Review PR Skill

Review the current pull request and write the output to review.json.

Context

• The working directory is the PR branch checkout.
• The workflow provides an annotated diff in pr_diff.txt.
• The workflow provides the PR description in pr_description.txt.
• Focus on files and lines changed by this PR.
• Do not post comments or reviews to GitHub directly.

Review Scope

• Prioritize correctness, security, error handling, and meaningful performance issues.
• Include style or nit comments only when you can provide a concrete suggestion block.
• If a concern involves untouched code, mention it in the summary instead of an inline comment.
• Do not suggest adding test cases that only vary constructor inputs or struct fields when the existing test already covers the meaningful behavior. Only suggest new tests when they exercise a distinct code path or edge case.
• When a PR is clearly a V0 or initial implementation, frame robustness suggestions (timeouts, retries, lifecycle management) as optional future work rather than blocking concerns, unless they risk correctness, security, or data loss.

Diff Line Annotations

The diff file uses these prefixes:

• [OLD:n] for deleted lines on the old side. Use "LEFT".
• [NEW:n] for added lines on the new side. Use "RIGHT".
• [OLD:n,NEW:m] for unchanged context. Use "RIGHT" with line m.

Comment Requirements

Every comment body must start with one of these labels:

• 🚨 [CRITICAL] for bugs, security issues, crashes, or data loss.
• ⚠️ [IMPORTANT] for logic problems, edge cases, or missing error handling.
• 💡 [SUGGESTION] for worthwhile improvements or better patterns.
• 🧹 [NIT] for cleanup only when the comment includes a suggestion block.

Write comments with these constraints:

• Be concise, direct, and actionable.
• Do not add compliments or hedging.
• Prefer single-line comments.
• Keep ranges to at most 10 lines.
• Restrict inline comments to valid changed lines in this PR.

Suggestion Blocks

When proposing a code change, use:

<replacement code here>

Rules:

• Match the exact indentation of the original file.
• Include only replacement code.
• For multi-line suggestions, set start_line to the first line and line to the last line.

Output Format

Create review.json with this shape:

{
  "summary": "## Overview\n...\n\n## Concerns\n- ...\n\n## Verdict\nFound: 1 critical, 2 important, 3 suggestions\n\n**Request changes**",
  "comments": [
    {
      "path": "path/to/file",
      "line": 42,
      "side": "RIGHT",
      "start_line": 40,
      "body": "⚠️ [IMPORTANT] Short explanation\n\n```suggestion\nreplacement\n```"
    }
  ]
}

Field rules:

• path must be relative to the repository root.
• line is required and must target the correct side.
• start_line is optional and only for multi-line ranges.
• side must be "LEFT" or "RIGHT".

Summary Requirements

The summary must include:

• A high-level overview of the PR.
• Important concerns and any untouched-code concerns that could not be commented inline.
• Issue counts in the format Found: X critical, Y important, Z suggestions.
• A final recommendation of Approve, Approve with nits, or Request changes.

Final Checks

Before finishing:

• Validate review.json with jq.
• Fix invalid JSON if validation fails.
• Confirm line numbers match the annotated diff.
• Do not run gh pr review, gh pr comment, gh api, or any other command that posts to GitHub.

Your only output is the final review.json.