scaffold: Vue 3 frontend — router, stores, views, composables, layouts

Complete frontend skeleton: Vite + Vue 3 + TypeScript + Tailwind CSS,
Pinia stores (auth, server, wipe, plugins), authenticated API composable,
full route tree with auth guards, DashboardLayout with sidebar nav,
23 view stubs across auth/admin/public, all TypeScript interfaces.

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

frontend/src/main.ts

@@ -0,0 +1,17 @@
+import { createApp } from 'vue'
+import { createPinia } from 'pinia'
+import piniaPluginPersistedstate from 'pinia-plugin-persistedstate'
+
+import App from './App.vue'
+import router from './router'
+import './style.css'
+
+const app = createApp(App)
+
+const pinia = createPinia()
+pinia.use(piniaPluginPersistedstate)
+
+app.use(pinia)
+app.use(router)
+
+app.mount('#app')