修复：UserController::show 返回格式改为 {status, data} 包装

- 匹配 Alpine.js fetchUser 期望的 data.status === 'success' 判断
- 这是双击用户名弹窗不显示的根本原因

app/Http/Controllers/UserController.php

@@ -41,16 +41,19 @@ class UserController extends Controller
 
         // 隐藏关键信息，只返回公开资料
         return response()->json([
-            'username' => $user->username,
-            'sex' => $user->sex,
-            'headface' => $user->headface,
-            'usersf' => $user->usersf,
-            'user_level' => $user->user_level,
-            'exp_num' => $user->exp_num ?? 0,
-            'jjb' => $user->jjb ?? 0,
-            'qianming' => $user->qianming,
-            'sign' => $user->sign ?? '这个人很懒，什么都没留下。',
-            'created_at' => $user->created_at->format('Y-m-d'),
+            'status' => 'success',
+            'data' => [
+                'username' => $user->username,
+                'sex' => $user->sex,
+                'headface' => $user->headface,
+                'usersf' => $user->usersf,
+                'user_level' => $user->user_level,
+                'exp_num' => $user->exp_num ?? 0,
+                'jjb' => $user->jjb ?? 0,
+                'qianming' => $user->qianming,
+                'sign' => $user->sign ?? '这个人很懒，什么都没留下。',
+                'created_at' => $user->created_at->format('Y-m-d'),
+            ],
         ]);
     }