pyzotero>=1.5.18
pypdf>=4.2
langgraph>=0.2.40
langchain-core>=0.3.0
langchain-deepseek>=0.1.2
langchain-openai>=0.2.0
langchain-ollama>=0.3.3
langchain-google-genai>=2.0.0
pydantic>=2.6
python-dotenv>=1.0
