---
- name: "🔍 Stat compose instance dir for '{{ application_id }}'"
  ansible.builtin.stat:
    path: "{{ lookup('container', application_id, 'directories.instance') }}"
  register: sys_svc_compose_instance_dir
  changed_when: false
  delegate_to: "{{ STACK_HOST }}"

- name: "🛑 Fail: instance dir missing at handler flush for '{{ application_id }}'"
  ansible.builtin.fail:
    msg: >-
      Compose handlers flushed for '{{ application_id }}' but
      '{{ lookup('container', application_id, 'directories.instance') }}' does not exist.
      A handler notification drifted into a foreign application context: some role switched
      application_id (e.g. rendered another app's frontend) between the notify and this flush.
      Fix the notifying role: flush handlers while the notifying app is still bound, before
      entering the foreign context.
  when: not (sys_svc_compose_instance_dir.stat.exists | default(false))