[REFACTOR] 優化資料庫查詢效能：在多個 Service 與 Controller 中加入 select 欄位限制，並新增租戶資料表索引 Migration。

app/Modules/Core/Controllers/RoleController.php

@@ -151,7 +151,7 @@ class RoleController extends Controller
      */
     private function getGroupedPermissions()
     {
-        $allPermissions = Permission::orderBy('name')->get();
+        $allPermissions = Permission::select('id', 'name', 'guard_name')->orderBy('name')->get();
         $grouped = [];
 
         foreach ($allPermissions as $permission) {