.planning/phases/06-background-worker/06-03-SUMMARY.md

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+---
+plan: 06-03
+phase: 06-background-worker
+status: complete
+type: checkpoint
+completed: 2026-05-15
+requirements:
+  - WORK-01
+  - WORK-02
+  - WORK-03
+  - WORK-04
+---
+
+## Summary
+
+Human verification checkpoint passed. Developer ran `just worker` against live Postgres + MinIO, observed both required heartbeat log lines, confirmed graceful SIGINT shutdown, and verified full test suite green.
+
+## Key Files
+
+### Verified Behaviors
+- `"worker ready"` appeared within 5 seconds of `just worker`
+- `"worker heartbeat"` appeared within 10 seconds (RunOnStart:true fires immediately)
+- Second `"worker heartbeat"` appeared ~60 seconds later (confirms PeriodicJob scheduler loop)
+- Ctrl+C produced `"shutting down"` then `"shutdown complete"` with no panic
+- `go test ./... && go build ./...` exits 0
+
+## Requirements Closed
+
+| Requirement | Satisfied By |
+|-------------|-------------|
+| WORK-01 | Worker binary starts, connects to Postgres, applies river migrations |
+| WORK-02 | HeartbeatWorker runs on schedule (RunOnStart + periodic) |
+| WORK-03 | Graceful shutdown: StopAndCancel(10s) + pool.Close() on SIGINT |
+| WORK-04 | SlogErrorHandler registered; error logging confirmed via orphan cleanup or test |
+
+## Self-Check: PASSED
+
+All 4 WORK requirements satisfied with observable end-to-end proof in a live dev environment.