Plan for implementing automatic EXIF data extraction from uploaded images:
- Extract capture date, camera model, and GPS coordinates
- Use earliest capture date for chronological group sorting
- Add new database fields: capture_date, exif_date_taken, exif_camera_model
- Implement ExifService with exifr library
- Create migration script for existing images
- Update slideshow sorting logic with EXIF-based chronology
- Fallback to year/upload date when EXIF unavailable
Estimated effort: 5-7 hours (3 phases)
Dependencies: exifr npm package
