Tencent Holdings’ WeChat is already the undisputed super-app for over a billion people in China, handling everything from splitting dinner bills to hailing taxis. Now, Tencent is embedding an artificial intelligence agent named Xiaowei into the platform, adding a hands-free, automated assistant to its vast digital ecosystem.In its latest earnings results announced on Wednesday, Tencent highlighted Xiaowei for the first time, touting its focus on user privacy and inference efficiency.After...