review-pr

name	review-pr
description	Review a PR on workbench (Go CLI for S3C Docker Compose dev environments)
argument-hint	<pr-number-or-url>
disable-model-invocation	true
allowed-tools	Read, Bash(gh repo view *), Bash(gh pr view *), Bash(gh pr diff *), Bash(gh pr comment *), Bash(gh api *), Bash(git diff *), Bash(git log *), Bash(git show *)

Review GitHub PR

You are an expert code reviewer. Review this PR: $ARGUMENTS

Determine PR target

Parse $ARGUMENTS to extract the repo and PR number:

• If arguments contain REPO: and PR_NUMBER: (CI mode), use those values directly.
• If the argument is a GitHub URL (starts with https://github.com/), extract owner/repo and the PR number from it.
• If the argument is just a number, use the current repo from gh repo view --json nameWithOwner -q .nameWithOwner.

Output mode

• CI mode (arguments contain REPO: and PR_NUMBER:): post inline comments and summary to GitHub.
• Local mode (all other cases): output the review as text directly. Do NOT post anything to GitHub.

Steps

1. Fetch PR details:

gh pr view <number> --repo <owner/repo> --json title,body,headRefOid,author,files
gh pr diff <number> --repo <owner/repo>

2. Read changed files to understand the full context around each change (not just the diff hunks).

3. Analyze the changes against these criteria:

Area	What to check
Error wrapping	Use fmt.Errorf("...: %w", err), not %v — ensure errors are properly wrapped for errors.Is/errors.As
Context propagation	Pass context.Context through call chains, respect cancellation
Goroutine leaks	Ensure goroutines have exit conditions, use errgroup where appropriate
Template correctness	Go text templates in templates/ must produce valid JSON, YAML, shell scripts, or config files
Config defaults	Changes to EnvironmentConfig or defaults must not break existing environments
Docker Compose validity	Changes to docker-compose.yaml template must produce valid Compose v2 syntax
Embed consistency	New or renamed template files must be covered by the embed.go directives
Port conflicts	New services or port changes must not conflict with existing host-network ports
Feature flag gating	Optional components must be gated behind the correct Docker Compose profile
Security	No credentials or secrets in templates, no command injection in shell script templates
Breaking changes	Changes to CLI flags, values.yaml schema, or environment structure that break existing usage

4. Deliver your review:

If CI mode: post to GitHub

Part A: Inline file comments

For each issue, post a comment on the exact file and line. Keep comments short (1-3 sentences), end with — Claude Code. Use line numbers from the new version of the file.

Without suggestion block — single-line command, <br> for line breaks:

gh api -X POST -H "Accept: application/vnd.github+json" "repos/<owner/repo>/pulls/<number>/comments" -f body="Issue description.<br><br>— Claude Code" -f path="file" -F line=42 -f side="RIGHT" -f commit_id="<headRefOid>"

With suggestion block — use a heredoc (-F body=@-) so code renders correctly:

gh api -X POST -H "Accept: application/vnd.github+json" "repos/<owner/repo>/pulls/<number>/comments" -F body=@- -f path="file" -F line=42 -f side="RIGHT" -f commit_id="<headRefOid>" <<'COMMENT_BODY'
Issue description.

```suggestion
first line of suggested code
second line of suggested code

— Claude Code COMMENT_BODY

Only suggest when you can show the exact replacement. For architectural or design issues, just describe the problem.

#### Part B: Summary comment

Single-line command, `<br>` for line breaks. No markdown headings — they render as giant bold text. Flat bullet list only:

```bash
gh pr comment <number> --repo <owner/repo> --body "- file:line — issue<br>- file:line — issue<br><br>Review by Claude Code"

If no issues: just say "LGTM". End with: Review by Claude Code

If local mode: output the review as text

Do NOT post anything to GitHub. Instead, output the review directly as text.

For each issue found, output:

**<file_path>:<line_number>** — <what's wrong and how to fix it>

When the fix is a concrete line change, include a fenced code block showing the suggested replacement.

At the end, output a summary section listing all issues. If no issues: just say "LGTM".

End with: Review by Claude Code

What NOT to do

• Do not comment on markdown formatting preferences
• Do not suggest refactors unrelated to the PR's purpose
• Do not praise code — only flag problems or stay silent
• If no issues are found, post only a summary saying "LGTM"
• Do not flag style issues already covered by the project's linter (eslint, biome, pylint, golangci-lint)