- 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>
- Test success returns 201 with sha256_hash
- Test NATS timeout returns 504
- Test poller failure returns 502
- Test device not found returns 404
- Test lock contention returns 409
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add RouterConfigSnapshot model with Transit ciphertext config_text
and SHA-256 plaintext hash for deduplication
- Add RouterConfigDiff model for unified diffs between snapshots
- Add RouterConfigChange model for parsed semantic changes
- Export all three from app.models barrel file
- Add unit tests for importability, table names, columns, and types
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>