-- 扩展企业微信审批场景业务类型白名单，纳入分销注册、提现资格与提现终审三个场景。
-- 既有的退款、线下代充值、员工代收款核销三个场景语义不变。

ALTER TABLE tb_wecom_approval_scene
    DROP CONSTRAINT IF EXISTS chk_wecom_approval_scene_business;

ALTER TABLE tb_wecom_approval_scene
    ADD CONSTRAINT chk_wecom_approval_scene_business
    CHECK (business_type IN (
        'refund_approval',
        'offline_recharge_approval',
        'employee_collection_approval',
        'agent_distribution_approval',
        'withdrawal_qualification_approval',
        'commission_withdrawal_approval'
    ));