Skill

race-condition

竞态条件 / TOCTOU 深度测试。覆盖优惠券加倍使用、库存超卖、支付金额篡改、提现并发、邀请码无限复用、签到积分翻倍、文件上传竞态、密码重置TOCTOU、状态流转竞态。含 Go/Python 并发脚本模板，按场景分类（支付/库存/优惠券/注册）。

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