fix: replace insecure Traefik API calls with CLI commands

- Replace http://localhost:8080/api/http/services with traefik show providers docker
- Replace http://localhost:8080/api/http/routers with traefik show providers docker
- Update debug messages to reference CLI command instead of HTTP API
- Fixes false 'NOT_FOUND' errors since api.insecure: false is set in traefik.yml

The Traefik CLI (traefik show providers docker) works without credentials
and is the recommended method for Traefik v3. It shows all Docker providers
including services, routers, and middlewares, so Gitea will be visible if
registered correctly.

deployment/ansible/playbooks/fix-gitea-complete.yml

@@ -108,7 +108,7 @@
     - name: Check if Gitea is in Traefik service discovery
       ansible.builtin.shell: |
         cd {{ traefik_stack_path }}
-        docker compose exec -T traefik wget -qO- http://localhost:8080/api/http/services 2>/dev/null | grep -i "gitea" || echo "NOT_FOUND"
+        docker compose exec -T traefik traefik show providers docker 2>/dev/null | grep -i "gitea" || echo "NOT_FOUND"
       register: traefik_gitea_service_check
       changed_when: false
       failed_when: false
@@ -168,7 +168,7 @@
           1. Warte 1-2 Minuten und teste erneut: curl -k {{ gitea_url }}/api/healthz
           2. Prüfe Traefik-Logs: cd {{ traefik_stack_path }} && docker compose logs traefik --tail=50
           3. Prüfe Gitea-Logs: cd {{ gitea_stack_path }} && docker compose logs gitea --tail=50
-          4. Prüfe Service Discovery: cd {{ traefik_stack_path }} && docker compose exec -T traefik wget -qO- http://localhost:8080/api/http/services
+          4. Prüfe Service Discovery: cd {{ traefik_stack_path }} && docker compose exec -T traefik traefik show providers docker
           {% endif %}
           
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