- Add token_file_exists() to ApiClient for sync token check
- App::new now checks for token on startup; shows DeviceAuth popup if missing
- Background thread starts OAuth Device Flow automatically when no token
- App::poll_auth() called each frame to detect auth completion
- Auth completion triggers SyncCommand::InitialSync
- run_initial_sync fetches all lists and tasks via Google Tasks API
- Stores results in local DB via replace_all_lists / replace_all_tasks
- App::check_initial_load() refreshes UI from DB after initial sync
- Removed all compile warnings (dead_code annotations)
- ApiClient with manual OAuth2 Device Flow (no yup-oauth2 dependency)
- Devide auth: POST device/code -> show URL+code -> poll token endpoint
- Token persistence in ~/.config/task_app/token.json
- CRUD: create_task, update_task, delete_task, move_task via Google Tasks API
- fetch_lists and fetch_tasks for initial sync import
- Db wraps Connection in std::sync::Mutex for thread-safe sharing via Arc
- Sync engine: background thread with tokio runtime, processes queue every 30s
- process_sync_queue drains sync_queue and calls API methods
- trigger_sync() called after every local mutation (create/update/delete/reorder)
- Network status propagated to UI (Online/Offline/Syncing)
- Initial sync skeleton ready for full import flow
- App struct with full state (lists, tasks, focus, popups, DB)
- Tab cycles focus: Tabs -> TaskList -> Detail -> Tabs
- Left/Right arrows switch lists when focus on Tabs
- Up/Down navigate tasks (TaskList) or scroll (Detail)
- Alt+Up/Down reorder tasks with position persistence
- n: create new list or task, d: delete, e: edit title
- Enter on Detail opens DatePicker popup
- InputPopup with full text editing (navigation, insert, delete)
- ConfirmDelete popup before destructive actions
- DatePicker adjusts draft_date with Up/Down
- main.rs: terminal setup, event loop, raw mode, alternate screen