You already run coding agents (opencode, Codex, Claude Code) in tmux on some remote box: a dev server, a cloud instance, a GPU node. They work. The problem is you : you're chained to a terminal to drive them. Start a task, wait, answer the agent's mid-run question, read the result. If you step away from the desk, the agent stalls on its next question until you SSH back in. From my phone, I wanted to dispatch and supervise that work without opening a terminal: kick off a task from a coffee queue,