job_queue: finish reparent call-site swap, delete dead sync path

hive-c0re/src/server.rs

@@ -180,19 +180,17 @@ async fn dispatch(req: &HostRequest, coord: Arc<Coordinator>) -> HostResponse {
             }
             HostRequest::SetParent { child, new_parent } => {
                 tracing::info!(%child, ?new_parent, "set_parent");
-                // `reparent_with_notify` wraps `topology::set_parent`
-                // with the three notification messages + the
-                // ContainerView rescan. Idempotent same-parent calls
-                // skip both the messages and the disk write per the
-                // topology fast-path.
-                coord
-                    .reparent_with_notify(
-                        child.as_str(),
-                        new_parent.as_ref().map(hive_types::Ident::as_str),
-                    )
-                    .await
-                    .map_err(anyhow::Error::msg)?;
-                HostResponse::success()
+                // Fire-and-forget, like every other queue-backed op:
+                // submit returns a DAG id immediately, the caller polls
+                // `QueueDag` (`hivectl`'s wait/progress loop) for the
+                // outcome instead of blocking here on the commit.
+                let id = crate::job_queue::submit::reparent(
+                    &coord,
+                    vec![(child.clone(), new_parent.clone())],
+                    crate::job_queue::Source::Manual,
+                    "manual set-parent via hivectl".to_owned(),
+                );
+                HostResponse::queued(vec![id])
             }
             HostRequest::SetResourceLimits {
                 name,