CI now runs a headless QEMU boot test after the smoke test: - Boots ISO with -nographic, captures serial output - Watches for "Press Enter to start installation" (pass) - Detects kernel panic or initramfs shell (fail) - 120 second timeout, runs as continue-on-error Also: updated iso-debug reference with embedded vs appended EFI findings from real hardware testing. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>