React Code Review

This handles comprehensive React code reviews with a focus on practical issues that actually cause bugs and performance problems in production. It checks hook dependency arrays, component composition patterns, accessibility compliance, TypeScript typing, and React 19 specific features like Server Actions and useOptimistic. The examples are solid, showing real antipatterns like missing cleanup in useEffect or using manual fetching instead of TanStack Query. It categorizes findings by severity and delegates to a deeper architectural review agent when needed. Honest take: this is thorough enough to catch the kind of subtle React mistakes that slip through basic linting but will bite you later, especially around stale closures and unnecessary re-renders.