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

app/Services/Draw/DrawTickService.php

@@ -2,11 +2,11 @@
 
 namespace App\Services\Draw;
 
-use App\Lottery\DrawStatus;
+use Carbon\Carbon;
 use App\Models\Draw;
+use App\Lottery\DrawStatus;
 use App\Services\LotterySettings;
 use App\Services\Settlement\SettlementOrchestrator;
-use Carbon\Carbon;
 
 /**
  * 每分钟调度：期号状态推进 → RNG（若到期号）→ 冷静期结束时进入结算态 → 补齐未来缓冲。