AI-powered software development flow: Lessons from shipping My Yarn Stash

When I started building My Yarn Stash , I wasn’t trying to prove AI could build an app for me. I wanted to answer a practical question: What actually changes when you treat AI tools as long-term collaborators across planning, implementation, and design? Not with demos or toy examples, but with a real product that has users, persistent data, billing, authentication, and migrations—all the…