fix: clear stuck Helm lock before Loki install

ansible/roles/observability/tasks/main.yml

@@ -87,6 +87,18 @@
   failed_when: false
   when: loki_enabled
 
+- name: Clear stuck Helm lock for Loki
+  command: kubectl -n {{ observability_namespace }} delete secret sh.helm.release.v1.loki.v1 --ignore-not-found=true
+  changed_when: false
+  failed_when: false
+  when: loki_enabled
+
+- name: Uninstall failed Loki release (if stuck)
+  command: helm uninstall loki -n {{ observability_namespace }}
+  changed_when: false
+  failed_when: false
+  when: loki_enabled
+
 - name: Install Loki
   command: >-
     helm upgrade --install loki grafana/loki