code-reviewer

# Code Reviewer ## Overview Perform structured code reviews that identify bugs, security issues, performance problems, and maintainability concerns. Provides prioritized, actionable feedback with specific fix suggestions. ## Instructions When a user asks you to review code, a file, a diff, or a pull request, follow this process: ### Step 1: Understand the context Before reviewing, determine: - What does this code do? (feature, bugfix, refactor) - What language and framework is it using? - Are there tests included? - Is this a full file or a diff/patch? Read surrounding files if needed to understand the broader codebase context. ### Step 2: Review using this checklist Evaluate the code against each category in order of severity: **Correctness (Critical)** - Logic errors, off-by-one mistakes, wrong conditions - Unhandled null/undefined/empty cases - Race conditions or concurrency issues - Incorrect error handling (swallowed exceptions, wrong error types) - Missing input validation **Security (Critical)** - SQL injection, XSS, command injection - Hardcoded secrets, API keys, passwords - Improper authentication/authorization checks - Unsafe deserialization, path traversal - Missing rate limiting on public endpoints **Performance (High)** - N+1 queries in database loops - Unnecessary re-renders in UI components - Missing indexes for frequent queries - Unbounded memory growth (loading entire datasets) - Blocking operations on the main thread **Reliability (High)** - Mi...