## Summary
Fixes a race where a stuck-kill during Plan Review could leave an
approved task stranded in `todo` as **unplanned**, so the scheduler
refused release to `in-progress` for several minutes (observed on
FN-1312: ~6m39s idle after Plan Review APPROVE).
### What went wrong
1. Finalize clears `status` early, then runs Plan Review.
2. Stuck-kill disposes the main triage session near the 30m processing
threshold.
3. Stale eviction only treated the main session as live, so the card
left `processing` while Plan Review / finalize was still running.
4. A second planner claimed `status: "planning"` and rewrote
`PROMPT.md`.
5. The first finalize moved `triage → todo` without clearing planning
statuses.
6. Hold-release saw planning/`needs-replan` and blocked: *“card is
unplanned and cannot enter processing column in-progress”*.
### Fix
In `packages/engine/src/triage.ts`:
- Track **finalizing** handoffs and **live Plan Review subagents** as
live planning work.
- Keep them in `getProcessingTaskIds`, refuse concurrent `specifyTask`,
and skip stale-processing eviction while they are live.
- **Defer** stuck-abort requeue during finalize (bump kill count only;
do not force `needs-replan`).
- Recover approved drafts with `status: null` (post early-clear), not
only `status: "planning"`.
- Re-assert `status: null` after the successful release move to todo.
### Tests
Regression coverage in `triage.test.ts` for eviction retention,
processing-id inclusion, null-status recovery, needs-replan
non-recovery, and deferred stuck-abort during finalize.
## Test plan
- [x] `pnpm --filter @fusion/engine exec vitest run
src/__tests__/triage.test.ts -t "evictStaleProcessing|specified triage
recovery|stuck|recoverApproved|markStuckAborted|defers stuck-abort"`
(related cases green)
- [ ] CI gate on this PR
- [ ] Optional: reproduce stuck-kill mid–Plan Review and confirm todo
releases without a second full replan
## Notes
Secondary report (stuck-kill immediately after all implementation steps
complete, then 16s auto-recovery) is **out of scope** here; existing
recovery already continued by skipping completed steps.
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Bug Fixes**
* Improved recovery for approved tasks when Plan Review has completed,
including correct handling of `null`-status drafts.
* Avoided recovering unplanned seed drafts and tasks that should enter a
replanning flow.
* Refined stuck-abort requeue/cleanup to respect in-progress Plan Review
and finalize handoffs.
* Prevented stale-processing eviction from removing tasks while Plan
Review/subagent finalization is still active.
* Blocked new triage discovery and task specification when finalize/Plan
Review work is ongoing, preventing handoff disruption.
* Preserved durable task state during handoff completion
(approval/failure/replan outcomes).
* **Tests**
* Added expanded triage recovery and stuck-abort/stale-eviction
regression coverage.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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