I have been writing here about one core idea: AI agents do not only fail because they forget things. They fail when the things they know, the things they are allowed to do, the thing they are for, and the thing they actually do stop agreeing with each other. I have been calling that cross-layer coherence. For a while, that lived in research. Claims. Frozen rules. Pre-registrations. Receipts. Clean boundaries. Then I wanted to take it out of theory. Not another essay. Not another abstract warning