refactor(vars): add system/hypervisor dict inputs

roles/global_defaults/tasks/hypervisor.yml

@@ -0,0 +1,42 @@
+---
+- name: Validate hypervisor dict input
+  when: hypervisor is mapping
+  ansible.builtin.assert:
+    that:
+      - hypervisor.type is defined
+      - hypervisor.type | string | length > 0
+    fail_msg: "hypervisor.type is required when hypervisor is a dictionary"
+    quiet: true
+
+- name: Normalize hypervisor configuration
+  vars:
+    hypervisor_input: "{{ hypervisor if hypervisor is mapping else {} }}"
+    hypervisor_type_legacy: "{{ (hypervisor | default('none')) if hypervisor is string else '' }}"
+    hypervisor_legacy_cfg:
+      type: "{{ hypervisor_type_legacy }}"
+      url: "{{ hypervisor_url | default('') }}"
+      username: "{{ hypervisor_username | default('') }}"
+      password: "{{ hypervisor_password | default('') }}"
+      node: "{{ hypervisor_node | default('') }}"
+      storage: "{{ hypervisor_storage | default('') }}"
+      datacenter: "{{ hypervisor_datacenter | default('') }}"
+      cluster: "{{ hypervisor_cluster | default('') }}"
+      validate_certs: "{{ hypervisor_validate_certs | default(false) | bool }}"
+    hypervisor_cfg_effective: >-
+      {{
+        hypervisor_defaults
+        | combine(hypervisor_legacy_cfg, recursive=True)
+        | combine(hypervisor_input, recursive=True)
+      }}
+  ansible.builtin.set_fact:
+    hypervisor_cfg: "{{ hypervisor_cfg_effective }}"
+    hypervisor: "{{ hypervisor_cfg_effective.type | string | lower }}"
+    hypervisor_url: "{{ hypervisor_cfg_effective.url }}"
+    hypervisor_username: "{{ hypervisor_cfg_effective.username }}"
+    hypervisor_password: "{{ hypervisor_cfg_effective.password }}"
+    hypervisor_node: "{{ hypervisor_cfg_effective.node }}"
+    hypervisor_storage: "{{ hypervisor_cfg_effective.storage }}"
+    hypervisor_datacenter: "{{ hypervisor_cfg_effective.datacenter }}"
+    hypervisor_cluster: "{{ hypervisor_cfg_effective.cluster }}"
+    hypervisor_validate_certs: "{{ hypervisor_cfg_effective.validate_certs | bool }}"
+  changed_when: false