chore: rename .yaml extensions to .yml for consistency

roles/system-setup/tasks/ssh.yml

@@ -0,0 +1,32 @@
+---
+- name: Update SSH configuration for better security
+  become: true
+  template:
+    src: '../templates/sshd_config.j2'
+    dest: '/etc/ssh/sshd_config'
+    owner: root
+    mode: '0600'
+    validate: '/usr/sbin/sshd -t -f %s'
+  notify: Restart sshd daemon
+
+- name: Find all existing SSH host keys
+  find:
+    paths: '/etc/ssh'
+    patterns: "ssh_host_*_key*"
+  register: existing_ssh_host_keys
+  when: regenerate_ssh_host_keys | bool
+
+- name: Delete previous existing SSH host keys
+  become: true
+  file:
+    path: "{{ item.path }}"
+    state: absent
+  loop: "{{ existing_ssh_host_keys.files }}"
+  when: regenerate_ssh_host_keys | bool
+
+- name: Generate new SSH host keys
+  become: true
+  command: ssh-keygen -A
+  changed_when: true
+  when: regenerate_ssh_host_keys | bool
+  notify: Restart sshd daemon