June 15, 2025 - PDF Viewer CORS Handling & External Citations Fix

Fixed PDF preview issues for external citations in agents with enhanced CORS handling, loading states, and fallback options.

🐛 Bug Fixes

• PDF Preview for External Citations: Fixed PDF viewer issues when agents cite external PDF URLs

• CORS Error Handling: Implemented proper CORS detection and handling for external PDF sources

• PDF Loading States: Added loading indicators while testing PDF accessibility and CORS compatibility

🔧 Improvements

• Enhanced PDF Viewer Component: New PDF viewer with robust error handling for cross-origin requests

• Fallback Options: When CORS issues are detected, users can now open PDFs in a new tab as an alternative

• Improved User Experience: Better feedback during PDF loading and error states for agent citations

📝 Technical Details

• Introduced a hook to check for CORS errors before rendering PDF content

• Displays loading state while testing CORS compatibility

• Provides alternative access methods when cross-origin restrictions are detected

• Enhances the reliability of PDF citations in agent responses