fastapi uvicorn[standard] pydantic python-multipart flask flask_cors python-socketio python-jose passlib[bcrypt] uuid requests aiohttp peewee bcrypt litellm argon2-cffi apscheduler google-generativeai langchain langchain-community fake_useragent chromadb sentence_transformers pypdf docx2txt unstructured markdown pypandoc pandas openpyxl pyxlsb xlrd opencv-python-headless rapidocr-onnxruntime faster-whisper PyJWT pyjwt[crypto] black