Refactor DB initialization handling: externalize database_init flag for svc-db-mariadb and svc-db-postgres, remove internal auto-detection, and pass explicit init signal from sys-stk-back-stateful. Improves clarity, avoids incorrect credential lookups, and stabilizes central DB setup.

Reference: ChatGPT conversation https://chatgpt.com/share/692def1c-a79c-800f-b7dd-35e1845424bf

roles/svc-db-mariadb/tasks/01_core.yml

@@ -1,7 +1,7 @@
 
 - name: Create Docker network for MariaDB
   community.docker.docker_network:
-    name: "{{ mariadb_network_name }}"
+    name: "{{ mariadb_network }}"
     state: present
     ipam_config:
       - subnet: "{{ mariadb_subnet }}"
@@ -15,7 +15,7 @@
       MARIADB_ROOT_PASSWORD:  "{{ mariadb_root_pwd }}"
       MARIADB_AUTO_UPGRADE:   "1"
     networks:
-      - name: "{{ mariadb_network_name }}"
+      - name: "{{ mariadb_network }}"
     volumes:
       - "{{ mariadb_volume }}:/var/lib/mysql"
     published_ports:

roles/svc-db-mariadb/tasks/main.yml

@@ -3,4 +3,4 @@
 
 - name: "Initialize database for '{{ database_name }}'"
   include_tasks: 02_init.yml
-  when: "{{ mariadb_init }}"
+  when: database_init | bool