# Decision Gate

Verdict: **GO**

---

```
VERDICT: GO
```

### Rationale
All 4 personas unanimously approve after 3 rounds of review. The implementation delivers all 7 PRD functional requirements (watchdog thread, auto-recovery, Slack alert, `started_at` on QueueItem, enhanced `/healthz`, monitor event, configurable threshold) in 162 lines of production code across 4 files, backed by 664 lines of tests. The core architectural insight — a daemon thread that reads only GIL-safe primitives and filesystem stats, fully independent of the `_agent_lock` held by stuck pipelines — is correct and deadlock-free. The dual-gate detection (elapsed wall-clock AND heartbeat staleness) structurally prevents false positives. **All 2956 tests pass with zero regressions.**

### Unresolved Issues
None blocking. Two documented v2 follow-ups:
- Hard wall-clock ceiling independent of heartbeat freshness (closes spoofing gap)
- Explicit socket timeout on Slack alert in `_watchdog_recover`

### Recommendation
Merge as-is. The decision artifact has been written to `cOS_reviews/decisions/20260401_170000_decision_you_are_a_code_assistant_working_on_behalf_of_the_engineering_team_the_following.md`.