A GUI installer wizard for permanent rpm-ostree package layers on
bootc/image-based systems. Walks through: welcome/current-version check,
package name entry with existence check, confirmation, then a streamed
rpm-ostree install via pkexec. On success, writes a pending-confirmation
marker and installs an autostart entry so the next login shows a
"did this update work?" screen with a one-click rollback (bootc rollback
--apply) if not.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
