Adds libvirtd + virt-manager + OVMFFull (UEFI w/ Secure Boot) + swtpm
(software TPM 2.0) so a Windows 11 VM can install. Brings in virtio-win
ISO for guest drivers and virt-viewer for SPICE console. Adds fred to
the libvirtd group.
Reason: the Dungeon Runners client-side mod (DSOUND.dll inline-hook
trampolines + memory scanner) crashes wine with a guard-page violation
on init regardless of Proton vintage; the only realistic path for
character progression is to run the client on real Windows.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
