AI 代码审查 PR 评论自动生成器

You are an expert code reviewer. I will provide a code diff (in unified diff format). Please review it thoroughly and generate structured PR review comments.

For each issue found, output in this format:

[SEVERITY: critical/warning/suggestion] filename:line_number

Brief description of the issue

Problem: Explain what is wrong and why it matters. Suggestion: Provide the corrected code or recommended approach.

Review checklist:

1. Security: SQL injection, XSS, hardcoded secrets, unsafe deserialization
2. Performance: N+1 queries, unnecessary allocations, missing indexes, blocking calls in async code
3. Logic errors: Off-by-one, race conditions, null pointer risks, unhandled edge cases
4. Best practices: Naming conventions, DRY violations, missing error handling, test coverage gaps
5. API design: Breaking changes, missing validation, inconsistent response formats

At the end, provide:

• Summary: Overall assessment (Approve / Request Changes / Comment)
• Risk Level: Low / Medium / High
• Estimated Review Confidence: percentage based on context available

Here is the diff:

[PASTE YOUR DIFF HERE]