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apps/frontend/src/App.vue

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+<script setup lang="ts">
+import { computed } from 'vue';
+import { useRoute, RouterView } from 'vue-router';
+import BottomTabBar from './components/navigation/BottomTabBar.vue';
+import QuickAddButton from './components/actions/QuickAddButton.vue';
+
+const route = useRoute();
+const showAppShell = computed(() => !route.path.startsWith('/auth'));
+</script>
+
+<template>
+  <div class="min-h-screen bg-gray-100 text-gray-900">
+    <div class="max-w-xl mx-auto min-h-screen relative pb-24">
+      <RouterView />
+      <QuickAddButton v-if="showAppShell" />
+    </div>
+    <BottomTabBar v-if="showAppShell" />
+  </div>
+</template>