{ pkgs, inputs, config, keys, ... }: {
  users.users.ai-worker = {
    isSystemUser = true;
    group = "ai-worker";
    home = "/home/ai-worker";
    createHome = true;
    extraGroups = [ "docker" ];
    shell = pkgs.bashInteractive;
    openssh.authorizedKeys.keys = [
      keys.users.ai-worker.main
    ];
  };
  users.groups.ai-worker = {};
  
  # Restricted sudo for ai-worker - security checks and deployment only
  security.sudo.extraRules = [
    {
      users = [ "ai-worker" ];
      commands = [
        {
          command = "/run/current-system/sw/bin/nh os switch --flake /home/ai-worker/infra#lazyworkhorse";
          options = [ "NOPASSWD" ];
        }
        {
          command = "/run/current-system/sw/bin/nixos-rebuild switch --flake /home/ai-worker/infra#lazyworkhorse";
          options = [ "NOPASSWD" ];
        }
        # Security audit commands
        {
          command = "/run/wrappers/bin/sudo iptables -L -n -v";
          options = [ "NOPASSWD" ];
        }
        {
          command = "/run/wrappers/bin/sudo iptables -S";
          options = [ "NOPASSWD" ];
        }
        {
          command = "/run/current-system/sw/bin/fail2ban-client status";
          options = [ "NOPASSWD" ];
        }
        {
          command = "/run/current-system/sw/bin/fail2ban-client status *";
          options = [ "NOPASSWD" ];
        }
        {
          command = "/run/current-system/sw/bin/fail2ban-client get * banned";
          options = [ "NOPASSWD" ];
        }
        {
          command = "/run/current-system/sw/bin/journalctl -t kernel -n 100";
          options = [ "NOPASSWD" ];
        }
        {
          command = "/run/current-system/sw/bin/journalctl -u fail2ban -n 50";
          options = [ "NOPASSWD" ];
        }
        {
          command = "/run/current-system/sw/bin/sshd -T";
          options = [ "NOPASSWD" ];
        }
        # Docker commands for service checks
        {
          command = "/run/current-system/sw/bin/docker ps";
          options = [ "NOPASSWD" ];
        }
        {
          command = "/run/current-system/sw/bin/docker inspect *";
          options = [ "NOPASSWD" ];
        }
        # Network diagnostics
        {
          command = "/run/current-system/sw/bin/ss -tlnp";
          options = [ "NOPASSWD" ];
        }
        {
          command = "/run/current-system/sw/bin/cat /proc/net/tcp";
          options = [ "NOPASSWD" ];
        }
      ];
    }
  ];
}