新增订单推荐人和邀请码功能，优化支付流程中的订单插入逻辑，确保订单记录准确。更新小程序支付请求，支持传递邀请码以便于分销归属和对账。同时，调整数据库结构以支持新字段，提升系统的稳定性和用户体验。

app/api/payment/status/[orderSn]/route.ts

@@ -1,11 +1,11 @@
 /**
  * 查询订单支付状态 API
- * 基于 Universal_Payment_Module v4.0 设计
- * 
  * GET /api/payment/status/{orderSn}
+ * 从数据库 orders 表查询真实订单状态
  */
 
 import { type NextRequest, NextResponse } from "next/server"
+import { query } from "@/lib/db"
 
 export async function GET(
   request: NextRequest,
@@ -21,23 +21,49 @@ export async function GET(
       )
     }
 
-    // TODO: 从数据库查询订单状态
-    // const order = await OrderService.getByOrderSn(orderSn)
-    
-    // 模拟返回数据（开发测试用）
-    const mockOrder = {
-      orderSn,
-      status: "created", // created | paying | paid | closed | refunded
-      paidAmount: null,
-      paidAt: null,
-      paymentMethod: null,
-      tradeSn: null,
+    const rows = await query(
+      "SELECT order_sn, status, amount, pay_time, transaction_id, product_type FROM orders WHERE order_sn = ?",
+      [orderSn]
+    ) as any[]
+
+    if (!rows || rows.length === 0) {
+      return NextResponse.json({
+        code: 200,
+        message: "success",
+        data: {
+          orderSn,
+          status: "created",
+          paidAmount: null,
+          paidAt: null,
+          paymentMethod: null,
+          tradeSn: null,
+        },
+      })
     }
 
+    const order = rows[0]
+    const statusMap: Record<string, string> = {
+      created: "created",
+      pending: "paying",
+      paid: "paid",
+      cancelled: "closed",
+      refunded: "refunded",
+      expired: "closed",
+    }
+    const frontStatus = statusMap[order.status] || order.status
+
     return NextResponse.json({
       code: 200,
       message: "success",
-      data: mockOrder,
+      data: {
+        orderSn: order.order_sn,
+        status: frontStatus,
+        paidAmount: order.status === "paid" ? Number(order.amount) : null,
+        paidAt: order.pay_time || null,
+        paymentMethod: "wechat",
+        tradeSn: order.transaction_id || null,
+        productType: order.product_type,
+      },
     })
   } catch (error) {
     console.error("[Payment] Query status error:", error)