...It encodes knowledge drawn from Google Lighthouse audits, Core Web Vitals heuristics, WCAG accessibility guidelines, and real-world engineering experience, allowing coding agents to automatically assess and suggest improvements. These skills are framework-agnostic, meaning they apply to React, Vue, Svelte, Angular, Astro, or even plain HTML projects. For example, an agent can use these skills to audit a page’s performance, identify bottlenecks in loading speed, fix layout shift issues, suggest accessibility enhancements, or recommend SEO improvements. The guidance is designed to be triggered by typical developer requests related to web quality and to produce actionable suggestions rooted in well-established standards.