- Add OfflineSyncCoordinator for managing offline/online transitions
- Add OfflineSyncIndicatorView for UI feedback during sync
- Add SyncProgress tracking with stage descriptions and progress bars
- Add delta sync support with savings tracking
- Add BackgroundTaskScheduler interval configs for low-power mode
- Add isProcessingTask discriminator to BackgroundTaskID
- Add DeltaFetchResult generic type for efficient data fetching
- Add SyncProgressStage enum with localized descriptions
- Add progress reset on app launch to prevent stale state
- Add delta sync savings percentage calculation
- Update BackgroundSyncTests with comprehensive coverage
- Add OfflineSyncTests for offline queue and conflict resolution
- Mark task 22 (Token Refresh) and task 28 (Review Compliance) as done
- Update Xcode project with new source files and build phases
Michael Freno
1511a844a7