重构：再次扩展默认主题的页脚配置，后续可提供更多的扩展性

repos/.vitepress/theme/components/MyLayout.vue

@@ -3,14 +3,20 @@
     <template #doc-after>
       <Comment />
     </template>
+    <template #layout-bottom>
+      <Copyright v-if="(theme.footerConfig?.showFooter ?? true) && (frontmatter?.showFooter ?? true)" />
+    </template>
   </Layout>
 </template>
 
 <script lang="ts" setup>
 import DefaultTheme from 'vitepress/theme'
+import { useData } from 'vitepress'
 import Comment from './Comment.vue'
+import Copyright from './Copyright.vue'
 
 const { Layout } = DefaultTheme
+const { theme, frontmatter } = useData()
 </script>
 
 <style scoped>