- Service worker reports image caching progress back to main thread
- Sync progress shows current phase (recipes, pages, data, images)
- Display progress bar for image downloads in sync tooltip
- Use mediapath for thumbnail URLs (with hash for cache busting)
- Serve cached thumbnails as fallback for full/placeholder when offline
- Auto-sync recipes every 30 minutes when online in PWA mode
- Only show offline sync button when running as installed PWA
- Detect standalone mode via display-mode media query and iOS check
- Trigger initial sync on PWA install (appinstalled event)
- Listen for online event to sync when coming back online
- Store last sync time in localStorage to track sync intervals
- Add service worker with caching for build assets, static files, images, and pages
- Add IndexedDB storage for recipes (brief and full data)
- Add offline-db API endpoint for bulk recipe download
- Add offline sync button component in header
- Add offline-shell page for direct navigation fallback
- Pre-cache __data.json for client-side navigation
- Add +page.ts universal load functions with IndexedDB fallback
- Add PWA manifest and icons for installability
- Update recipe page to handle missing data gracefully
