Release 1.54.0

Anyone building for iPhone knows the dance: the editor on one side, the simulator in a floating window on top of everything, and every context switch buries that window behind something else.

In this release the simulator becomes a canvas panel. Open Simulator (⌘K, "simulator"), pick a device, and it shows up next to the agent writing the code: the live screen, your click turning into a tap, your keyboard typing inside it.

It is the device, not a picture of it

This is not a screenshot of the Xcode window. The panel talks to the simulator engine and gets the same image the official window draws, with the device bezel and the canvas showing around it. iOS gestures work like on the phone: swipe up from the bottom and the app minimizes, pull down from the top and Notification Center appears.

The device stays alive outside the panel. Closing the panel shuts nothing down, and a simulator you had already opened from Xcode shows up here ready to use. When you want the usual window, the menu has Open in Xcode Simulator.

Agents can see what they built

Until now an agent would write the app, install the build, and stop: to know whether the screen came out right, it depended on you looking and telling it. Now it sees the screen and taps it on its own, without going through your mouse. When an agent touches the device, its name appears at the top of the panel, so you know whose hand is moving it.

The simulator ships with Xcode. If Xcode isn't installed, the panel says so instead of going dark.