- Create offline.html with user-friendly offline message
- Auto-redirect when connection is restored
- Use offline.html as navigateFallback instead of root
- Include offline.html in PWA assets for precaching
This ensures users see a proper offline page when opening the app without connection, instead of a browser error.
- Created icon-maskable.svg with full background (no transparency)
- Generated icon-512x512-maskable.png with 90% safe zone
- Updated manifest to use dedicated maskable icon
- Fixes white background issue on Windows taskbar/topbar