fix(semaphore): make network creation more robust and earlier in legacy block

ansible/roles/semaphore/tasks/main.yml

@@ -56,13 +56,12 @@
         - "{{ semaphore_postgres_container_name }}"
         - "{{ semaphore_container_name }}"
 
-    - name: Create dedicated Podman network for Semaphore + PostgreSQL
+    - name: Ensure dedicated Podman network exists
       ansible.builtin.command:
-        cmd: "podman network create semaphore-net"
+        cmd: "podman network exists semaphore-net || podman network create semaphore-net"
       become: true
-      register: net_result
-      changed_when: "'already exists' not in net_result.stderr"
       failed_when: false
+      changed_when: false
 
     - name: Ensure required Podman volumes exist (reuse if present)
       ansible.builtin.command: