Select at least one item to remove
Archive editor shows archiveEditor.selectItemFirst when remove/repack is clicked with nothing selected.
Why this happens
Client guard before the repack confirm. After a valid selection, failures show Repack failed.
Diagnose and fix
1. Select one or more entries in the archive list.
2. Confirm remove-and-repack.
3. See Repack failed if the server rejects the rewrite.
4. See Archive editing / Manage ZIP archives.