# LangGraph ecosystem — upgrade as a matched set
langchain-core==1.2.26
langchain-anthropic==1.4.0
langchain-openai==1.1.12
langchain-google-genai>=2.1.0
langgraph==1.1.6

# Observability (optional — used if LANGFUSE_* env vars are set)
langfuse==4.0.6

# E2B sandbox (optional — used when config.sandbox.backend == "e2b")
e2b-code-interpreter==1.0.3
