OpenAI built a 99.9% accurate ChatGPT text detector back in 2023. Then a customer survey found almost 30% of users would use ChatGPT less if it ever shipped. So the finished tool sat in a drawer for three years. Today it shipped, and the only thing that changed is the law. The EU AI Act now requires AI-generated text to be machine-readable as AI, with fines up to 3% of global revenue for providers who skip it. Look at how it shipped, because every detail follows from that 30% number. The…