-- Phase-2：预报应收/应付快照（预报→入库差额对比）

ALTER TABLE `t_order`
  ADD COLUMN `ForecastReceivableAmount` DECIMAL(18,4) NULL COMMENT '预报应收快照（创建预报后固化，入库不覆盖）' AFTER `ReceivableSubtotal`,
  ADD COLUMN `ForecastPayableAmount` DECIMAL(18,4) NULL COMMENT '预报应付快照（创建预报后固化，入库不覆盖）' AFTER `ForecastReceivableAmount`;