fn sweep_browser_seats(workspace: &Arc<Workspace>)Expand description
Tell the browser fleet which seats remain: the seat is down, so its tabs go with it, except any a parked hand-off holds. The sweep runs off the teardown path, which is reaping a child and can take minutes; a fleet that is not installed is a workspace with no browsers to sweep. The snapshot carries its capture generation, so the fleet drops a sweep that arrives after a newer capture.