An exclusive early look at Apple’s new touchscreen MacBook Pro—the computer Apple said would never happen.Photo-Illustration: Jobanny Cabrera; Getty ImagesIt’s a bright day in Cupertino. Apple’s new CEO strolls to an outdoor seating area within the company’s otherworldly ring-shaped headquarters and pulls up a chair. An employee notes the angle and asks if he minds the sun. John Ternus doesn’t mind at all.Nearly two months into his tenure, he’s been busy. While the tech world buzzes about AI age...