web: adopt Cache Components, Partial Prefetching and ensureStatic

web/next.config.mjs

@@ -22,6 +22,13 @@ function remotePatterns() {
 
 const nextConfig = {
   output: "standalone",
+  cacheComponents: true,
+  partialPrefetching: true,
+  // Next renders every page per request, uncached, for the crawlers and
+  // link-preview bots on its "HTML-limited" list, so their metadata is never
+  // streamed after <head>. No page here streams metadata (it all comes from
+  // cached CMS data), so no bot needs that; this pattern matches none
+  htmlLimitedBots: /(?!)/,
   images: {
     remotePatterns: remotePatterns(),
     formats: ["image/avif", "image/webp"],