Hand a workstream off to a fresh agent session. Use when work is worth doing but does not belong in the current conversation — a design pass, an investigation, an adjacent feature, a follow-up someone else should own. Writes a committed handoff doc, then queues a task chip that starts its own session pointing at it. Triggers on "hand this off", "spin this off", "give me something to hand to a new agent", "queue this for later", "someone should look into X".
