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

app/Services/Config/PlayConfigStreamService.php

@@ -2,15 +2,15 @@
 
 namespace App\Services\Config;
 
-use App\Lottery\ConfigVersionStatus;
+use App\Models\PlayType;
 use App\Models\AdminUser;
+use Illuminate\Http\Request;
+use App\Services\AuditLogger;
 use App\Models\PlayConfigItem;
 use App\Models\PlayConfigVersion;
-use App\Models\PlayType;
-use App\Services\AuditLogger;
-use Illuminate\Contracts\Pagination\LengthAwarePaginator;
-use Illuminate\Http\Request;
 use Illuminate\Support\Facades\DB;
+use App\Lottery\ConfigVersionStatus;
+use Illuminate\Contracts\Pagination\LengthAwarePaginator;
 
 /** 后台：玩法配置版本（{@see play_config_versions} / {@see play_config_items}） */
 final class PlayConfigStreamService