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

tests/Feature/AdminRiskPoolApiTest.php

@@ -1,11 +1,11 @@
 <?php
 
-use App\Models\AdminUser;
 use App\Models\Draw;
 use App\Models\RiskPool;
+use App\Models\AdminUser;
 use App\Models\RiskPoolLockLog;
-use Illuminate\Foundation\Testing\RefreshDatabase;
 use Illuminate\Support\Facades\Hash;
+use Illuminate\Foundation\Testing\RefreshDatabase;
 
 uses(RefreshDatabase::class);