fix: 更换cdn资源，要不公式调试页面有问题

resources/views/tools/question-preview.blade.php

@@ -6,17 +6,17 @@
     <meta name="csrf-token" content="{{ csrf_token() }}">
     <title>题目预览验证工具 - Math CMS</title>
 
-    <!-- KaTeX CSS -->
-    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.css">
+    <!-- KaTeX CSS (BootCDN 国内镜像) -->
+    <link rel="stylesheet" href="https://cdn.bootcdn.net/ajax/libs/KaTeX/0.16.9/katex.min.css">
 
-    <!-- Tailwind CSS CDN -->
-    <script src="https://cdn.tailwindcss.com"></script>
+    <!-- Tailwind CSS (Staticfile 七牛云镜像) -->
+    <script src="https://cdn.staticfile.net/tailwindcss/3.4.1/tailwind.min.js"></script>
 
-    <!-- Alpine.js -->
-    <script defer src="https://cdn.jsdelivr.net/npm/alpinejs@3.x.x/dist/cdn.min.js"></script>
+    <!-- Alpine.js (BootCDN 国内镜像) -->
+    <script defer src="https://cdn.bootcdn.net/ajax/libs/alpinejs/3.13.5/cdn.min.js"></script>
 
-    <!-- KaTeX JS -->
-    <script src="https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.js"></script>
+    <!-- KaTeX JS (BootCDN 国内镜像) -->
+    <script src="https://cdn.bootcdn.net/ajax/libs/KaTeX/0.16.9/katex.min.js"></script>
 
     <style>
         [x-cloak] { display: none !important; }