guke
e11f506e1e
docs: 提现允许在途时继续提交申请 设计spec (#173)
## 摘要
取消「同一用户同时仅一笔在途提现」限制:已有 reviewing/pending 提现单时可继续发起新申请。
- 删应用层在途单检查(WithdrawTooFrequentError)+ 删 DB 分区唯一索引 ux_withdraw_order_user_active(含迁移)
- 清理失效死代码;IntegrityError 兜底瘦身为仅处理 out_bill_no 幂等
- 既有约束不变:建单先扣款(防超提)、coin_cash 每日档位次数、out_bill_no 幂等、解绑退款、admin 审核/对账均按单号维度
## 测试
- 新增:多笔在途并存放行(coin_cash & invite_cash)、第二笔仅受余额约束(409 现金余额不足)
- 迁移 upgrade→downgrade→upgrade 回环验证
- 提现域全绿(test_withdraw / test_invite_cash_withdraw / test_withdraw_ledger_check)
## 注意
- 客户端:每次提交需生成新的 out_bill_no;未开免确认时多笔 pending 各返回一个微信确认页,App 需能处理多笔待确认
- 无并发硬上限(产品拍板):coin_cash 由每日档位次数天然封顶,invite_cash 仅受余额约束
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Co-authored-by: guke <guke@autohome.com.cn>
Reviewed-on: #173
2026-07-24 16:40:57 +08:00
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