perf-web-optimization

Optimize web performance: bundle size, images, caching, lazy loading, and overall page speed. Use when a site is slow, when you need to reduce bundle size, fix layout shifts, improve Time to Interactive, or optimize for Lighthouse scores. Triggers on: web performance, bundle size, page speed, slow site, lazy loading. Do NOT use for Core Web Vitals–specific fixes (use core-web-vitals), running Lighthouse audits (use perf-lighthouse), or Astro-specific optimization (use perf-astro).