            continue;
                        }
                    }
                    push_residue(&mut residue, line, "queue-operation", raw);
                }
                // Runtime calls were indexed in the pre-pass above so a
                // physically earlier async result can resolve its tool-use
                // id. The main fold intentionally leaves assistant records
                // alone rather than registering every call twice.
                "assistant" => {}
                "user" => {
                    fold_tool_results(
                        &value,
                        line,
                        &mut pending_calls,
                        &mut active_crons,
                        &mut wakeups,
                        &mut children,
                        &mut task_notifications,
                        &mut residue,
                        raw,
                    )?;
                }
                "system" => {
                    if let Some(count) = value
                        .get("pendingBackgroundAgentCount")
                        .and_then(Value::as_u64)
                    {
                        reported_pending_background_children = Some(count);
                        push_residue(&mut residue, line, "background-count", raw);
                    } else if value.get("subtype").and_then(Value::as_str)
                        == Some("scheduled_task_fire")
                    {
                        push_residue(&mut residue, line, "scheduled-task-fire", raw);
                    }
                }
                other if looks_runtime_type(other) => {
                    push_residue(&mut residue, line, "unknown-runtime-record", raw);
                }
                _ => {}
            }
        }

        for (notification, timestamp, line) in task_notifications {
            apply_task_notification(notification, timestamp, line, &mut children)?;
        }

        // The call-index pre-pass observes assistant residue before the main
        // fold sees other runtime records. Restore source order for the
        // manifest's verbatim evidence stream.
        residue.sort_by_key(|record| record.line);

        let pending_wakeups = wakeups.into_values().collect();
        Ok(Self {
            schema_version: CLAUDE_RUNTIME_MANIFEST_VERSION,
            execution_state: ClaudeRuntimeExecutionState::Paused,
            scheduler: Default::default(),
            posture,
            active_crons: active_crons.into_values().collect(),
            pending_wakeups,
            queue: ClaudeQueueState {
                enqueued,
                dequeued,
                removed,
                pending: queue.into_iter().collect(),
            },
            background_children: children.into_values().collect(),
            reported_pending_background_children,
            residue,
        })
    }

    /// Render this manifest as deterministic, pretty JSON for a no-provider
    /// dry report or persistence alongside a resumed session.
    pub fn to_pretty_json(&self) -> Result<String> {
        serde_json::to_string_pretty(self).map_err(Error::Decode)
    }
}

fn update_posture(posture: &mut ClaudeRuntimePosture, value: &Value) {
    for (key, target) in [
        ("timestamp", &mut posture.timestamp),
        ("entrypoint", &mut posture.entrypoint),
        ("userType", &mut posture.user_type),
        ("version", &mut posture.version),
        ("cwd", &mut posture.cwd),
    ] {
        if let Some(text) = value.get(key).and_then(Value::as_str) {
            *target = Some(text.to_owned());
        }
    }
}

fn fold_assistant_calls(
    value: &Value,
    line: usize,
    pending_calls: &mut HashMap<String, PendingRuntimeCall>,
    children: &mut BTreeMap<String, ClaudeBackgroundChild>,
    residue: &mut Vec<ClaudeRuntimeResidue>,
    raw: &str,
) -> Result<()> {
    let timestamp = value
        .get("timestamp")
        .and_then(Value::as_str)
        .map(str::to_owned);
    let Some(content) = value.pointer("/message/content").and_then(Value::as_array) else {
        return Ok(());
    };
    for block in content {
        if block.get("type").and_then(Value::as_str) != Some("tool_use") {
            continue;
        }
        let Some(name) = block.get("name").and_then(Value::as_str) else {
            continue;
        };
        let Some(id) = block.get("id").and_then(Value::as_str) else {
            if matches!(
                name,
                "CronCreate" | "CronDelete" | "ScheduleWakeup" | "Agent"
            ) {
                return Err(Error::Other(format!(
                    "malformed Claude runtime tool call at line {line}: {name} has no id"
                )));
            }
            continue;
        };
        let input = block.get("input").unwrap_or(&Value::Null);
        let call = match name {
            "CronCreate" => Some(PendingRuntimeCall::CronCreate {
                tool_use_id: id.to_owned(),
                schedule: required_str(input, "cron", line, "CronCreate")?.to_owned(),
                recurring: input
                    .get("recurring")
                    .and_then(Value::as_bool)
                    .unwrap_or(false),
                durable_requested: input
                    .get("durable")
                    .and_then(Value::as_bool)
                    .unwrap_or(false),
                prompt: required_str(input, "prompt", line, "CronCreate")?.to_owned(),
                created_at: timestamp.clone(),
            }),
            "CronDelete" => Some(match input.get("id").and_then(Value::as_str) {
                Some(id) => PendingRuntimeCall::CronDelete { id: id.to_owned() },
                // Stock Claude persists model-generated calls that fail input
                // validation. Keep the call pending so its error result can
                // be correlated and preserved as runtime residue; only a
                // successful result for invalid input is malformed state.
                None => PendingRuntimeCall::Invalid {
                    name: "CronDelete".to_owned(),
                },
            }),
            "ScheduleWakeup" => Some(PendingRuntimeCall::Wakeup {
                tool_use_id: id.to_owned(),
                delay_seconds: input
                    .get("delaySeconds")
                    .and_then(Value::as_u64)
                    .ok_or_else(|| {
                        Error::Other(format!(
                            "malformed ScheduleWakeup at line {line}: missing integer delaySeconds"
                        ))
                    })?,
                reason: input
                    .get("reason")
                    .and_then(Value::as_str)
                    .map(str::to_owned),
                prompt: input
                    .get("prompt")
                    .and_then(Value::as_str)
                    .map(str::to_owned),
                created_at: timestamp.clone(),
            }),
            "CronList" => Some(PendingRuntimeCall::CronList),
            "Agent" => {
                let child = ClaudeBackgroundChild {
                    tool_use_id: id.to_owned(),
                    origin_observed: true,
                    agent_id: None,
                    agent_type: input
                        .get("subagent_type")
                        .and_then(Value::as_str)
                        .map(str::to_owned),
                    description: input
                        .get("description")
                        .and_then(Value::as_str)
                        .map(str::to_owned),
                    requested_model: input
                        .get("model")
                        .and_then(Value::as_str)
                        .map(str::to_owned),
                    resolved_model: None,
                    prompt: input
                        .get("prompt")
                        .and_then(Value::as_str)
                        .map(str::to_owned),
                    output_file: None,
                    state: ClaudeBackgroundState::LaunchPending,
                    started_at: timestamp.clone(),
                    finished_at: None,
                    summary: None,
                };
                if children.insert(id.to_owned(), child).is_some() {
                    return Err(Error::Other(format!(
                        "malformed Claude Agent reference at line {line}: duplicate tool-use id {id}"
                    )));
                }
                push_residue(residue, line, "agent-call", raw);
                None
            }
            other if other.starts_with("Cron") || other.contains("Wakeup") => {
                push_residue(residue, line, "unknown-runtime-tool-call", raw);
                None
            }
            _ => None,
        };
        if let Some(call) = call {
            if pending_calls.insert(id.to_owned(), call).is_some() {
                return Err(Error::Other(format!(
                    "malformed Claude runtime reference at line {line}: duplicate tool-use id {id}"
                )));
            }
            push_residue(residue, line, "runtime-tool-call", raw);
        }
    }
    Ok(())
}

#[allow(clippy::too_many_arguments)]
fn fold_tool_results(
    value: &Value,
    line: usize,
    pending_calls: &mut HashMap<String, PendingRuntimeCall>,
    active_crons: &mut BTreeMap<String, ClaudeCronJob>,
    wakeups: &mut BTreeMap<String, ClaudeWakeup>,
    children: &mut BTreeMap<String, ClaudeBackgroundChild>,
    task_notifications: &mut Vec<(TaskNotification, Option<String>, usize)>,
    residue: &mut Vec<ClaudeRuntimeResidue>,
    raw: &str,
) -> Result<()> {
    let timestamp = value
        .get("timestamp")
        .and_then(Value::as_str)
        .map(str::to_owned);
    let tool_use_result = value.get("toolUseResult");
    let Some(content) = value.pointer("/message/content").and_then(Value::as_array) else {
        return Ok(());
    };
    for block in content {
        if block.get("type").and_then(Value::as_str) != Some("tool_result") {
            continue;
        }
        let Some(tool_use_id) = block.get("tool_use_id").and_then(Value::as_str) else {
            continue;
        };
        let text = tool_result_text(block.get("content"));
        let is_error = block
            .get("is_error")
            .and_then(Value::as_bool)
            .unwrap_or(false);

        if let Some(child) = children.get_mut(tool_use_id) {
            if is_error {
                child.state = ClaudeBackgroundState::Failed;
                child.finished_at = timestamp.clone();
                child.summary = text.clone();
            } else if tool_use_result
                .and_then(|v| v.get("isAsync"))
                .and_then(Value::as_bool)
                == Some(true)
            {
                child.state = ClaudeBackgroundState::Running;
                child.agent_id = tool_use_result
                    .and_then(|v| v.get("agentId"))
                    .and_then(Value::as_str)
                    .map(str::to_owned);
                child.resolved_model = tool_use_result
                    .and_then(|v| v.get("resolvedModel"))
                    .and_then(Value::as_str)
                    .map(str::to_owned);
                child.output_file = tool_use_result
                    .and_then(|v| v.get("outputFile"))
                    .and_then(Value::as_str)
                    .map(str::to_owned);
            } else {
                child.state = ClaudeBackgroundState::Completed;
                child.finished_at = timestamp.clone();
                child.summary = text.clone();
            }
            push_residue(residue, line, "agent-result", raw);
            continue;
        }

        if let Some(notification) = text.as_deref().and_then(parse_task_notification) {
            task_notifications.push((notification, timestamp.clone(), line));
            push_residue(residue, line, "agent-notification", raw);
            continue;
        }

        let Some(call) = pending_calls.remove(tool_use_id) else {
            if text.as_deref().is_some_and(looks_runtime_result) {
                return Err(Error::Other(format!(
                    "malformed Claude runtime result at line {line}: unknown tool-use id {tool_use_id}"
                )));
            }
            continue;
        };
        push_residue(residue, line, "runtime-tool-result", raw);
        if is_error {
            continue;
        }
        let text = text.ok_or_else(|| {
            Error::Other(format!(
                "malformed Claude runtime result at line {line}: non-text result for {tool_use_id}"
            ))
        })?;
        match call {
            PendingRuntimeCall::Invalid { name } => {
                return Err(Error::Other(format!(
                    "malformed {name} result at line {line}: invalid input unexpectedly succeeded"
                )));
            }
            PendingRuntimeCall::CronCreate {
                tool_use_id,
                schedule,
                mut recurring,
                durable_requested,
                prompt,
                created_at,
            } => {
                let id = parse_created_cron_id(&text)
                    .ok_or_else(|| {
                        Error::Other(format!(
                            "malformed CronCreate result at line {line}: no assigned job id"
                        ))
                    })?
                    .to_owned();
                // The successful harness result is authoritative about the
                // job actually created. Claude may omit the optional
                // `recurring` request field while still returning the
                // unambiguous recurring result shape; treating the omitted
                // field as false incorrectly deletes that job after its first
                // delivery. Preserve legacy `Scheduled job` behavior because
                // that older result shape does not state either mode.
                if text.starts_with("Scheduled recurring job ") {
                    recurring = true;
                } else if text.starts_with("Scheduled one-shot task ") {
                    recurring = false;
                }
                let job = ClaudeCronJob {
                    id: id.clone(),
                    tool_use_id,
                    schedule,
                    recurring,
                    durable_requested,
                    prompt,
                    created_at,
                    expires_after_seconds: text
                        .contains("Auto-expires after 7 days")
                        .then_some(7 * 24 * 60 * 60),
                    creation_result: text,
                };
                if active_crons.insert(id.clone(), job).is_some() {
                    return Err(Error::Other(format!(
                        "malformed CronCreate result at line {line}: duplicate active job id {id}"
                    )));
                }
            }
            PendingRuntimeCall::CronDelete { id } => {
                if !text.starts_with("Cancelled job ") {
                    return Err(Error::Other(format!(
                        "malformed CronDelete result at line {line}: unexpected success text"
                    )));
                }
                active_crons.remove(&id).ok_or_else(|| {
                    Error::Other(format!(
                        "malformed CronDelete reference at line {line}: unknown active job id {id}"
                    ))
                })?;
            }
            PendingRuntimeCall::Wakeup {
                tool_use_id,
                delay_seconds,
                reason,
                prompt,
                created_at,
            } => {
                let scheduled_for =
                    parse_between(&text, "Next wakeup scheduled for ", " (in ").map(str::to_owned);
                if scheduled_for.is_none() {
                    return Err(Error::Other(format!(
                        "malformed ScheduleWakeup result at line {line}: no scheduled time"
                    )));
                }
                // Claude exposes a single "next wakeup" slot. A later
                // successful ScheduleWakeup supersedes an earlier one.
                wakeups.clear();
                wakeups.insert(
                    tool_use_id.clone(),
                    ClaudeWakeup {
                        tool_use_id,
                        delay_seconds,
                        reason,
                        prompt,
                        created_at,
                        scheduled_for,
                        creation_result: text,
                    },
                );
            }
            PendingRuntimeCall::CronList => {
                // Stock Claude records the structured listing in the
                // record-level `toolUseResult`.  Supercode's synthesized
                // Claude tail stores an intrinsic result as plain tool text,
                // so also accept the same `{jobs:[...]}` object serialized
                // there.  This makes a paused CronList call re-importable
                // instead of turning a valid continued transcript into a
                // manifest parse failure.
                let text_result = serde_json::from_str::<Value>(&text).ok();
                let jobs = tool_use_result
                    .or(text_result.as_ref())
                    .and_then(|result| result.get("jobs"))
                    .and_then(Value::as_array)
                    .ok_or_else(|| {
                        Error::Other(format!(
                            "malformed CronList result at line {line}: missing jobs array"
                        ))
                    })?;
                let mut listed = BTreeMap::new();
                for job in jobs {
                    let id = required_str(job, "id", line, "CronList job")?.to_owned();
                    let cron = required_str(job, "cron", line, "CronList job")?.to_owned();
                    let previous = active_crons.get(&id);
                    listed.insert(
                        id.clone(),
                        ClaudeCronJob {
                            id,
                            tool_use_id: previous
                                .map(|job| job.tool_use_id.clone())
                                .unwrap_or_else(|| tool_use_id.to_owned()),
                            schedule: cron,
                            recurring: job
                                .get("recurring")
                                .and_then(Value::as_bool)
                                .unwrap_or(false),
                            durable_requested: previous
                                .map(|job| job.durable_requested)
                                .unwrap_or_else(|| {
                                    job.get("durable").and_then(Value::as_bool).unwrap_or(false)
                                }),
                            prompt: required_str(job, "prompt", line, "CronList job")?.to_owned(),
                            created_at: previous.and_then(|job| job.created_at.clone()),
                            expires_after_seconds: previous
                                .and_then(|job| job.expires_after_seconds),
                            creation_result: previous
                                .map(|job| job.creation_result.clone())
                                .unwrap_or_else(|| text.clone()),
                        },
                    );
                }
                *active_crons = listed;
            }
        }
    }
    Ok(())
}

fn mark_matching_wakeup_fired(content: &str, wakeups: &mut BTreeMap<String, ClaudeWakeup>) {
    let matching = wakeups.iter().find_map(|(id, wakeup)| {
        let prompt = wakeup.prompt.as_deref().or(wakeup.reason.as_deref());
        (prompt == Some(content)).then(|| id.clone())
    });
    if let Some(id) = matching {
        wakeups.remove(&id);
    }
}

fn tool_result_text(content: Option<&Value>) -> Option<String> {
    match content? {
        Value::String(text) => Some(text.clone()),
        Value::Array(blocks) => {
            let joined = blocks
                .iter()
                .filter(|block| block.get("type").and_then(Value::as_str) == Some("text"))
                .filter_map(|block| block.get("text").and_then(Value::as_str))
                .collect::<Vec<_>>()
                .join("\n");
            (!joined.is_empty()).then_some(joined)
        }
        _ => None,
    }
}

#[derive(Debug)]
struct TaskNotification {
    task_id: Option<String>,
    tool_use_id: Option<String>,
    status: Option<String>,
    summary: Option<String>,
}

fn parse_task_notification(text: &str) -> Option<TaskNotification> {
    text.contains("<task-notification>")
        .then(|| TaskNotification {
            task_id: tag_value(text, "task-id"),
            tool_use_id: tag_value(text, "tool-use-id"),
            status: tag_value(text, "status"),
            summary: tag_value(text, "summary"),
        })
}

fn apply_task_notification(
    notification: TaskNotification,
    timestamp: Option<String>,
    line: usize,
    children: &mut BTreeMap<String, ClaudeBackgroundChild>,
) -> Result<()> {
    let referenced = notification
        .tool_use_id
        .clone()
        .or_else(|| {
            notification.task_id.as_deref().and_then(|task_id| {
                children
                    .iter()
                    .find(|(_, child)| child.agent_id.as_deref() == Some(task_id))
                    .map(|(id, _)| id.clone())
            })
        })
        .or_else(|| notification.task_id.as_ref().map(|id| format!("task:{id}")))
        .ok_or_else(|| {
            Error::Other(format!(
                "malformed Claude task notification at line {line}: missing tool-use-id and task-id"
            ))
        })?;
    if !children.contains_key(&referenced) {
        let child_type = notification
            .summary
            .as_deref()
            .filter(|summary| summary.starts_with("Background command "))
            .map(|_| "background-command")
            .unwrap_or("unresolved-task");
        children.insert(
            referenced.clone(),
            ClaudeBackgroundChild {
                tool_use_id: referenced.clone(),
                origin_observed: false,
                agent_id: notification.task_id.clone(),
                agent_type: Some(child_type.to_owned()),
                description: notification.summary.clone(),
                requested_model: None,
                resolved_model: None,
                prompt: None,
                output_file: None,
                state: ClaudeBackgroundState::LaunchPending,
                started_at: None,
                finished_at: None,
                summary: None,
            },
        );
    }
    let child = children
        .get_mut(&referenced)
        .expect("child inserted or observed above");
    child.agent_id = child.agent_id.clone().or(notification.task_id);
    child.state = match notification.status.as_deref() {
        Some("completed") => ClaudeBackgroundState::Completed,
        Some("failed") | Some("error") => ClaudeBackgroundState::Failed,
        Some("killed") => ClaudeBackgroundState::Killed,
        Some(_) => ClaudeBackgroundState::UnknownTerminal,
        None => ClaudeBackgroundState::UnknownTerminal,
    };
    child.finished_at = timestamp;
    child.summary = notification.summary;
    Ok(())
}

fn tag_value(text: &str, tag: &str) -> Option<String> {
    let start = format!("<{tag}>");
    let end = format!("</{tag}>");
    parse_between(text, &start, &end).map(str::to_owned)
}

fn parse_created_cron_id(text: &str) -> Option<&str> {
    let rest = text
        .strip_prefix("Scheduled recurring job ")
        .or_else(|| text.strip_prefix("Scheduled job "))
        .or_else(|| text.strip_prefix("Scheduled one-shot task "))?;
    rest.split_whitespace().next()
}

fn parse_between<'a>(text: &'a str, start: &str, end: &str) -> Option<&'a str> {
    let rest = text.split_once(start)?.1;
    Some(rest.split_once(end)?.0)
}

fn required_str<'a>(value: &'a Value, key: &str, line: usize, kind: &str) -> Result<&'a str> {
    value.get(key).and_then(Value::as_str).ok_or_else(|| {
        Error::Other(format!(
            "malformed Claude {kind} at line {line}: missing string {key}"
        ))
    })
}

fn looks_runtime_result(text: &str) -> bool {
    text.starts_with("Scheduled recurring job ")
        || text.starts_with("Scheduled job ")
        || text.starts_with("Scheduled one-shot task ")
        || text.starts_with("Cancelled job ")
        || text.starts_with("Next wakeup scheduled for ")
}

fn looks_runtime_type(record_type: &str) -> bool {
    record_type.contains("queue")
        || record_type.contains("permission")
        || record_type.contains("schedule")
        || record_type.contains("cron")
        || record_type.contains("background")
}

fn push_residue(residue: &mut Vec<ClaudeRuntimeResidue>, line: usize, kind: &str, raw: &str) {
    residue.push(ClaudeRuntimeResidue {
        line,
        kind: kind.to_owned(),
        raw: raw.to_owned(),
    });
}