QUEUE row 17, MVP iteration 2. scripts/discord-service.sh renders and
installs mosaic-discord@<binding> from packages/discord/systemd/. The
unit's main process is `run --supervised`, which applies the new recover
policy first: a lock whose owner is gone is cleared and only the STOP
written for that is removed; an operator STOP or a held binding refuses
with exit 3, which RestartPreventExitStatus never retries. `recover` is
also a CLI verb. First cut used ExecStartPre and looped live, since systemd
honours the never-retry status only from the main process; replaced and
re-verified before any message traffic. Suite 40/40, 95 node tests.
Co-Authored-By: Claude Fable 5.1 <[email protected]>