Sydney Runkle eed0f6c289 feat(langchain): todo middleware (#33152) ...

Porting the [planning
middleware](39c0138d0f/src/deepagents/middleware.py (L21))
over from deepagents.

Also adding the ability to configure:
* System prompt
* Tool description

```py
from langchain.agents.middleware.planning import PlanningMiddleware
from langchain.agents import create_agent

agent = create_agent("openai:gpt-4o", middleware=[PlanningMiddleware()])

result = await agent.invoke({"messages": [HumanMessage("Help me refactor my codebase")]})

print(result["todos"])  # Array of todo items with status tracking
```

2025-09-30 02:23:26 +00:00

..

integration_tests

chore(langchain): add ruff rules D for langchain_v1 (#32808)

2025-09-03 15:26:17 -04:00

unit_tests

feat(langchain): todo middleware (#33152)

2025-09-30 02:23:26 +00:00

__init__.py

…