updated modulepreload changeset

Author: shairez

.changeset/fair-cars-fry.md

@@ -2,5 +2,53 @@
 '@builder.io/qwik': minor
 ---
 
-PERF: Prefetching now happens dynamically without service worker if the prefetchImplementation is set to "html-append" (default).
-PERF: Initial prefetching now includes dynamic imports, which improves initial click delay.
+FEAT: Major improvements to prefetching with automatic bundle preloading
+
+- This removes the need for service workers, and instead utilize `modulepreload` link tags for better browser integration.
+- Improves initial load performance by including dynamic imports in the prefetch
+- Reduces complexity while maintaining similar (and even better) functionality
+- Enables some preloading capabilities in dev mode (SSR result only)
+- Includes path-to-bundle mapping in bundle graph (this improves the experience using the `<Link>` component, AKA "single page app" mode)
+- Server now has built-in manifest support (so no need to pass `manifest` around)
+- Moves insights-related build code to insights plugin
+
+---
+
+⚠️ **ATTENTION:**
+
+**Keep** your service worker code as is (either `<ServiceWorkerRegister/>` or `<PrefetchServiceWorker/>`).
+
+This new implementation will use it to uninstall the current service worker to reduce the unnecessary duplication.
+
+The builtin service workers components are deprecated but still exist for backwards compatibility.
+
+---
+
+You can configure the prefetch behavior in your SSR configuration:
+
+```ts
+// entry.ssr.ts
+export default function (opts: RenderToStreamOptions) {
+  return renderToStream(<Root />, {
+    prefetchStrategy: {
+      implementation: {
+        // Enable debug logging for prefetch operations
+        debug: true,
+        // Maximum simultaneous preload links
+        maxSimultaneousPreloads: 5,
+        // Minimum probability threshold for preloading
+        minPreloadProbability: 0.25
+      },
+    },
+    ...opts,
+  });
+}
+```
+
+For legacy apps that still need service worker functionality, you can add it back using:
+
+```bash
+npm run qwik add service-worker
+```
+
+This will add a basic service worker setup that you can customize for specific caching strategies, offline support, or other PWA features beyond just prefetching.