Astro Framework

This is a well-structured framework skill that knows when to use Astro and, more importantly, when not to. The decision trees are genuinely helpful: there's practical guidance on choosing between static, hybrid, and server modes, and the hydration advice calls out real mistakes like using client:visible on above-the-fold content. The Content Layer API coverage spans glob loaders for local files through to live loaders for fresh data, and the server islands explanation clarifies when you need per-request rendering versus client interactivity versus just static HTML. Good for content-heavy sites with selective interactivity, but it correctly steers you away if you're building a full SPA or need React Server Components.