Good framing. The transport mismatch is real and already causing pain in production. One thing worth adding: the security surface expands significantly when agents go async. When an agent is synchronous, a human is implicitly in the loop on every action. When it's running in the background on a cron or webhook, there's no one watching. The agent can take hundreds of actions before anyone notices something went wrong. The transport problem you're describing is urgent. The governance problem that comes with async agents is equally urgent and almost nobody is talking about it yet.