fastapi==0.162.2 uvicorn==0.54.0 python-dotenv==1.2.4 pydantic==2.14.3 langchain-core==1.7.6 langchain-google-genai==4.4.3 langchain-qdrant==1.1.0 langchain-text-splitters==1.1.3 google-genai==3.0.0 qdrant-client==1.20.0 pypdf==7.0.0 langdetect==1.0.9 httpx==0.28.1