refactor(vue): migrate app, routes, and tooling from Svelte

Replace the Svelte runtime, Vite plugin, Storybook adapter, and component files with Vue 3 equivalents while preserving the existing route table, page markup, styling, assets, deployment shape, and npm workflows.

Move shared and page-level state onto Vue refs, computed values, lifecycle hooks, and script setup components. Recreate the custom async router and translation composable as Vue-native modules so navigation and bilingual content continue to work without introducing a router or state-management dependency.

Adopt the maintained @lucide/vue package, remove the Svelte icon and map wrappers, and initialize MapLibre directly on the Helpdesk page. Replace the Svelte CSF story with a Vue Storybook story, remove obsolete aliases and generation/config files, and update the audited lockfile with no known vulnerabilities.

src/main.js

@@ -1,9 +1,8 @@
-import { mount } from 'svelte'
+import { createApp } from 'vue'
 import './app.css'
-import App from './App.svelte'
+import App from './App.vue'
 
-const app = mount(App, {
-  target: document.getElementById('app'),
-})
+const app = createApp(App)
+app.mount('#app')
 
 export default app