proxmox-install.sh + install.sh left operators with no way to
generate the bcrypt hash on the LXC — 'vetting gen-admin-password'
was suggested in the post-install message but the binary has no
subcommands. Cross-build gen-admin-password-linux-amd64 during the
one-liner flow and drop it into /usr/local/bin.
deploy/proxmox-install.sh bootstraps a fresh LXC end-to-end: apt
prereqs, Go toolchain (if missing), git clone, build, then hands off
to deploy/install.sh. README documents the curl|bash invocation.