- Add PreviewModal component with support for images, PDFs, HTML, audio, video, and text-based formats
- FileCard now shows Preview + Download buttons side-by-side after conversion
- Preview opens in a modal overlay with Escape/backdrop-click to close
- Text files truncated at 100KB for preview performance
- Harden pdfjs-dist worker loading with try/catch fallback (runs on main thread if CDN fails)
- Add useSystemFonts option to PDF document loading for better text extraction
noah
ade7807754