Ant Group is testing an overhaul to its Alipay super app that would introduce an AI agent interface, a major escalation in its battle for users with archrival WeChat.Hangzhou-based Ant will roll out a design that lets users ask the Alipay AI to book a car ride, order coffee or arrange takeout — by typing or speaking their requests, according to people familiar with its plans and a video demo seen by Bloomberg News. The assistant, pronounced “Ah Bao” in Chinese, will also be able to conduct money-management tasks like buying mutual funds with user authorization, the people said, requesting...