Ali Khokhar's mom found a lump when he was a kid. Doctors dismissed it. It took a year to diagnose her breast cancer. She died three years later. He was 13. Every company he has built since is a follow-up system disguised as an AI startup. Here's what most people miss about stories like his mom's: the failure usually isn't one bad doctor. It's the gap between visits. The numbers on that gap are brutal. In one U.S. health system, fewer than half of patients with a positive colon cancer stool…