支付功能对齐网关文档 + 完善管理操作

- GatewayPayService: 新增 remark 字段(传uid/oid), 移除废弃 return_url, 新增 closeOrder/syncOrderStatus
- PaymentController: 新增 POST /payment/gateway/sync/:orderNo 和 /close/:id 端点
- Admin 订单页: 待支付订单增加「同步状态」按钮
- OrdersService: 下单时传入 remark 使 webhook 可匹配
- 清理 PaymentService 未使用依赖
- docs/progress.md 更新支付架构

frontend/src/app/admin/orders/page.tsx

@@ -92,6 +92,27 @@ export default function AdminOrders() {
     }
   }
 
+  async function handleSyncOrder(orderNo: string) {
+    try {
+      const res = await fetch(`${API_BASE}/payment/gateway/sync/${orderNo}`, {
+        method: 'POST',
+        headers: { Authorization: `Bearer ${token}` },
+      });
+      if (res.ok) {
+        const data = await res.json();
+        if (data.updated) {
+          alert('订单状态已同步更新为已支付');
+        } else {
+          alert(`状态同步完成：当前状态 ${data.status}`);
+        }
+        loadOrders();
+      } else {
+        const err = await res.json();
+        alert(err.message || '同步失败');
+      }
+    } catch { alert('同步失败，请重试'); }
+  }
+
   async function handleMarkPaid(orderNo: string) {
     if (!confirm('确认要将此订单标记为已支付吗？')) return;
     try {
@@ -234,9 +255,14 @@ export default function AdminOrders() {
                         </button>
                       )}
                       {order.status === 'PENDING' && (
-                        <button onClick={() => handleMarkPaid(order.orderNo)} className="text-xs text-green-600 hover:text-green-800">
-                          标记已付
-                        </button>
+                        <>
+                          <button onClick={() => handleSyncOrder(order.orderNo)} className="text-xs text-blue-600 hover:text-blue-800">
+                            同步状态
+                          </button>
+                          <button onClick={() => handleMarkPaid(order.orderNo)} className="text-xs text-green-600 hover:text-green-800">
+                            标记已付
+                          </button>
+                        </>
                       )}
                     </div>
                   </td>