"Our best week ever was the week OpenAI killed us." That's Jan Oberhauser on the launch of OpenAI's agent builder, which was supposed to end n8n and instead produced one of their fastest growth weeks on record. His explanation for why is more interesting than the flex. When a frontier lab ships something in your category, the category gets talked about. More people learn the problem exists. A fraction of them go looking for the tool that handles it properly. He says they've been declared…