解冻接口返回 unfreeze_result,便于后台核对池→余额是否真正写回。 Co-authored-by: Cursor <cursoragent@cursor.com>
新增公共/用户冻结配置、流水表与后台解冻接口;修复冻结与扣款重复扣余额问题。 Co-authored-by: Cursor <cursoragent@cursor.com>