Remove stuck portainer_agent container before redeploying

If the container exists but is in a Restarting state (e.g. due to a
stale AGENT_HOST env var), remove it so the deploy task creates a
fresh container with the correct config.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

playbooks/find_docker_enroll_portainer.yml

@@ -107,6 +107,12 @@
       changed_when: false
       failed_when: false
 
+    - name: Remove portainer_agent container if stuck in restart loop
+      community.docker.docker_container:
+        name: portainer_agent
+        state: absent
+      when: "'Restarting' in (agent_status.stdout | default(''))"
+
     - name: Pull Portainer Agent image
       community.docker.docker_image:
         name: portainer/agent