句柄（均读自原始应答字节）
  ch50(平安) 补录单 = 200001070J1226092816253210006
  ch37(建行) 补录单 = 200001070J1226092816241610001
  真实被扫失败单     = 200001070X3126092816241710003
  已关单的 H5        = 200001070X4326092816241610002

==============================================================================
【1】平安(50)渠道的补录单 —— 查询（第二轮超时，重跑）
==============================================================================
  POST /v3/queryorder         ->  614 B  rc=SUCCESS ec=PAY_IN_PROCESS  验签OK(13)
       msg = 系统异常

【1b】对它退款（先 trade_no 寻址）
  !! 未完成 refund-ch50-tradeno: TimeoutError('The read operation timed out')  ← 量具失效，不是上游回答

==============================================================================
【2】关单：/v3/closeorder 全路径（我方**未实现**这个端点）
==============================================================================
  POST /v3/h5pay              ->  779 B  rc=SUCCESS ec=PAY_SUCCESS  验签OK(13)
       msg = 预支付成功
  新 H5 trade_no = 200001070X4326092816291510011

  POST /v3/closeorder         ->  305 B  rc=SUCCESS ec=PAY_SUCCESS  验签OK(8)
       msg = 关单成功
  POST /v3/closeorder         ->  344 B  rc=SUCCESS ec=PAY_FAIL  验签OK(8)
       msg = 关单失败：该订单交易失败，不支持关单
  POST /v3/queryorder         ->  603 B  rc=SUCCESS ec=PAY_FAIL  验签OK(17)
       msg = 支付失败

  POST /v3/closeorder         ->  199 B  rc=FAIL ec=None  sign=null
       msg = 订单信息不存在！
  POST /v3/closeorder         ->  343 B  rc=SUCCESS ec=PAY_FAIL  验签OK(8)
       msg = 关单失败：该订单交易失败，不支持关单
  POST /v3/closeorder         ->  343 B  rc=SUCCESS ec=PAY_FAIL  验签OK(8)
       msg = 关单失败：该订单交易失败，不支持关单
  POST /v3/closeorder         ->  199 B  rc=FAIL ec=None  sign=null
       msg = 订单信息不存在！

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【3】已关单的 H5 在 queryorder 里是什么样
==============================================================================
  POST /v3/queryorder         ->  602 B  rc=SUCCESS ec=PAY_FAIL  验签OK(17)
       msg = 支付失败

==============================================================================
【4】退款错误路径补齐
==============================================================================
  POST /v3/refundorder        ->  306 B  rc=FAIL ec=None  sign=null
       msg = 订单信息不存在！
  POST /v3/refundorder        ->  306 B  rc=FAIL ec=None  sign=null
       msg = 订单信息不存在！

==============================================================================
【5】撤销：换一笔再试（判「暂不支持撤销」是这一笔的还是普遍的）
==============================================================================
  POST /v3/pay                ->  785 B  rc=SUCCESS ec=PAY_FAIL  验签OK(14)
       msg = 支付失败，获取顾客账户信息失败，请顾客刷新付款码后重新收款，如再次收款失败，请联系管理员处理。[SOUNDWAVE_PARSER_FAIL]
  新被扫单 trade_no = 200001070X3126092816291710012
  POST /v3/cancelorder        ->  214 B  rc=FAIL ec=None  验签OK(2)
       msg = 暂不支持撤销！
  POST /v3/cancelorder        ->  214 B  rc=FAIL ec=None  验签OK(2)
       msg = 暂不支持撤销！

==============================================================================
汇总（16 条）
==============================================================================
tag                          path                   rc/ec                note
q-ch50-bytradeno             /v3/queryorder         SUCCESS/PAY_IN_PROCESS 系统异常; 验签OK(13)
refund-ch50-tradeno          /v3/refundorder        TRANSPORT_ERR        量具失效
h5-for-close                 /v3/h5pay              SUCCESS/PAY_SUCCESS  预支付成功; 验签OK(13)
co-h5-1st                    /v3/closeorder         SUCCESS/PAY_SUCCESS  关单成功; 验签OK(8)
co-h5-2nd-幂等                 /v3/closeorder         SUCCESS/PAY_FAIL     关单失败：该订单交易失败，不支持关单; 验签OK(8)
q-h5-afterclose              /v3/queryorder         SUCCESS/PAY_FAIL     支付失败; 验签OK(17)
co-nokey                     /v3/closeorder         FAIL/None            订单信息不存在！; sign=null
co-barcode                   /v3/closeorder         SUCCESS/PAY_FAIL     关单失败：该订单交易失败，不支持关单; 验签OK(8)
co-oldh5-again               /v3/closeorder         SUCCESS/PAY_FAIL     关单失败：该订单交易失败，不支持关单; 验签OK(8)
co-nonexistent               /v3/closeorder         FAIL/None            订单信息不存在！; sign=null
q-oldh5-closed               /v3/queryorder         SUCCESS/PAY_FAIL     支付失败; 验签OK(17)
refund-barcode-unpaid        /v3/refundorder        FAIL/None            订单信息不存在！; sign=null
refund-bogus-tradeno         /v3/refundorder        FAIL/None            订单信息不存在！; sign=null
barcode-for-cancel           /v3/pay                SUCCESS/PAY_FAIL     支付失败，获取顾客账户信息失败，请顾客刷新付款码后重新收款，如再次收款失败，请联系管理员; 验签OK(14)
cancel-barcode-2nd           /v3/cancelorder        FAIL/None            暂不支持撤销！; 验签OK(2)
cancel-barcode-bytrace       /v3/cancelorder        FAIL/None            暂不支持撤销！; 验签OK(2)