Use when the user mentions PageSpeed Insights, Core Web Vitals, LCP, TBT, CLS, site speed, page speed score, slow website, performance optimisation, or similar. Guides a phased, verification-gated approach — images first, fonts second, JavaScript third — specifically designed to avoid the regressions that typically occur when AI agents try to fix everything in one pass. Encodes lessons from a real
Design e Frontend#javascript#aipor qzachh
