added features

Remove obsolete deployment and placeholder files

Prepare Hugging Face Spaces deployment

Replace Python proxy with Nginx to support Streamlit WebSockets and fix blank screen

Fix 403 error: Unify deployment on port 7860 using FastAPI reverse proxy for Streamlit

Fix NumPy 2.x compatibility: pin numpy<2 for SHAP compatibility

Add placeholder frontend index.html to resolve missing file error

Streamline export bundle by removing auxiliary files

Initial commit