Refactor project for Lung Cancer AI Advisor: update app and API descriptions, modify .gitignore to exclude Jupyter notebooks, and remove outdated deployment documentation. Delete unused files and enhance logging for better traceability.

Enhance API security and functionality by adding authentication middleware and session management. Updated app.py to include the new auth router and integrated authentication checks for protected endpoints. Modified requirements.txt to include necessary libraries for session handling. Updated .env.example to include authentication credentials. Improved retrieval functions with query expansion for better medical term matching and enriched context in responses.

Add export router to app.py and update requirements.txt for document generation libraries

Add application files

Initial commit