Add comprehensive annotations feature to bookmark detail views:
- Implement annotations list view with date formatting and state machine
- Add CSS-based highlighting for rd-annotation tags in WebView components
- Support Readeck color scheme (yellow, green, blue, red) for annotations
- Enable tap-to-scroll functionality to navigate to selected annotations
- Integrate annotations button in bookmark detail toolbar
- Add API endpoint and repository layer for fetching annotations
- Replace ServerConnectivity with CheckServerReachabilityUseCase
- Add InfoApiClient for /api/info endpoint
- Implement ServerInfoRepository with 30s cache TTL and 5s rate limiting
- Update ShareBookmarkViewModel to use ShareExtensionServerCheck manager
- Add server reachability check in AppViewModel on app start
- Update OfflineSyncManager to use new UseCase
- Extend SimpleAPI with checkServerReachability for Share Extension
- Replace multiple boolean properties with single OfflineBookmarkSyncState enum
- Add Use Case pattern for OfflineSyncManager with dependency injection
- Simplify LocalBookmarksSyncView using state-driven UI with external bindings
- Convert OfflineBookmarksViewModel to use @Observable instead of ObservableObject
- Move credentials from Core Data to Keychain for better persistence
- Implement comprehensive database migration for App Group containers
- Add structured logging throughout sync operations and API calls
Architecture improvements follow MVVM principles with clean separation of concerns.
- Add protocols for all UseCases and implement them in their respective classes
- Add DefaultUseCaseFactory and MockUseCaseFactory for dependency injection
- Implement all mock UseCases with dummy data
- Start migration of view models and views to protocol-based UseCase injection (not all migrated yet)
- Refactor previews and some initializers for easier testing
- Move SectionHeader to Components, update server settings UI text
- Add sample article.html for mock content
