The apply panel serves staged kinds too; notify mode shows the group-join command when
the helper is installed but not yet enabled; outcomes render 'staged — reboot to
finish' and 'your package source had nothing newer yet' distinctly. Docs: the Linux
opt-in section (why it's a group, what the grant bounds, the pacman stance).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>