[FEAT] 優化部署流程：加入 RoleSeeder 與 AdminUserSeeder，並實作權限系統基礎架構與多租戶隔離機制

database/seeders/AdminUserSeeder.php

@@ -27,19 +27,20 @@ class AdminUserSeeder extends Seeder
                 'name' => 'Admin',
                 'email' => 'admin@star-cloud.com',
                 'password' => Hash::make('password'),
-                'role' => 'admin',
             ]);
+            $admin->assignRole('super-admin');
             return;
         }
 
-        User::create([
+        $admin = User::create([
             'username' => 'admin',
             'name' => 'Admin',
             'email' => 'admin@star-cloud.com',
             'password' => Hash::make('password'),
-            'role' => 'admin',
         ]);
 
+        $admin->assignRole('super-admin');
+
         $this->command->info('Admin 帳號建立成功！');
     }
 }