02e1445e01
- Added endpoints for previewing original and processed PDF files. - Implemented on-demand text extraction from original and processed PDFs. - Updated file detail page to show original and processed file paths with existence status. - Introduced GPT metadata display with a collapsible JSON view. - Enhanced front-end with PDF.js for in-browser PDF rendering and improved user experience. - Added integration tests for new features including metadata display and file previews.