The smoketest VMs start with -vga virtio, but Arch packages that display apart from qemu-base, so the base image build failed with "Virtio VGA not available". update.sh now installs qemu-hw-display-virtio-vga, and doctor and smoketest run check QEMU has the display before anything downloads. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>