- Add metrics.py with pool utilization, task backlog, stuck rate, avg processing time, eval completion rate
- Add alerts.py with alert rules (pool utilization > 90%, task backlog > 50, stuck rate > 10%)
- Implement alert history and webhook notifications
- Add metrics and alerts APIs
- Add database migration for alert history table
- Add 11 unit tests for metrics, 10 unit tests for alerts, 8 integration tests
- Update migration tests to include new alert history table
All 853 tests passing.
Resident agents call GET /api/exploration/patrol once per cycle to see
every running production-line campaign that opted into exploration
(seed set present), the new results since the last watermark (reusing
campaign report aggregation), and the remaining exploration budget.
The watermark advances after each call so subsequent calls only report
increments; accelerated and terminal campaigns are excluded.
