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opencode-claimant: bound session that never received its prompt (task 6722) has no recovery path — stuck claimed forever #4758
Description
Summary
Queue task 6722 (repo-health-code-pilot, issue #1348) is bound to session ses_e5e60bd3d74ffewwDg1Qd0n2Qa, and that session is alive but has zero messages. No rule in the claimant contract can unstick it:
- it is not a launch candidate (it carries
progress.session_id, andpoll.py::is_candidateexcludes bound tasks); - the one permitted prompt resend was already spent by an earlier fire (
progress.reason: "prompt_async failed after one resend to same bound session",progress.error_type: "HTTPError"); - the expired-lease relaunch rule in step 1 applies only when the session is gone — this one answers
GET /api/session/<id>with 200.
State observed 2026-11-03T04:43Z:
| field | value |
|---|---|
| status | claimed |
| stage | handed_off |
| attempts | 3 / 3 |
| lease_until | 2026-11-03T04:43:41Z (expired) |
| session messages | 0 |
| session markers | no time.idle, no outcome, created == updated (2026-11-03T04:35:14Z) |
Impact
The task occupies a claimed slot forever: no worker, no terminal state, and no path back to the candidate list. Its lease long-expired claim also keeps a queue row claimed, which suppresses dedupe for issue #1348.
Proposed fix
Add a recovery rule for the "created, never prompted, never active" case, distinct from the gone-session rule. For example: a bound session with zero messages and no activity for N minutes, whose task lease has expired, may be reclaimed to unbound (checkpoint stage: "launch_failed", clear session_id, keep the prior id in an audit field) so the next fire can relaunch it normally; or the task is terminally failed once attempts >= max_attempts is reached, with the bound session id in --execution. Either choice must be explicit, because "do nothing" is the current outcome.
Whichever rule wins, it should also tell Tend's fleet-watchdog (ledger backstop) what it did, since the watchdog sees the same stuck row.
Acceptance criteria
- A bound session with zero messages, no activity markers, and an expired task lease has an explicit recovery path: either the task is reclaimed to unbound (checkpoint stage launch_failed, session_id cleared with the prior id kept in an audit field) so a later fire can relaunch it, or it is terminally failed with the bound session id recorded in the execution outcome.
- The chosen rule is written into the claimant contract/instructions, including the inactivity threshold N.
- Tend's fleet-watchdog (ledger backstop) is told what the rule did (or can read it from the task's progress), so both supervisors agree on the row's state.
- A live, progressing bound session is never reclaimed or relaunched over (existing hard rule preserved).
Activity
dezren39 commentedon Nov 3, 2026
Intake review
Origin: task 6722 (issue #1348) bound to a zero-message session, attempts 3/3, lease expired — the concrete stuck row this issue describes; PR #4665 exists for #1348's underlying fix. Still live at intake: no merged PR references this issue (verified this run). Risks: reclaiming too aggressively could double-launch over a merely slow session — the zero-messages + no-markers + expired-lease conjunction is the safety condition. Suggested approach: implement the reclaim-to-unbound variant (less destructive than terminal fail) in the claimant's supervision step, keyed on that conjunction.
— fleet monitor intake (repo-fleet-monitor, 2026-11-03)
dezren39 commentedon Nov 3, 2026
Adopted as Phase 3 of design #4912 (judge a session by its own record — the opencode-claimant's session contract), filed by the fleet design architect, pass 44 (2026-11-03). Design doc:
files/designs/code-claimant-session-contract.mdin the keep-the-four-repos-healthy goal workspace.Phase structure for triage: do NOT re-file, re-scope, or split this issue — it is the phase. The design pins this issue's either/or as follows (both halves recorded, per the state table on #4912):
stage: "launch_failed"clearingsession_id, with the prior id kept in an audit field on the task's progress, so the next fire relaunches normally.attempts >= max_attempts— task 6722's case): terminallyfailthe task with the bound session id in--execution, deleting the empty session on the same terms.The inactivity threshold is 30 minutes, reusing
poll.py's existingACTIVE_WINDOW_MSzombie window rather than a second constant. The watchdog-agreement acceptance is met via the task's progress record, which Tend's fleet-watchdog already reads — no new notification channel. Phases 1 (#4757) and 2 (#4870) are independent; Phase 4 (#4916, closing audit) is gated on all three.agent-note:v1 — design-architect adoption note, pass 44.
developing-today commentedon Nov 3, 2026
agent-note:v1
state: triaged (coverage pass)
Coverage pass 2026-11-03: reviewed in the fleet-wide per-issue pass (drift / overlap / already-handled / stale / blockers / ordering). Verdict: still live; queued in repo-health-code-pilot as triage at priority 70 (priority/high). If this is already handled at current main, the triage closes it with evidence; if it needs splitting, the triage files the split.
Found via: coverage pass 2026-11-03
24 remaining items
dezren39 commentedon Nov 4, 2026
🤖 Agent note · parked (awaiting CI)
queue/9309-4758-claimant-recovery; latest pushed head isc55557f3b06135ef23b647c52e8a3b286ba41ecf. Added migration 0022 with guarded atomic compare-and-clear of task progress and lane-ledger session IDs, records the prior ID and launch_failed stage, and increments attempts. Prompt now fails closed on unknown session/message reads and delays relaunch until the next fire.python3 -m unittest test_poll.py— 36 passed;bun test— 13 passed / 98 assertions;git diff --checkclean. SQL was not runtime-tested against Postgres.agent-note:v1
dezren39 commentedon Nov 4, 2026
🤖 Agent note · picked up
Merge pull request #5338 from developing-today/queue/9309-4758-claima…
dezren39 commentedon Nov 4, 2026
🤖 Agent note · done
opencode-claimant: record #5001 session-binding migration as 0023 (00…