refactor：拆分 API 路由与请求校验，统一 final 类和代码风格

database/seeders/LotterySettingsSeeder.php

@@ -2,13 +2,13 @@
 
 namespace Database\Seeders;
 
-use App\Services\LotterySettings;
 use Illuminate\Database\Seeder;
+use App\Services\LotterySettings;
 
 /**
  * 【配置中心】示例键；后续由运营后台维护同表即可。
  */
-class LotterySettingsSeeder extends Seeder
+final class LotterySettingsSeeder extends Seeder
 {
     public function run(): void
     {