You can prompt an agent for three hours and ship a 25,000-line pull request. Nobody on your team can tell you why it works — or why it breaks at 2 AM. The New Workflow It's 2026. You're the senior engineer on a mid-size product team. Your job has always been the person who catches the architecture mistakes before they compound — the one who notices that a Kafka dependency was grafted onto a read-heavy query, or that someone denormalized the database because it was faster than...