Update to replace Photos Panel with My Files

Add My Files panel with custom categories (v1.0.2)

Replaces the empty Photos panel with a full-featured file manager:
- User-defined categories (Misc, Receipts, Photos, etc.)
- File upload with description and metadata
- Thumbnail preview for images
- PDF viewing with PdfJsViewer
- 10MB file size limit with warning
- Storage usage indicator (warns at 500MB)
- Search across files
- All files encrypted like other data

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>