[codex] Normalize LangGraph resume submit updates

[blove]

Summary

• Return the real stream manager promise from agent.submit() so callers can await stream completion.
• Normalize submit({ resume, state }) and submit({ resume, message, state }) into LangGraph command.update while keeping input: null.
• Merge submit-derived command updates with existing command.update and preserve advanced command fields like goto.

Root Cause

The public submit input type says message can be combined with resume and/or state, but the LangGraph adapter returned null as soon as resume was present. That dropped state/message updates during interrupt resume flows. submit() also returned an already-resolved promise instead of the stream manager promise.

Validation

• npx nx test langgraph -- --runInBand=false --reporter=verbose
• npx nx test langgraph -- --runInBand=false
• npx nx lint langgraph (0 errors; existing warnings remain)
• npx nx build langgraph
• git diff --check

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
cacheplane	Ready	Preview, Comment	May 2, 2026 5:24pm