The processes of the turn loop, started by the host through PhoenixKitAgent.children/0:

• PhoenixKitAgent.Turns.Registry — a running turn's task under its turn_ref (what "Stop" finds it by);
• PhoenixKitAgent.Turns.Monitor — starts, watches and ends the turns;
• PhoenixKitAgent.Turns.TaskSupervisor — the turns' tasks.

:rest_for_one: when the monitor goes down, the running turns go down with it, so no turn ever runs unwatched (past its deadline, or with its locks never released).