feat: Add core medical document validation module with text/image extraction and initial static UI page.

Professional UI redesign + Itinerary Template + SharePoint integration

Add Itinerary Template for 7-slide event/preceptorship documents

Switch to JavaScript-based login for HuggingFace compatibility

Fix cookie settings for HuggingFace proxy compatibility

Add password protection with session-based auth (APP_PASSWORD env var)

Add disclaimer for Check Quality Only button

Fix database path for HF Spaces (use /tmp for writable storage)

Add document comparison, bulk validation, and projects features

Update application code

Fix PermissionError: Use temp dir for image logs

Fix PermissionError: Remove file logging

Initial deployment to HF Spaces