Choose the default boot kernel from the Update menu

dhh authored and merged omacom/omarchy#15966 into the Quattro development branch. With several kernels installed, Update now offers a Kernel menu that changes Limine's default after authentication, rebuilds the selected kernel and offers a reboot notification. The command refuses switches under Direct Boot and attempts to restore the previous boot configuration if switching fails.

The discussion settled a deliberate limitation: hand-edited boot orders beginning with a wildcard can leave the current-kernel checkmark unset. dhh explained that shipped settings and the selection command use exact kernel names; greptile-apps[bot] accepted that tradeoff and withdrew its finding in omacom/omarchy#15966:discussion_r4339204956.