feat: add placeholder files for common host settings

- Add hosts/default.nix: common settings for all hosts
- Add hosts/servers/default.nix: common settings for all servers
- Add hosts/workstations/default.nix: common settings for all workstations
- Created for production, dev, and stage environments

These files are placeholders for now. Later, common settings can be moved
here to reduce duplication across host configurations.

nixos-infra/environments/dev/hosts/default.nix

@@ -0,0 +1,14 @@
+{ config, pkgs, lib, ... }:
+
+{
+  # Common settings for all hosts in the dev environment
+  # This file is imported by all host configurations (servers and workstations)
+
+  # TODO: Move common settings here later
+  # Examples:
+  # - Common users/groups
+  # - Common packages
+  # - Common services
+  # - Common security policies
+  # - Common monitoring/alerting
+}

nixos-infra/environments/dev/hosts/servers/default.nix

@@ -0,0 +1,15 @@
+{ config, pkgs, lib, ... }:
+
+{
+  # Common settings for all servers in the dev environment
+  # This file is imported by all server configurations
+
+  # TODO: Move common server settings here later
+  # Examples:
+  # - Server-specific users/groups
+  # - Server-specific packages
+  # - Server-specific services
+  # - Server-specific security policies
+  # - Server-specific monitoring/alerting
+  # - Locale: en_US.UTF-8 (for servers)
+}

nixos-infra/environments/dev/hosts/workstations/default.nix

@@ -0,0 +1,15 @@
+{ config, pkgs, lib, ... }:
+
+{
+  # Common settings for all workstations in the dev environment
+  # This file is imported by all workstation configurations
+
+  # TODO: Move common workstation settings here later
+  # Examples:
+  # - Workstation-specific users/groups
+  # - Workstation-specific packages
+  # - Workstation-specific services
+  # - Workstation-specific security policies
+  # - Workstation-specific monitoring/alerting
+  # - Locale: fr_FR.UTF-8 (for workstations)
+}

nixos-infra/environments/production/hosts/default.nix

@@ -0,0 +1,14 @@
+{ config, pkgs, lib, ... }:
+
+{
+  # Common settings for all hosts in the production environment
+  # This file is imported by all host configurations (servers and workstations)
+
+  # TODO: Move common settings here later
+  # Examples:
+  # - Common users/groups
+  # - Common packages
+  # - Common services
+  # - Common security policies
+  # - Common monitoring/alerting
+}

nixos-infra/environments/production/hosts/servers/default.nix

@@ -0,0 +1,15 @@
+{ config, pkgs, lib, ... }:
+
+{
+  # Common settings for all servers in the production environment
+  # This file is imported by all server configurations
+
+  # TODO: Move common server settings here later
+  # Examples:
+  # - Server-specific users/groups
+  # - Server-specific packages
+  # - Server-specific services
+  # - Server-specific security policies
+  # - Server-specific monitoring/alerting
+  # - Locale: en_US.UTF-8 (for servers)
+}

nixos-infra/environments/production/hosts/workstations/default.nix

@@ -0,0 +1,15 @@
+{ config, pkgs, lib, ... }:
+
+{
+  # Common settings for all workstations in the production environment
+  # This file is imported by all workstation configurations
+
+  # TODO: Move common workstation settings here later
+  # Examples:
+  # - Workstation-specific users/groups
+  # - Workstation-specific packages
+  # - Workstation-specific services
+  # - Workstation-specific security policies
+  # - Workstation-specific monitoring/alerting
+  # - Locale: fr_FR.UTF-8 (for workstations)
+}

nixos-infra/environments/stage/hosts/default.nix

@@ -0,0 +1,14 @@
+{ config, pkgs, lib, ... }:
+
+{
+  # Common settings for all hosts in the stage environment
+  # This file is imported by all host configurations (servers and workstations)
+
+  # TODO: Move common settings here later
+  # Examples:
+  # - Common users/groups
+  # - Common packages
+  # - Common services
+  # - Common security policies
+  # - Common monitoring/alerting
+}

nixos-infra/environments/stage/hosts/servers/default.nix

@@ -0,0 +1,15 @@
+{ config, pkgs, lib, ... }:
+
+{
+  # Common settings for all servers in the stage environment
+  # This file is imported by all server configurations
+
+  # TODO: Move common server settings here later
+  # Examples:
+  # - Server-specific users/groups
+  # - Server-specific packages
+  # - Server-specific services
+  # - Server-specific security policies
+  # - Server-specific monitoring/alerting
+  # - Locale: en_US.UTF-8 (for servers)
+}

nixos-infra/environments/stage/hosts/workstations/default.nix

@@ -0,0 +1,15 @@
+{ config, pkgs, lib, ... }:
+
+{
+  # Common settings for all workstations in the stage environment
+  # This file is imported by all workstation configurations
+
+  # TODO: Move common workstation settings here later
+  # Examples:
+  # - Workstation-specific users/groups
+  # - Workstation-specific packages
+  # - Workstation-specific services
+  # - Workstation-specific security policies
+  # - Workstation-specific monitoring/alerting
+  # - Locale: fr_FR.UTF-8 (for workstations)
+}