Doubao upgrades PC control: tasks continue after Mac screen locks

The detail that matters most is the screen-lock persistence: it moves Doubao from a chat assistant that helps while watched to a delegated agent that keeps working unattended, which is a different trust and oversight problem. Precision and speed gains on simulated clicks matter less than that shift. It affects anyone granting screen and input authorization to a desktop agent, and the open question is whether unattended operation after lock becomes a normal expectation for rival assistants or stays a distinguishing feature.