- When setting a new task to DOING, the previous DOING task now switches to PENDING instead of TODO
- Task display order now prioritizes by status: DONE < DOING < PENDING < TODO, with order field respected within each status group
- Implement notes database schema and API endpoints
- Add notes page with filtering, search, and markdown support
- Persist selected goal and task preferences for better UX
- Include responsive design and mobile-friendly layout
- Replace TinyDB (JSON file) with sqlite3 for data persistence
- Add schema.py: table creation + data migration from db.json
- Rewrite database.py: all CRUD operations use sqlite3 directly
- All data retains original IDs via migration script
- Remove tinydb dependency from pyproject.toml
- Flask backend with TinyDB database
- Multi-user auth with bcrypt password hashing
- Goal CRUD with activation/deactivation and per-user limits
- Task CRUD with status tracking (todo/doing/pending/done)
- Focus rule: one doing task per goal
- Time picker-style scroll view with drag-and-drop reordering
- Admin panel for user management
- uv environment management
