Phase 1: API + Frontend Skelett

www/fahrschuldesk.de/src/App.vue

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+<template>
+  <div id="app" :style="customStyles">
+    <router-view v-slot="{ Component }">
+      <transition name="fade" mode="out-in">
+        <component :is="Component" />
+      </transition>
+    </router-view>
+  </div>
+</template>
+
+<script setup>
+import { computed } from 'vue'
+import { useAuthStore } from '@/stores/auth'
+
+const auth = useAuthStore()
+
+const customStyles = computed(() => {
+  if (!auth.tenant) return {}
+  return {
+    '--color-primary': auth.tenant.primary_color || '#2563eb',
+    '--color-secondary': auth.tenant.secondary_color || '#64748b',
+  }
+})
+</script>
+
+<style>
+#app {
+  min-height: 100vh;
+  background-color: #f8fafc;
+}
+</style>