refactor(standardize): fix sudoers lecture syntax, extract ssh config, remove redundant os filters

roles/configuration/tasks/network.yml

@@ -30,7 +30,7 @@
     fail_msg: Failed to detect any network interfaces.
 
 - name: Configure NetworkManager profiles
-  when: os | lower not in ["alpine", "void"]
+  when: os not in ["alpine", "void"]
   block:
     - name: Copy NetworkManager keyfile per interface
       vars:
@@ -47,14 +47,14 @@
         label: "LAN-{{ idx }}"
 
     - name: Fix Ubuntu unmanaged devices
-      when: os | lower in ["ubuntu", "ubuntu-lts"]
+      when: os in ["ubuntu", "ubuntu-lts"]
       ansible.builtin.file:
         path: /mnt/etc/NetworkManager/conf.d/10-globally-managed-devices.conf
         state: touch
         mode: "0644"
 
 - name: Configure Alpine networking
-  when: os | lower == "alpine"
+  when: os == "alpine"
   vars:
     configuration_dns_list: "{{ system_cfg.network.dns.servers | default([]) }}"
   block:
@@ -90,7 +90,7 @@
           {% endfor %}
 
 - name: Configure Void networking
-  when: os | lower == "void"
+  when: os == "void"
   vars:
     configuration_dns_list: "{{ system_cfg.network.dns.servers | default([]) }}"
   block: