Performance Profiler Identifies and suggests fixes for common performance bottlenecks in code. When to Use - User reports performance issues or slow code - Optimization requests - Code review for performance - User mentions "slow", "bottleneck", "optimization", "memory leak" Instructions 1. Identify Performance Anti-Patterns N+1 Query Problems: Inefficient Loops: Unnecessary Re-renders (React): Memory Leaks: - Event listeners not cleaned up - Timers not cleared - Circular references - Large caches without limits Blocking Operations: - Synchronous file I/O - Long-running calculations in UI thr…