support for A2A to expose and use langgraph agents as remotely interoperable agents

[zeroasterisk]

We'd like a more convenient abstraction make to the LangGraph framework, perhaps using the new A2A python SDK for convenience. https://github.com/google-a2a/a2a-python

Yes we have some LangGraph sample agents in https://github.com/google-a2a/a2a-samples

But we would like a better and more convenient abstraction inside of the framework.

• A2A Protocol - langgraph and deployment ideas #4834
• Issue with LangGraph modifying config in-place during execution. Config was not resumed correctly #4884