Three months of running r2, an agentic AI harness, produced four practical lessons. First, an inbox works better than a task list for agent-driven workflows. The author moved their work queue from Asana into Gmail and built an agent to process threads. Threads sit archived under a processing label while the agent works, and return to the inbox when finished or when the agent needs human input. The agent never permanently archives mail; only the human does. Previously, twenty-four threads sat silently under an error label; now they surface with a one-line reason.