Fix #7473: Prevent OpenHands from creating additional pull requests unless explicitly instructed

[xingyaoww]

This PR addresses issue #7473 by adding explicit instructions to the system prompt and GitHub microagent to prevent OpenHands from creating multiple pull requests for a single issue/session.

Changes

1. Added a new <GITHUB_PULL_REQUESTS> section to the system prompt with clear instructions to create only ONE pull request per session/issue unless explicitly instructed otherwise.
2. Updated the GitHub microagent to reinforce this behavior with more detailed instructions.
3. Added tests to verify that the system prompt and GitHub microagent contain the new instructions.

Testing

Added unit tests that verify the system prompt and GitHub microagent contain the new instructions.

@xingyaoww can click here to continue refining the PR

---

To run this PR locally, use the following command:

docker run -it --rm   -p 3000:3000   -v /var/run/docker.sock:/var/run/docker.sock   --add-host host.docker.internal:host-gateway   -e SANDBOX_RUNTIME_CONTAINER_IMAGE=docker.all-hands.dev/all-hands-ai/runtime:f20a794-nikolaik   --name openhands-app-f20a794   docker.all-hands.dev/all-hands-ai/openhands:f20a794

[enyst]

Small question here, I wonder if this could affect evals. It seems the new instructions on git say "do this", while the version control section are all "when", "if", "do not".

Feel free to ignore if you don't think so.

[xingyaoww]

the new instructions on git say "do this",

You mean the github.md file?

I assume all "git" relate issue probably won't affect eval -- we are just doing git add -A && git diff {base_commit} XXX on eval stuff so should be able to capture ALL diff 🤔

[enyst]

Not github.md, I mean this new section PULL_REQUESTS is in the system prompt, and it tells the LLM "create one PR per session/issue".

I wonder if the LLM will try to "create one PR", and spend steps trying and failing and idk, worst case losing track.

The older sections, for example VERSION_CONTROL, never tells "do this", it says "when you commit... " (so if you never commit, it's a no-op).

[xingyaoww]

very good point! i'll tweak that

[xingyaoww]

updated! feel free to re-review 🙏

[enyst]

I wonder if the PR will work as expected together with the microagent, but we could try this.

Had one more question on PRs, though I'm not sure it matters.

[enyst]

Love it!