install/post-install/first-run-mode.sh shipped on quattro between 53e26115 and 75cb4f71, and its final body writes `Cmnd_Alias FIRST_RUN_CLEANUP = /usr/bin/rm -f /etc/sudoers.d/first-run, /bin/rm -f /etc/sudoers.d/first-run`. The predicate's case listed only the two `/bin/rm` spellings, so that line fell through to the user-spec test, failed it, and the whole file read as hand-written. The migration then left it alone and wrote its machine marker, which is permanent: on an offline install from that window the account keeps passwordless `/usr/bin/systemctl` for good, and nothing looks at the file again.
Adding the string is the whole fix. The test now carries all nine bodies the installer wrote across both locations rather than the eight from install/preflight.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-Authored-By: Codex XHigh <codex@openai.com>
