Update kiosk to use weston

files/kiosk/kiosk.service

@@ -1,6 +1,6 @@
 [Unit]
-Description=Wayland kiosk (cage + Chromium)
-Documentation=https://github.com/cage-kiosk/cage
+Description=Wayland kiosk (weston kiosk-shell + Chromium)
+Documentation=man:weston(1) man:weston.ini(5)
 # Take over tty1 from the login getty and start after the network is up (the
 # kiosk loads a URL). plymouth-quit lets the splash hand off cleanly.
 After=systemd-user-sessions.service plymouth-quit-wait.service getty@tty1.service network-online.target
@@ -24,8 +24,12 @@ StandardError=journal
 UtmpIdentifier=tty1
 UtmpMode=user
 EnvironmentFile=/etc/kiosk/kiosk.env
-# cage -s: single-client kiosk compositor; runs the wrapper, exits when it does.
-ExecStart=/usr/bin/cage -s -- /usr/local/bin/kiosk-session
+# weston with kiosk-shell (every app fullscreen). --use-pixman = software
+# rendering for VMs/no-GPU. weston.ini's [autolaunch] runs /usr/local/bin/
+# kiosk-session (Chromium) and, with watch=true, weston exits if it dies — so
+# Restart=always relaunches the whole stack. cage (the original choice) isn't
+# packaged for EL9; weston kiosk-shell is the minimal EL9-available equivalent.
+ExecStart=/usr/bin/weston --use-pixman --config=/etc/xdg/weston/weston.ini
 Restart=always
 RestartSec=2