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Author SHA1 Message Date
zzh
223d32f62a feat: 订单支付时选券,新增支付预览接口并按所选券扣款核销
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- 新增 GET /order/pay-preview:返回会员折/券互斥后的应付拆解与本单可选券
- POST /order/pay 支持 couponInstanceId(null 沿用已绑定券,0 不用券,>0 指定券),按试算应付扣款并核销券、释放被替换券的锁定
- 被当前订单锁定的券视为可用,修复入库/编辑重算营销金额时误报券被占用

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-10-19 14:01:00 +08:00