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/Ticket/TicketItemShowController.php

@@ -0,0 +1,89 @@
+<?php
+
+namespace App\Http\Controllers\Api\V1\Ticket;
+
+use App\Http\Controllers\Controller;
+use App\Lottery\ErrorCode;
+use App\Models\Player;
+use App\Models\TicketItem;
+use App\Services\Draw\DrawResultViewService;
+use App\Support\ApiResponse;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+
+/**
+ * `GET /api/v1/ticket/items/{ticket_no}` — 注单详情（单注项 + 组合 + 结算摘要）。
+ */
+class TicketItemShowController extends Controller
+{
+    public function __construct(
+        private readonly DrawResultViewService $drawResultView,
+    ) {}
+
+    public function __invoke(Request $request, string $ticket_no): JsonResponse
+    {
+        /** @var Player $player */
+        $player = $request->attributes->get('lottery_player');
+        $ticket_no = trim($ticket_no);
+
+        $item = TicketItem::query()
+            ->where('ticket_no', $ticket_no)
+            ->where('player_id', $player->id)
+            ->with([
+                'combinations',
+                'draw',
+                'order',
+                'latestSettlementDetail',
+            ])
+            ->first();
+
+        if ($item === null) {
+            return ApiResponse::error(
+                trans('api.not_found', [], $request->lotteryLocale()),
+                ErrorCode::NotFound->value,
+                null,
+                404,
+            );
+        }
+
+        $draw = $item->draw;
+        $published = $draw !== null && in_array($draw->status, DrawResultViewService::publishedDrawStatuses(), true);
+        $drawPayload = $published && $draw !== null ? $this->drawResultView->summarizeDraw($draw) : null;
+
+        $detail = $item->latestSettlementDetail;
+
+        return ApiResponse::success([
+            'ticket_no' => $item->ticket_no,
+            'order_no' => $item->order?->order_no,
+            'draw_no' => $draw?->draw_no,
+            'currency_code' => $item->order?->currency_code,
+            'play_code' => $item->play_code,
+            'dimension' => $item->dimension,
+            'digit_slot' => $item->digit_slot,
+            'original_number' => $item->original_number,
+            'normalized_number' => $item->normalized_number,
+            'unit_bet_amount' => (int) $item->unit_bet_amount,
+            'total_bet_amount' => (int) $item->total_bet_amount,
+            'rebate_rate_snapshot' => (string) $item->rebate_rate_snapshot,
+            'actual_deduct_amount' => (int) $item->actual_deduct_amount,
+            'status' => $item->status,
+            'win_amount' => (int) $item->win_amount,
+            'jackpot_win_amount' => (int) $item->jackpot_win_amount,
+            'settled_at' => $item->settled_at?->toIso8601String(),
+            'placed_at' => $item->order?->created_at?->toIso8601String(),
+            'odds_snapshot_json' => $item->odds_snapshot_json,
+            'combinations' => $item->combinations->map(fn ($c) => [
+                'combination_no' => (int) $c->combination_no,
+                'number_4d' => (string) $c->number_4d,
+                'bet_amount' => (int) $c->bet_amount,
+                'estimated_payout' => (int) $c->estimated_payout,
+            ])->values()->all(),
+            'settlement' => $detail === null ? null : [
+                'matched_prize_tier' => $detail->matched_prize_tier,
+                'win_amount_minor' => (int) $detail->win_amount,
+                'jackpot_allocation_minor' => (int) $detail->jackpot_allocation_amount,
+            ],
+            'published_draw_results' => $drawPayload,
+        ]);
+    }
+}