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

app/Services/Settlement/SettlementOrchestrator.php

@@ -2,22 +2,22 @@
 
 namespace App\Services\Settlement;
 
-use App\Lottery\DrawResultBatchStatus;
-use App\Lottery\DrawStatus;
-use App\Lottery\SettlementBatchStatus;
 use App\Models\Draw;
-use App\Models\DrawResultBatch;
-use App\Models\DrawResultItem;
-use App\Models\JackpotPool;
 use App\Models\Player;
-use App\Models\SettlementBatch;
 use App\Models\TicketItem;
+use App\Lottery\DrawStatus;
+use App\Models\JackpotPool;
 use App\Models\TicketOrder;
+use App\Models\DrawResultItem;
+use App\Models\DrawResultBatch;
+use App\Models\SettlementBatch;
+use Illuminate\Support\Facades\DB;
+use App\Lottery\DrawResultBatchStatus;
+use App\Lottery\SettlementBatchStatus;
 use App\Models\TicketSettlementDetail;
-use App\Services\Jackpot\JackpotBurstAllocator;
 use App\Services\Ticket\RiskPoolService;
 use App\Services\Ticket\TicketWalletService;
-use Illuminate\Support\Facades\DB;
+use App\Services\Jackpot\JackpotBurstAllocator;
 
 /**
  * 阶段 6：对已发布开奖、处于 `settling` 的期号执行结算（匹配 → 回水派彩调整 → Jackpot 爆池分配 → 明细 → 风险池释放 → 入账）。