fix(cob): announce refs in the local node namespace

src/cob.rs

@@ -276,7 +276,8 @@ fn announce(profile: &Profile, repo_id: RepoId, announce: bool) -> Result<(), Jo
             unsynced,
         ))
         .map_err(|_| JobError::Announcer)?;
-        node.announce(repo_id, [], TIMEOUT, announcer, |_, _| ())
+        let namespace = node.nid().map_err(JobError::announce)?;
+        node.announce(repo_id, [namespace], TIMEOUT, announcer, |_, _| ())
             .map_err(JobError::announce)?;
     }