feat: added bulk processing, html reporting, and geometric table extraction

feat: PDF preview, database integration, and improved error handling

refactor: remove obsolete OCR test file and enhance address extraction logic

Refactor: Replace Tesseract with DocTR and integrate LayoutLMv3-DocTR model

feat: add AI detection overlay visualization with bounding boxes on extracted entities

Restore full history with LFS images and all fixes

feat: Add Phase 3 generalization scripts and clean up legacy files

feat: LayoutLMv3 integration, Streamlit UI toggle, README refresh, .gitignore