Until recently, AI agents mostly handled short tasks, like one support call or one email. Now they can stay on a job for weeks or months. That matters for "relay race" work that runs through a long chain of people. Every handoff in that chain is a chance for something to fall through: a slow callback, a dropped follow-up, lost context. Take a personal injury case. Today it moves from intake to investigation to the demand letter, with different people at each step. A single case agent can…