langchain==0.3.13 langchain-community==0.3.13 langchain-core==0.3.28 langchain-huggingface==0.1.2 langchain-text-splitters==0.3.3 huggingface_hub llama-cpp-python PyPDF2==3.0.1 faiss-cpu==1.7.4 ctransformers pypdf chromadb tiktoken pysqlite3-binary streamlit-extras InstructorEmbedding sentence-transformers langchain-community