Style newsletters and system e-mails like www.eom.dev

Catppuccin Mocha campaign template (default) and archive variant, kept
in sync in the database; system e-mail header/footer overridden via
--static-dir from a ConfigMap. PNG logo for mail clients. Tested in
Mailpit (desktop, phone width; 87% CSS support, rest inlined).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tasks/main.yml

@@ -43,6 +43,14 @@
     wait: true
     wait_timeout: "{{ listmonk_wait_timeout }}"
 
+- name: Store the system e-mail templates
+  kubernetes.core.k8s:
+    kubeconfig: "{{ listmonk_kubeconfig | default(omit, true) }}"
+    context: "{{ listmonk_kube_context | default(omit, true) }}"
+    state: present
+    apply: true
+    definition: "{{ lookup('ansible.builtin.template', 'email-configmap.yml.j2') | from_yaml }}"
+
 - name: Deploy listmonk
   kubernetes.core.k8s:
     kubeconfig: "{{ listmonk_kubeconfig | default(omit, true) }}"