TEMP: route live diag to serial via sudo (revert after)

iso/airootfs/usr/local/bin/bos-live-setup

@@ -41,8 +41,8 @@ if [[ "$(tty)" == /dev/tty1 ]] && [[ -z "$WAYLAND_DISPLAY" ]]; then
     export WLR_NO_HARDWARE_CURSORS=1
     # Log to a user-writable path (/var/log is root-only; redirecting there
     # would fail and silently keep the compositor from ever launching).
-    Hyprland &>/tmp/hyprland-live.log
-    echo "Hyprland exited (rc=$?). Log: /tmp/hyprland-live.log"
+    Hyprland 2>&1 | sudo tee /tmp/hyprland-live.log /dev/ttyS0 >/dev/null
+    echo "Hyprland exited. Log: /tmp/hyprland-live.log" | sudo tee /dev/ttyS0
     exec bash -i
 fi
 EOF