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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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README.md
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@@ -45,7 +45,7 @@ User message -> Chat UI -> FastAPI WebSocket -> LangGraph Supervisor -> Speciali
| Component | Technology |
|-----------|-----------|
| Backend | Python 3.11+, FastAPI |
| Agent orchestration | LangGraph 0.4+, langgraph-supervisor |
| Agent orchestration | LangGraph 1.x, langgraph-supervisor |
| Session state | PostgreSQL 16 + langgraph-checkpoint-postgres |
| LLM | Claude Sonnet 4.6 (configurable: OpenAI, Azure OpenAI, Google) |
| Frontend | React 19, TypeScript, Vite |