feat: 期权交易后端 — 下单+自动结算+后台管理

app/OptionOrder.php

@@ -0,0 +1,10 @@
+<?php
+namespace App;
+use Illuminate\Database\Eloquent\Model;
+
+class OptionOrder extends Model
+{
+    protected $table = 'option_order';
+    protected $fillable = ['user_id','pair_id','symbol','direction','amount','fee','open_price','close_price','profit_rate','income','delivery_time','status'];
+    public function pair() { return $this->belongsTo(OptionPair::class, 'pair_id'); }
+}