## Summary
Supersedes #3416 — the fork head is not writable from maintainers, so
this branch carries the same fix merged onto current `main`.
## Changes
- Bind the self-owned worktree liveness probe in task-executor pure
facades (from #3416).
- Merge current main so the lifecycle-column census baseline stays
green.
## Test plan
- [x] `pnpm check:lifecycle-columns` clean after merge
- [ ] CI green
Closes context from #3416.
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
* **Bug Fixes**
* Fixed cleanup for self-owned worktrees so it no longer crashes before
checking whether an active session is present.
* Improved safety during worktree reconciliation by correctly verifying
that the worktree is still active before removal.
* **Documentation**
* Added a changeset documenting the worktree cleanup fix.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Co-authored-by: BESA-Franz <49682134+BESA-Franz@users.noreply.github.com>
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