install: add split system and user targets

install/post-install/first-run-mode.sh

@@ -0,0 +1,19 @@
+# Setup sudo-less access for the privileged first-run system one-shot. The
+# install user's ~/.local/state/omarchy/first-run.mode marker is created by
+# finalize.sh while running as that user.
+install_user="${OMARCHY_INSTALL_USER:-${USER:-}}"
+install_mode_is offline || exit 0
+[[ -n $install_user ]] || exit 0
+
+mkdir -p /etc/sudoers.d
+cat > /etc/sudoers.d/first-run <<EOF
+Cmnd_Alias FIRST_RUN_CLEANUP = /bin/rm -f /etc/sudoers.d/first-run
+Cmnd_Alias SYMLINK_RESOLVED = /usr/bin/ln -sf /run/systemd/resolve/stub-resolv.conf /etc/resolv.conf
+$install_user ALL=(ALL) NOPASSWD: /usr/bin/systemctl
+$install_user ALL=(ALL) NOPASSWD: /usr/bin/ufw
+$install_user ALL=(ALL) NOPASSWD: /usr/bin/ufw-docker
+$install_user ALL=(ALL) NOPASSWD: /usr/bin/gtk-update-icon-cache
+$install_user ALL=(ALL) NOPASSWD: SYMLINK_RESOLVED
+$install_user ALL=(ALL) NOPASSWD: FIRST_RUN_CLEANUP
+EOF
+chmod 440 /etc/sudoers.d/first-run