[OS] I keep finding the same critical bug in AI-built apps. So I built a Claude Code skill that catches it before you ship.

I do web dev and SEO for a living, and I actively push clients to build with AI, Claude included. The catch is what lands in my inbox lately. Half of it is the same email: "I built this in Lovable/Bolt/Cursor, it works, can you make it real before I show it to people?" So I open the code, and it is almost always the same story. The app looks finished. It is also one changed URL away from leaking every user's data, and nobody would find out because nothing is being tracked. The number one thing I find is a S