feat: 增强开奖列表统计功能

- 在 AdminDrawIndexController 中新增 aggregateListStats 方法，聚合每个开奖的投注和派彩金额，计算盈亏情况。
- 更新 row 方法，使用聚合统计数据替代原有的直接查询，提升性能与可读性。
- 通过优化数据处理逻辑，确保在获取开奖列表时能够同时返回相关的统计信息。

database/migrations/2026_05_31_100000_add_query_performance_indexes.php

@@ -0,0 +1,53 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+/**
+ * 对齐高频查询路径（PostgreSQL B-tree）。
+ *
+ * - ticket_orders：按 draw_id 结算/后台汇总
+ * - wallet_txns / ticket_items：player_id + ORDER BY id DESC 分页
+ * - draws：business_date 筛选 + draw_time 排序（往期/报表）
+ */
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('ticket_orders', function (Blueprint $table): void {
+            $table->index('draw_id', 'idx_ticket_orders_draw_id');
+        });
+
+        Schema::table('wallet_txns', function (Blueprint $table): void {
+            $table->index(['player_id', 'id'], 'idx_wallet_txns_player_id');
+        });
+
+        Schema::table('ticket_items', function (Blueprint $table): void {
+            $table->index(['player_id', 'id'], 'idx_ticket_items_player_id');
+        });
+
+        Schema::table('draws', function (Blueprint $table): void {
+            $table->index(['business_date', 'draw_time'], 'idx_draws_business_date_draw_time');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('draws', function (Blueprint $table): void {
+            $table->dropIndex('idx_draws_business_date_draw_time');
+        });
+
+        Schema::table('ticket_items', function (Blueprint $table): void {
+            $table->dropIndex('idx_ticket_items_player_id');
+        });
+
+        Schema::table('wallet_txns', function (Blueprint $table): void {
+            $table->dropIndex('idx_wallet_txns_player_id');
+        });
+
+        Schema::table('ticket_orders', function (Blueprint $table): void {
+            $table->dropIndex('idx_ticket_orders_draw_id');
+        });
+    }
+};