Fix kiosk startup: radiantwave binary, drop stale rsync, fix GODEBUG typo

configuration.nix

@@ -102,11 +102,7 @@ in
       export WLR_RENDERER=pixman
       export WLR_NO_HARDWARE_CURSORS=1
 
-      # Asset sync + start app
-      mkdir -p /home/kiosk/.local/share/radiantwave
-      ${pkgs.rsync}/bin/rsync -ru ${radiantApp}/share/radiantwave/ /home/kiosk/.local/share/radiantwave/
-
-      exec dbus-run-session cage -- ${radiantApp}/bin/radiantwave -d -s > /tmp/kiosk.log 2>&1
+      exec dbus-run-session cage -- /run/current-system/sw/bin/radiantwave -d -s > /tmp/kiosk.log 2>&1
     fi
   '';
 
@@ -176,4 +172,4 @@ in
       echo "Rollback completed at $(date)"
     '';
   };
-}
+}