Interesting write up, the trick to diff renders to have agents check for regression during optimization is clever. The whole thing VERY much scans as an ad to me though. I like company tech demos but I'm not huge on reading to the end of a post talking about how awesome anthropic's walled garden is to read that he's an employee.

Also, the actual website fully crashed Firefox on my phone after making it play horrible grinding sounds over my headphones for like 30 seconds. That's a new one, even for heavy vibe code.