The port additions caused the new VMI to stick at phase=Scheduled with
reason=GuestNotRunning. The guest-console-log sidecar exited 1 and
qemu never started. Reverting to the working 9-day-stable shape until
the port-add path is verified in a non-production VM.
Phase 2 (Windows runner install + registration) needs an operator-
interactive virtctl-vnc session against the rebuilt VM, OR a separate
investigation of why this port-add tipped over the VM.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>