变量定义，title优化

src/App.vue

@@ -1,9 +1,13 @@
 <script setup>
 import { useGlobalConfigStore } from '@/stores/GlobalConfigStore'
-import { $changeLocale, elementLocale } from '@/messages'
+import { $changeLocale, elementLocale, $i18nBundle } from '@/messages'
+import { useTitle } from '@vueuse/core'
+import { computed } from 'vue'
 
 const globalConfigStore = useGlobalConfigStore()
 $changeLocale(globalConfigStore.currentLocale)
+const title = computed(() => $i18nBundle('common.label.title'))
+useTitle(title)
 </script>
 
 <template>