优化：使用 vitepress-plugin-pagefind 离线搜索插件替换 vitepress-plugin-search 插件，中文搜索相对友好一些（毕竟国人写的）

package.json

@@ -13,14 +13,12 @@
     "@arco-design/web-vue": "^2.44.5",
     "@types/blueimp-md5": "^2.18.0",
     "@types/jquery": "^3.5.16",
-    "flexsearch": "^0.7.31",
     "markdown-it": "^13.0.1",
     "mermaid": "9.3.0",
     "unplugin-vue-components": "^0.24.0",
     "vite": "^4.1.4",
     "vitepress": "1.0.0-alpha.63",
     "vitepress-plugin-mermaid": "2.0.8",
-    "vitepress-plugin-search": "1.0.4-alpha.19",
     "vue": "^3.2.47"
   },
   "dependencies": {
@@ -31,7 +29,9 @@
     "fast-glob": "^3.2.12",
     "gitalk": "^1.8.0",
     "gray-matter": "^4.0.3",
-    "jquery": "^3.6.3"
+    "jquery": "^3.6.3",
+    "pagefind": "^0.12.0",
+    "vitepress-plugin-pagefind": "^0.1.1"
   },
   "pnpm": {
     "overrides": {