Your AI system makes thousands of decisions per day. It screens candidates, scores credit applications, flags anomalies, or suggests diagnoses. Now imagine a regulator asks you to reconstruct a single decision from six months ago — the inputs, the logic, the output, and who reviewed it. Can you? That is what Article 12 of the EU AI Act demands. And unlike Article 11, which requires documentation on paper, Article 12 is a technical construction requirement. Your system itself