Add shared paginate() helper with total count to all list endpoints.
Add request logging middleware (method, path, status, duration, IP).
Add data retention service with configurable thresholds and CLI command.
- Heartbeat service: check_sensor_status (online/stale/offline)
- GET /sensors/heartbeat: status summary for all sensors
- POST /sensors/heartbeat: refresh heartbeat status
- GET /sensors/<hostname>/metrics: activity counts, recent events
- CLI command: flask check-heartbeats
- Added 7 new tests (34 total)
- GET /sensors/<hostname>/config: query sensor STATUS, parse response
- PUT /sensors/<hostname>/config: update rate, power, adaptive, etc.
- POST /sensors/<hostname>/ota: trigger OTA update with URL
- POST /sensors/<hostname>/calibrate: trigger baseline calibration
Added 14 new tests for fleet management endpoints.
