- Add TodoEntity, TodoDao, TodoRepository, and TodoRepositoryImpl for local todo storage with sync support
- Implement TodoViewModel with CRUD operations, group management, and subtask handling
- Create TodoScreen with Kanban-style board view, group-based organization, and drag-to-reorder support
- Add BrainDumpSheet for AI-powered task extraction from natural language input using Gemini API
- Implement TodoNot
- Add Glance dependencies (glance-appwidget:1.1.0, glance-material3:1.1.0) for Compose-based widgets
- Implement RecentLinksWidget (4×2) and QuickStatsWidget (2×1) with Glance framework
- Add legacy RemoteViews widget (ShaarliWidgetProvider) for backward compatibility
- Create WidgetSearchActivity for widget configuration and WidgetUpdateWorker for periodic updates
- Add reader mode support with readerContent and readerContentFetchedAt
- Document automatic token verification on startup and note:// prefix for Markdown notes
- Add extensive AI capabilities section (Gemini integration, auto-tagging, content classification, multi-model fallback)
- Document link health monitoring system with dead link detection and exclusion features
- Add file sharing support (Markdown/text files) and deep links documentation
- Update technology
