fix(lint): convert sshd restart to handler, add pipefail to btrfs subvol set

roles/environment/tasks/_detect_live.yml

@@ -77,13 +77,10 @@
       MaxStartups 50:30:100
       ClientAliveInterval 30
       ClientAliveCountMax 10
-  register: _sshd_config_result
+  notify: Restart sshd
 
-- name: Restart sshd immediately if config was changed
-  when: _sshd_config_result is changed
-  ansible.builtin.service:
-    name: sshd
-    state: restarted
+- name: Apply pending sshd restart before continuing
+  ansible.builtin.meta: flush_handlers
 
 - name: Abort if the host is not booted from the Arch install media
   when: