- Add complete SQLite schema with Room database (content_cache, schedules, callbacks, history)
- Implement WorkManager FetchWorker with exponential backoff and network constraints
- Add AlarmManager NotifyReceiver with TTL-at-fire logic and notification delivery
- Create BootReceiver for automatic rescheduling after device reboot
- Update AndroidManifest.xml with necessary permissions and receivers
- Add Room, WorkManager, and Kotlin coroutines dependencies to build.gradle
feat(callback-registry)!: implement callback registry with circuit breaker
- Add CallbackRegistryImpl with HTTP, local, and queue callback support
- Implement circuit breaker pattern with exponential backoff retry logic
- Add CallbackEvent interface with structured event types
- Support for exactly-once delivery semantics with retry queue
- Include callback status monitoring and health checks
feat(observability)!: add comprehensive observability and health monitoring
- Implement ObservabilityManager with structured logging and event codes
- Add performance metrics tracking (fetch, notify, callback times)
- Create health status API with circuit breaker monitoring
- Include log compaction and metrics reset functionality
- Support for DNP-* event codes throughout the system
feat(web)!: enhance web implementation with new functionality
- Integrate callback registry and observability into web platform
- Add mock implementations for dual scheduling methods
- Implement performance tracking and structured logging
- Support for local callback registration and management
- Enhanced error handling and event logging
BREAKING CHANGE: New Android dependencies require Room, WorkManager, and Kotlin coroutines
Matthew Raymer