experiment: try sub-agent delegation for PR reviews

[xingyaoww]

What

Point the pr-review-by-openhands.yml workflow at the extensions sub-agent branch (OpenHands/extensions#164) and enable use-sub-agents: true to experiment with file-level review delegation in this repo only.

Changes

• uses: changed from @main → @feat/pr-review-sub-agent-delegation
• Added use-sub-agents: true input

How it works

When a PR review is triggered in this repo, the main agent will act as a review coordinator that:

1. Spawns file_reviewer sub-agents (one per changed file) via the SDK DelegateTool
2. Delegates per-file review to each sub-agent
3. Consolidates findings and posts a single cohesive PR review

Revert plan

Once the experiment concludes and OpenHands/extensions#164 is merged:

• Revert uses: back to @main
• Keep or remove use-sub-agents based on experiment results

This PR was created by an AI assistant (OpenHands) on behalf of a user.

---

Agent Server images for this PR

• GHCR package: https://github.com/OpenHands/agent-sdk/pkgs/container/agent-server

Variants & Base Images

Variant	Architectures	Base Image	Docs / Tags
java	amd64, arm64	eclipse-temurin:17-jdk	Link
python	amd64, arm64	nikolaik/python-nodejs:python3.13-nodejs22-slim	Link
golang	amd64, arm64	golang:1.21-bookworm	Link

Pull (multi-arch manifest)

# Each variant is a multi-arch manifest supporting both amd64 and arm64
docker pull ghcr.io/openhands/agent-server:84690f6-python

Run

docker run -it --rm \
  -p 8000:8000 \
  --name agent-server-84690f6-python \
  ghcr.io/openhands/agent-server:84690f6-python

All tags pushed for this build

ghcr.io/openhands/agent-server:84690f6-golang-amd64
ghcr.io/openhands/agent-server:84690f6-golang_tag_1.21-bookworm-amd64
ghcr.io/openhands/agent-server:84690f6-golang-arm64
ghcr.io/openhands/agent-server:84690f6-golang_tag_1.21-bookworm-arm64
ghcr.io/openhands/agent-server:84690f6-java-amd64
ghcr.io/openhands/agent-server:84690f6-eclipse-temurin_tag_17-jdk-amd64
ghcr.io/openhands/agent-server:84690f6-java-arm64
ghcr.io/openhands/agent-server:84690f6-eclipse-temurin_tag_17-jdk-arm64
ghcr.io/openhands/agent-server:84690f6-python-amd64
ghcr.io/openhands/agent-server:84690f6-nikolaik_s_python-nodejs_tag_python3.13-nodejs22-slim-amd64
ghcr.io/openhands/agent-server:84690f6-python-arm64
ghcr.io/openhands/agent-server:84690f6-nikolaik_s_python-nodejs_tag_python3.13-nodejs22-slim-arm64
ghcr.io/openhands/agent-server:84690f6-golang
ghcr.io/openhands/agent-server:84690f6-java
ghcr.io/openhands/agent-server:84690f6-python

About Multi-Architecture Support

• Each variant tag (e.g., 84690f6-python) is a multi-arch manifest supporting both amd64 and arm64
• Docker automatically pulls the correct architecture for your platform
• Individual architecture tags (e.g., 84690f6-python-amd64) are also available if needed

[github-actions]

Python API breakage checks — ✅ PASSED

Result: ✅ PASSED

Action log

[github-actions]

REST API breakage checks (OpenAPI) — ✅ PASSED

Result: ✅ PASSED

Action log