- add nixos-images input; nixosConfigurations.kexec bakes in the ssh login key
- build via config.system.build.kexecInstallerTarball
- deploy: ./deploy kexec <host> streams the installer to /tmp and kexecs
- works around ZimaOS RO root where nixos-anywhere ssh-copy-id fails
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>