deps: remove PWA and impl mermaid.

- I HATE PERSISTENT CACHE!

vuepress.config.ts

@@ -1,4 +1,5 @@
 import { defineUserConfig } from "vuepress";
+import { removePwaPlugin } from "@vuepress/plugin-remove-pwa"
 import theme from "./src/theme.hope.js";
 
 export default defineUserConfig({
@@ -15,8 +16,10 @@ export default defineUserConfig({
 
   theme,
 
-  // 和 PWA 一起启用
   shouldPrefetch: false,
+  plugins: [
+    removePwaPlugin({}),
+  ],
 
   head: [
     // 导入相应链接