feat: 添加结算功能，更新 TicketItem 模型以支持最新结算详情，增强 DrawTickService 以自动处理结算，更新 TicketWalletService 以支持派彩入账，扩展 API 路由以管理结算批次和奖池

app/Http/Controllers/Api/V1/Admin/Settlement/AdminSettlementBatchIndexController.php

@@ -0,0 +1,67 @@
+<?php
+
+namespace App\Http\Controllers\Api\V1\Admin\Settlement;
+
+use App\Http\Controllers\Controller;
+use App\Models\SettlementBatch;
+use App\Support\ApiResponse;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+
+/**
+ * GET /api/v1/admin/settlement-batches — 结算批次分页列表。
+ */
+final class AdminSettlementBatchIndexController extends Controller
+{
+    public function __invoke(Request $request): JsonResponse
+    {
+        $perPage = min(max((int) $request->integer('per_page', 25), 1), 100);
+        $page = max((int) $request->integer('page', 1), 1);
+        $drawNo = trim((string) $request->query('draw_no', ''));
+        $status = trim((string) $request->query('status', ''));
+
+        $q = SettlementBatch::query()
+            ->with(['draw:id,draw_no'])
+            ->orderByDesc('id');
+
+        if ($drawNo !== '') {
+            $q->whereHas('draw', fn ($d) => $d->where('draw_no', 'like', '%'.$drawNo.'%'));
+        }
+
+        if ($status !== '') {
+            $q->where('status', $status);
+        }
+
+        $paginator = $q->paginate($perPage, ['*'], 'page', $page);
+
+        return ApiResponse::success([
+            'items' => collect($paginator->items())->map(fn (SettlementBatch $b) => $this->row($b))->all(),
+            'meta' => [
+                'current_page' => $paginator->currentPage(),
+                'per_page' => $paginator->perPage(),
+                'total' => $paginator->total(),
+                'last_page' => $paginator->lastPage(),
+            ],
+        ]);
+    }
+
+    /** @return array<string, mixed> */
+    private function row(SettlementBatch $b): array
+    {
+        return [
+            'id' => (int) $b->id,
+            'draw_id' => (int) $b->draw_id,
+            'draw_no' => $b->draw?->draw_no,
+            'result_batch_id' => (int) $b->result_batch_id,
+            'settle_version' => (int) $b->settle_version,
+            'status' => $b->status,
+            'total_ticket_count' => (int) $b->total_ticket_count,
+            'total_win_count' => (int) $b->total_win_count,
+            'total_payout_amount' => (int) $b->total_payout_amount,
+            'total_jackpot_payout_amount' => (int) $b->total_jackpot_payout_amount,
+            'started_at' => $b->started_at?->toIso8601String(),
+            'finished_at' => $b->finished_at?->toIso8601String(),
+            'created_at' => $b->created_at?->toIso8601String(),
+        ];
+    }
+}