style: 統一所有表格標題樣式為一般粗細並修正排序功能

app/Http/Controllers/Admin/UserController.php

@@ -18,15 +18,23 @@ class UserController extends Controller
     public function index(Request $request)
     {
         $perPage = $request->input('per_page', 10);
+        $sortBy = $request->input('sort_by', 'id');
+        $sortOrder = $request->input('sort_order', 'asc');
 
-        $users = User::with(['roles:id,name,display_name'])
-            ->orderBy('id')
-            ->paginate($perPage)
-            ->withQueryString();
+        $query = User::with(['roles:id,name,display_name']);
+
+         // Handle sorting
+        if (in_array($sortBy, ['name', 'created_at'])) {
+           $query->orderBy($sortBy, $sortOrder);
+        } else {
+           $query->orderBy('id', 'asc');
+        }
+
+        $users = $query->paginate($perPage)->withQueryString();
 
         return Inertia::render('Admin/User/Index', [
             'users' => $users,
-            'filters' => $request->only(['per_page']),
+            'filters' => $request->only(['per_page', 'sort_by', 'sort_order']),
         ]);
     }