feat(sqmeta): change fstab creation to just echo

feat(sqmeta): firewall

docs: add modes info

feat: disable sshd automatic keygen

feat: modes handling

feat: stable ssh keys

feat(sqmeta): add qemu-guest-agent

feat: root password secret

chore: update makeimg.nix

feat: justfile organization and payload, init, deploy

feat: get-anemos recipe

feat: add mirror.sr.ht to repositories and keys

feat: an approach to common files

fix(sqmeta): only format if custom

chore: update makeimg.nix

feat(sqmeta): init as first host

feat: init