fix: 修复升级后整站无样式与点击特效失效

- 旧哈希静态资源随版本升级被删除，被缓存的 HTML 仍请求旧文件名导致
  FileNotFoundException 500，补 compat/assets 历史资源并在构建时合并
- postbuild 增加静态资源引用校验，缺失即构建失败
- ClickEffect 改为常驻配置节点 + data 属性驱动，避免配置未落库时静默失效；
  强制回流修正 transition 不触发；特效层挂到 body 下避免被导航栏遮挡
- 新增 scripts: postbuild/snapshot-assets/package/smoke-clickfx
- 版本 1.2.1

package.json

@@ -1,12 +1,15 @@
 {
-  "version": "1.2.0",
+  "version": "1.2.1",
   "type": "module",
   "engines": {
     "node": ">=22.12.0"
   },
   "scripts": {
     "dev": "nodemon --config nodemon.json --exec 'astro build'",
-    "build": "astro build && node -e \"const fs=require('fs');const src='templates/logo.png';const dst='templates/assets/logo.png';if(fs.existsSync(src)){fs.copyFileSync(src,dst)}\"",
+    "build": "astro build && node scripts/postbuild.mjs",
+    "snapshot": "node scripts/snapshot-assets.mjs",
+    "package": "node scripts/package.mjs",
+    "smoke": "node scripts/smoke-clickfx.mjs",
     "astro": "astro",
     "format": "prettier --write ."
   },