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feat: upgrade LangGraph to 1.x and migrate deprecated APIs

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- Bump langgraph from 0.4 to 1.0+, langgraph-supervisor from 0.0.12 to 0.0.30+
- Bump langchain-core, langchain-anthropic, langchain-openai to 1.x
- Add langchain>=1.0 dependency for new create_agent location
- Migrate create_react_agent -> create_agent (prompt -> system_prompt)
- Fix create_supervisor positional arg to named agents= parameter
- Replace AsyncMock checkpointer with InMemorySaver in tests (v1 type validation)
- Update version references in README, ARCHITECTURE, eng-review-plan
This commit is contained in:
Yaojia Wang
2026-04-06 14:51:51 +02:00
parent be5c84bcff
commit b8654aa31f
6 changed files with 22 additions and 20 deletions
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eng-review-plan.md
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@@ -104,8 +104,8 @@ smart-support/
## Tech Stack
- Python 3.11+, FastAPI, LangGraph v1.1.0
- langgraph-supervisor, langchain-mcp-adapters, langgraph-checkpoint-postgres v3.0.5
- Python 3.11+, FastAPI, LangGraph 1.x (currently 1.1.6)
- langgraph-supervisor 0.0.31, langchain-mcp-adapters, langgraph-checkpoint-postgres v3.0.5
- React (frontend), PostgreSQL 16 (via Docker Compose)
- Claude Sonnet 4.6 via `ChatAnthropic` (configurable via env)
- pytest + FastAPI TestClient for backend tests