- config_snapshot_created event after successful snapshot INSERT
- config_snapshot_skipped_duplicate event on dedup match
- config_diff_generated event after diff INSERT
- config_backup_manual_trigger event on manual trigger success
- All log_action calls wrapped in try/except for safety
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add RETURNING id to snapshot INSERT for new_snapshot_id capture
- Call generate_and_store_diff after successful commit (best-effort)
- Outer try/except safety net ensures snapshot ack never blocked by diff
- Update subscriber tests to mock diff service
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- NATS subscriber for config.snapshot.> on DEVICE_EVENTS stream
- Dedup by SHA256 hash against latest snapshot per device
- OpenBao Transit encryption before INSERT (plaintext never stored)
- Malformed/orphan messages acked and discarded safely
- Transit failure causes nak for NATS retry
- Prometheus metrics: ingested, dedup_skipped, errors, duration
- All 6 unit tests pass
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
