DEBIAN_KERNEL_ABI=auto in VERSIONS — build.sh queries apt-cache depends linux-image-amd64 to find the current ABI. lb config now uses linux-image-amd64 meta-package. This prevents build failures when Debian drops old kernel packages from the repo (happens with every point release). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>