langchain>=1.3,<2.0
langchain-openai>=1.1,<2.0
langgraph>=1.2,<2.0
langgraph-checkpoint-sqlite>=3.0,<4.0
langmem>=0.0.29,<1.0
prompt_toolkit>=3.0.52,<4.0.0
rich>=15.0.0,<16.0.0
