ALTER TABLE user_invites ADD COLUMN is_effective TINYINT(1) NOT NULL DEFAULT 0 COMMENT '是否为有效邀请';
ALTER TABLE user_invites ADD COLUMN accumulated_amount BIGINT NOT NULL DEFAULT 0 COMMENT '被邀请人累计消费金额(分)';
ALTER TABLE task_center_task_tiers ADD COLUMN extra_params JSON COMMENT '额外参数配置(如消费门槛)';
ALTER TABLE task_center_user_progress ADD COLUMN effective_invite_count BIGINT NOT NULL DEFAULT 0 COMMENT '有效邀请人数';