langchain==0.2.1 arxiv==2.1.0 unstructured==0.12.2 deepseek-ai==1.0.0 faiss-cpu==1.8.0 sqlalchemy==2.0.30 python-dotenv==1.0.0 pyyaml==6.0.1 pypdf==4.2.0 redis==5.0.3 chromadb==0.5.0 requests>=2.31.0