Add progress list page showing reading progress across all devices:
- GetAllProgress API endpoint: Returns all user progress with media details
- GetAllProgressData helper: Fetches progress data for SSR rendering
- ProgressWithMedia struct: Combines progress with book metadata
- Progress page template: Displays progress bars, device icons, sync sources
Features:
- Visual progress bars with percentage
- Device-specific icons (Kobo, KOReader, Web, Mobile)
- Last sync timestamp and device attribution
- EPUB CFI location display
- Cover image support with fallback
- Responsive grid layout
This gives users a unified view of their reading progress across all synced devices.
