Fixed

• A cycle in the server's folder data can no longer hang pcli2 - Every walk over the folder hierarchy (path building, folder list --format tree, subtree filtering) now remembers where it has been, so a folder whose parent chain loops back on itself (or lists itself as its parent) ends the walk with a warning instead of looping forever or overflowing the stack. The "did you mean" suggestions build the path of every folder, so one bad record used to hang every not-found message.