组队接口一律校验 X-Club-Id=订单=帖;不走跨店互通。分账 biz_id 按队员区分。 Co-authored-by: Cursor <cursoragent@cursor.com>
新增 Team 表与接口;进8强制锁、组队分账优先且失败不回退全额队长。 Co-authored-by: Cursor <cursoragent@cursor.com>