重构：扩展默认主题的页脚配置

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

@@ -0,0 +1,17 @@
+<template>
+  <Layout>
+    <template #layout-bottom>
+      <Copyright />
+    </template>
+  </Layout>
+</template>
+
+<script lang="ts" setup>
+import DefaultTheme from "vitepress/theme"
+import Copyright from "./Copyright.vue"
+
+const { Layout } = DefaultTheme
+</script>
+
+<style scoped>
+</style>