feat: 添加新的错误码以支持投注功能，更新数据库填充器以增强玩法和赔率配置，扩展 API 路由以支持风险池管理

app/Models/TicketOrder.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+/** 下注订单头 {@see ticket_orders} */
+class TicketOrder extends Model
+{
+    protected $fillable = [
+        'order_no',
+        'player_id',
+        'draw_id',
+        'currency_code',
+        'total_bet_amount',
+        'total_rebate_amount',
+        'total_actual_deduct',
+        'total_estimated_payout',
+        'status',
+        'submit_source',
+        'client_trace_id',
+    ];
+
+    protected function casts(): array
+    {
+        return [
+            'player_id' => 'integer',
+            'draw_id' => 'integer',
+            'total_bet_amount' => 'integer',
+            'total_rebate_amount' => 'integer',
+            'total_actual_deduct' => 'integer',
+            'total_estimated_payout' => 'integer',
+        ];
+    }
+
+    public function player(): BelongsTo
+    {
+        return $this->belongsTo(Player::class);
+    }
+
+    public function draw(): BelongsTo
+    {
+        return $this->belongsTo(Draw::class);
+    }
+
+    public function items(): HasMany
+    {
+        return $this->hasMany(TicketItem::class, 'order_id');
+    }
+}