Sergei
2b68b70584
Add sensor system documentation
BLE_PROTOCOL.md:
- ESP32 BLE provisioning protocol spec
- Characteristics UUIDs and data formats
- WiFi credential exchange flow
- Security considerations
- Error handling
SENSORS_IMPLEMENTATION_PLAN.md:
- Complete implementation roadmap
- Phase 1: BLE scanning and connection
- Phase 2: WiFi provisioning
- Phase 3: Device management
- Phase 4: Status monitoring
- API endpoints and data models
- Testing checklist
Technical reference for:
- Backend developers
- Mobile developers
- QA team