review-performance

Analyzes code for performance and scalability issues, producing fitness scores (1-10) across algorithmic efficiency, database design, caching strategy, scalability readiness, resource utilization, and data pipeline efficiency. Use when the user says /review:performance, requests a performance review, asks for scalability analysis, wants to find N+1 queries or Big-O hot paths, or needs performance fitness scores before shipping. Only reports findings with confidence >= 7/10.