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

tests/Feature/WalletTransferScenariosTest.php

@@ -4,16 +4,16 @@
  * 钱包划转场景：鉴权、幂等、转入/转出成功·失败·处理中（与 PRD / MainSiteWalletGateway 行为对齐）。
  */
 
-use App\Lottery\ErrorCode;
+use Firebase\JWT\JWT;
 use App\Models\Player;
+use App\Models\WalletTxn;
+use App\Lottery\ErrorCode;
 use App\Models\PlayerWallet;
 use App\Models\TransferOrder;
-use App\Models\WalletTxn;
 use Database\Seeders\CurrencySeeder;
-use Database\Seeders\LotterySettingsSeeder;
-use Firebase\JWT\JWT;
-use Illuminate\Foundation\Testing\RefreshDatabase;
 use Illuminate\Support\Facades\Http;
+use Database\Seeders\LotterySettingsSeeder;
+use Illuminate\Foundation\Testing\RefreshDatabase;
 
 uses(RefreshDatabase::class);