Final production configuration: Firebase Hosting, Render Blueprint and CORS security fix

frontend/src/views/AdminShuttles.vue

@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { ref, onMounted, computed } from 'vue';
+import { ref } from 'vue';
 import { useRouter } from 'vue-router';
 import { API_URL } from '@/services/apiClient';
 import axios from 'axios';