Migrate all Vue components from Options API to <script setup>

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/views/AuthContainer.vue

@@ -8,15 +8,7 @@
   </main>
 </template>
 
-<script>
+<script setup>
 import Header from "@/components/Header.vue";
 import Navbar from "@/components/Navbar.vue";
-
-export default {
-  name: 'AuthContainer',
-  components: {
-    Header,
-    Navbar,
-  },
-};
 </script>