Extend the clamshell gate to /etc/pam.d/sudo, not just polkit-1. When the
lid is shut the reader is unreachable, so a terminal sudo would block on
"Place your finger" until pam_fprintd timed out before letting you type the
password. The same pam_exec gate (success=1 skips fingerprint when the lid
is closed) now runs ahead of pam_fprintd in the sudo stack as well.
setup and removal share one gate definition across sudo and polkit; the
migration now gates both stacks on existing installs.
Resolves the clamshell case in #856 and supersedes #6003.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
