Load notes from IndexedDB first for instant display, then sync from
server in background. All mutations now persist to IDB when online,
keeping the cache always current. Eliminates empty state flash on load.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Extract toast store to standalone module so notes store can show toasts
- Add try/catch to all note mutations with optimistic updates + IDB queue on network error
- Wire up startSync/stopSync in layout to enable online/offline event listeners
- Reload notes from server after successful sync push to prevent data loss
- Connect SyncIndicator to real sync status with Lucide cloud icons
- Add 300ms minimum display time for status transitions
- Add e2e tests for offline create, edit, trash, and sync-on-reconnect
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
