-- 回滚套餐记录沉默期字段（会丢失沉默期业务事实，仅限测试环境演练）。
ALTER TABLE tb_package_usage DROP CONSTRAINT IF EXISTS ck_package_usage_silence_status;
ALTER TABLE tb_package_usage
    DROP COLUMN IF EXISTS silence_adjust_pending,
    DROP COLUMN IF EXISTS silence_expired_at,
    DROP COLUMN IF EXISTS silence_free_extension_used,
    DROP COLUMN IF EXISTS silence_extension_count,
    DROP COLUMN IF EXISTS silence_paid_extended_days,
    DROP COLUMN IF EXISTS silence_extended_days,
    DROP COLUMN IF EXISTS silence_deadline_at,
    DROP COLUMN IF EXISTS silence_period_days,
    DROP COLUMN IF EXISTS silence_start_at,
    DROP COLUMN IF EXISTS silence_status;