fix: update import path for AppBar component and remove unnecessary comment in service worker file

src/App.vue

@@ -8,7 +8,7 @@
 </template>
 
 <script>
-import AppBar from '@/components/AppBar'
+import AppBar from '@/components/AppBar.vue'
 
 export default {
   name: 'App',

src/registerServiceWorker.js

@@ -1,4 +1,3 @@
-/* global workbox */
 // Registers the service worker generated by @vue/cli-plugin-pwa
 // This enables installability and offline caching for static assets.