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

app/Http/Controllers/Api/V1/Admin/Draw/AdminDrawFinanceSummaryController.php

@@ -2,13 +2,13 @@
 
 namespace App\Http\Controllers\Api\V1\Admin\Draw;
 
-use App\Http\Controllers\Controller;
 use App\Models\Draw;
-use App\Models\SettlementBatch;
 use App\Models\TicketItem;
 use App\Models\TicketOrder;
 use App\Support\ApiResponse;
+use App\Models\SettlementBatch;
 use Illuminate\Http\JsonResponse;
+use App\Http\Controllers\Controller;
 
 /**
  * GET /api/v1/admin/draws/{draw}/finance-summary — 单期投注/派彩汇总（客服/财务视角，PRD §15.4）。