stop_all becomes SystemdLauncher::stop(StopScope): a Mind's two exact units,
or the swarm's mind-self@*.service and mind-persona@*.service globs. Both
holds write first, then stop whatever the write's outcome, with the same four
outcomes. Soul s1 swarm-hold-leaves-live-turn-running: a held swarm brake left
a live Persona turn running with its shell until the turn ended.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>