Phase B operational cutover verification:
- Config source cutover from TOML to DB confirmed
- Hot-reload cadence test passed (rate-limit guarantee)
- Enable/disable cycle test passed (preserved_last_poll)
- 10-minute soak with zero errors
- Data integrity verified (all alerts in DB)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
