feat(bootstrap): add desktop environment support with configurable DE, DM, and display target

roles/global_defaults/defaults/main.yml

@@ -135,6 +135,12 @@ system_defaults:
       user: "_aur_builder"
     chroot:
       tool: "arch-chroot" # arch-chroot|chroot|systemd-nspawn
+    initramfs:
+      generator: "" # auto-detected; override: dracut|mkinitcpio|initramfs-tools
+    desktop:
+      enabled: false
+      environment: ""       # gnome|kde|xfce|sway|hyprland|cinnamon|mate|lxqt|budgie
+      display_manager: ""   # auto from environment when empty; override: gdm|sddm|lightdm|greetd
 
 # Per-hypervisor required fields — drives data-driven validation.
 # All virtual types additionally require network bridge or interfaces.

roles/global_defaults/tasks/_normalize_system.yml

@@ -144,27 +144,13 @@
           url: "{{ system_raw.features.rhel_repo.url | default('') | string }}"
         chroot:
           tool: "{{ system_raw.features.chroot.tool | string }}"
+        initramfs:
+          generator: "{{ system_raw.features.initramfs.generator | default('') | string | lower }}"
+        desktop:
+          enabled: "{{ system_raw.features.desktop.enabled | bool }}"
+          environment: "{{ system_raw.features.desktop.environment | default('') | string | lower }}"
+          display_manager: "{{ system_raw.features.desktop.display_manager | default('') | string | lower }}"
     hostname: "{{ system_name }}"
     os: "{{ system_os_input if system_os_input | length > 0 else (physical_default_os if system_type == 'physical' else '') }}"
     os_version: "{{ system_raw.version | default('') | string }}"
   no_log: true
-
-- name: Populate primary network fields from first interface
-  when:
-    - system_cfg.network.interfaces | length > 0
-    - system_cfg.network.bridge | default('') | string | length == 0
-  vars:
-    _primary: "{{ system_cfg.network.interfaces[0] }}"
-  ansible.builtin.set_fact:
-    system_cfg: >-
-      {{
-        system_cfg | combine({
-          'network': system_cfg.network | combine({
-            'bridge': _primary.bridge | default(''),
-            'vlan': _primary.vlan | default(''),
-            'ip': _primary.ip | default(''),
-            'prefix': _primary.prefix | default(''),
-            'gateway': _primary.gateway | default('')
-          })
-        }, recursive=True)
-      }}