EasyPay popup mode relies on notify_url (webhook) to update order status,
but if the callback is missed, orders stay PENDING forever. This adds:
- POST /api/v1/payment/orders/verify endpoint that actively queries
the upstream provider to check payment status
- Frontend PaymentResultView calls verify when receiving EasyPay
return_url params (out_trade_no)
- Fix checkPaid to fall back to OutTradeNo when PaymentTradeNo is empty
(popup mode doesn't have trade_no until the notify callback)
erio
03b97f14ad