alexei.dolgolyov
aefecdffdf
Add periodic scanner for stale containers: - Cron-based scanner (hourly) detects non-running containers exceeding threshold - last_alive_at tracking on instances, updated on deploy/start/restart - API: GET /api/containers/stale, POST cleanup (single + bulk) - Event log warnings emitted for newly stale containers - Graceful handling of externally removed containers