pub fn run_kv_v1_single_ring_supervised_until_stop(
spec_path: &Path,
lane_path: PathBuf,
wait: WaitPreset,
stop: Arc<AtomicBool>,
) -> Result<(), String>Expand description
Run a long-lived v1 SingleRing runtime until stop is set.
Supervision policy (v1): if any stage thread exits unexpectedly, request stop and return an error after joining.