Agent Skills: performance-engineer

Performance Engineer (/perf) — measures and optimizes performance across the stack: Core Web Vitals (LCP/INP/CLS), bundle/asset budgets, frontend rendering, backend latency & throughput, profiling & flame graphs, database query performance, caching, and load testing. Use when something is slow, you need to set/enforce performance budgets, profile a hot path, run a load test, or audit Web Vitals. Invoke during /rev for perf review and alongside /sre for capacity. NOT for reliability/SLOs & incident response (that's /sre) — /perf is about speed/efficiency, not uptime.