Add wordninja anomaly heuristic to fix mashed text

Unpin groq to fix httpx proxies error

Pin httpx<0.28.0 to fix groq proxy issue

Fix get_embedding_dimension method call

Fix file upload XSRF error in Dockerfile

Fix HF Spaces white screen (disable CORS/XSRF)

Add .gitignore to exclude secrets

Initial commit for DocMind