union/callback: 微信客服代码 @ 4eae2b6ae3f9d23e9af3db2ccac965de29e5ab16

dxc b7913bc10f first commit		2 anni fa
..
cb_customer.sql	b7913bc10f first commit	2 anni fa
cb_msg.sql	b7913bc10f first commit	2 anni fa
cb_service.sql	b7913bc10f first commit	2 anni fa
cb_servicer.sql	b7913bc10f first commit	2 anni fa
cb_staff.sql	b7913bc10f first commit	2 anni fa