feat: 添加小程序 web-view Token 传递问题分析与修复方案，更新 H5 端 URL 验证逻辑

frontend/index.html

@@ -10,6 +10,22 @@
 
     <body>
       <script>window.__INITIAL_URL__ = document.URL;</script>
+      <!-- 🐞 原始 URL 验证 -->
+      <div id="url-check" style="display:none" data-url=""></div>
+      <script>
+        var u = document.URL;
+        document.getElementById('url-check').setAttribute('data-url', u);
+        console.log('[URL_CHECK] document.URL:', u);
+        console.log('[URL_CHECK] search:', location.search);
+        console.log('[URL_CHECK] has_token:', location.search.includes('token='));
+        // 如果没 token，在页面顶部写一行红色提示
+        if (!location.search.includes('token=')) {
+          var d = document.createElement('div');
+          d.style.cssText = 'position:fixed;top:0;left:0;right:0;z-index:99999;background:red;color:white;padding:10px;font-size:14px;text-align:center';
+          d.textContent = '⚠️ URL无token: search=[' + location.search + '] url=' + u.substring(0, 80);
+          document.body.prepend(d);
+        }
+      </script>
       <div id="root"></div>
       <script type="module" src="/src/main.tsx"></script>
     </body>