481b67fb69
mkosi.conf: add ipmitool, ethtool, nvme-cli so the Firmware stage can actually read BMC revisions, NIC firmware versions, and fall back to nvme-cli when sysfs firmware_rev is missing. firmware.go: probeNICFirmware and probeHBAFirmware now return (snapshots, warning) so a missing ethtool/lspci surfaces in the stage log the same way probeBIOS/probeBMC already do. Before, a host without ethtool silently reported "bios=1 nvme_fw=1 microcode=1" with no hint that nic coverage was dropped. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>