Refactor fetch event handling in service worker to skip cross-origin requests and improve network call management

sw.js

@@ -57,11 +57,15 @@ self.addEventListener('activate', (event) => {
 
 // Fetch event - serve from cache, fallback to network
 self.addEventListener('fetch', (event) => {
-  // Skip API calls and health checks - always go to network
-  if (event.request.url.includes('/api/') || 
+  const url = new URL(event.request.url);
+  
+  // Skip cross-origin requests, API calls, health checks, and dynamic content
+  // Always let these go directly to the network
+  if (url.origin !== self.location.origin ||
+      event.request.url.includes('/api/') || 
       event.request.url.includes('/healthcheck') ||
       event.request.url.includes('services.xml')) {
-    event.respondWith(fetch(event.request));
+    // Let it pass through to the network without intervention
     return;
   }