The profile rename changed the file's name, header and limits but not
the device's 'network:' field; the claudenet→boxnet sed covered
host/*.sh only. On a wiped host (no claudenet to silently latch onto)
'incus profile edit box-net' refused the YAML and setup died — run 14's
first catch, before a single box was minted. The sweep this fix rode in
on found exactly one other stale reference, in the same file's comment.