streamlit langchain==0.3.26 langchain-community==0.3.26 langchain-openai==0.3.27 langchain-huggingface==0.3.0 datasets==3.6.0 sentence-transformers==5.0.0 python-dotenv==1.1.1 pydantic==2.11.7 rank-bm25==0.2.2 langgraph==0.5.0 transformers==4.53.0 torch scikit-learn protobuf==3.20.3 faiss-cpu==1.11.0