Show HN: I built Sonars in 3 weeks to see if AI coding is useful for my companyI've been programming since I was 11. I'm 38 now.In those 27 years, I've worked on game engines at EA DICE, done rendering research at OTOY and Embark, and now run a graphics R&D company that does work for AMD, Intel, and Meta. I've seen plenty of new tools come and go.When AI coding tools started blowing up, I needed to figure out: is this something my company should invest in, or something we can safely ignore for another few years?I decided to settle it: go all-in for a few weeks. Build something real, outside of our existing codebase, with agentic AI—not just autocomplete, but actually letting Claude Opus write files, run commands, and commit code.3 weeks later, I have my answer.Sonars went from zero to launch in 3 weeks. One developer. Pure agentic AI. And once the core was working, I used Sonars to build Sonars.The problem I kept hitting with other tools: Claude made changes directly in my working directory. One experimental prompt and my branch was a disaster—half-finished featu