Added logic to only consider upgrade failed when it actually failed

roles/arch_update/tasks/repo_upgrade.yaml

@@ -1,5 +1,17 @@
-- name: Full repository upgrade
+---
-  become: true
+- name: Perform full system upgrade
+  become:  true
   community.general.pacman:
     update_cache: true
     upgrade: true
+    extra_args: "--noconfirm"
+  register: arch_upgrade_result
+  #- name: Debug full Arch upgrade output
+  #  ansible.builtin.debug:
+  #    var: arch_upgrade_result
+  failed_when: 
+    - arch_upgrade_result.failed == true
+    # We ignore the failure if it's just 'nothing to do', 
+  #  # but otherwise, we let it fail so you can step in.
+    - "'Nothing to upgrade' not in arch_upgrade_result.msg"
+