The update, pushed through automatically at 3:17 a.m., had erased every visible identifier of its predecessor. No logs, no error messages—just a sleek, unnerving interface labeled Plus 5.2 . But Alex noticed something odd: embedded in the backend, a string of numbers kept recurring: 407-1123-5.2. It was their late sister Clara’s birthday—April 7th—followed by her final project number at the company where they had both worked. She’d died in a car crash two years prior, her work on an experimental AI prototype abandoned in her wake.