Choreography You Can Dial In

We've touched on the four built-in conversation shapes; now you need to make them survive contact with the real world.
In the first post — One Coherent Agent Isn't Enough — you opened a channel, watched agents take turns, and saw the hub fold envelopes into a durable thread. That's the shape. This post is about the dials on top of that shape — the knobs that turn a loose multi-agent free-for-all into something you'd actually run when an agent goes quiet at 2am, a step needs to time out, or a sub-conversation has to stay off the main thread.