fix: bypass service worker cache for dynamic /api/ endpoints, resolving stale favorites cache

sw.js

@@ -1,4 +1,4 @@
-const CACHE_NAME = 'mischlabs-pwa-v25';
+const CACHE_NAME = 'mischlabs-pwa-v26';
 const APP_SHELL = [
   '/',
   '/index.html',
@@ -6,7 +6,7 @@ const APP_SHELL = [
   '/offline.html',
   '/style.css?v=33',
   '/auth.js?v=2',
-  '/app.js?v=39',
+  '/app.js?v=40',
   '/favorites.js?v=1',
   '/services.json?v=1',
   '/manifest.webmanifest?v=4',
@@ -41,6 +41,12 @@ self.addEventListener('fetch', (event) => {
     return;
   }
 
+  // Do not intercept or cache API requests
+  const url = new URL(request.url);
+  if (url.pathname.startsWith('/api/')) {
+    return;
+  }
+
   if (request.mode === 'navigate') {
     event.respondWith(
       fetch(request).catch(() => caches.match('/offline.html'))