IRQ plan + validation matrix: the login-based QEMU proofs (PS/2 + serio,
monotonic timer, IOMMU first-use, USB storage BOT) now run through
local/scripts/qemu-login-expect.py (stdlib python) instead of the host expect
tool. MSI-X (virtio-net) and xHCI interrupt-driven mode were re-confirmed on
the current redbear-mini ISO. Re-confirmation of the login-based legs with the
new harness is pending an uncontended host (parallel QEMU workload kills QEMU
processes and stalls guest boots). Also record the fbcond Performing-handoff
boot freeze observed with -vga std (separate graphics-path issue).
vasilito
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