fix(podman): use Type=notify + service-container so systemd sees pod crashes

The previous Type=oneshot + RemainAfterExit=true pattern made systemd
freeze pod units in 'active (exited)' as soon as 'podman play kube'
returned, so crash-looping containers were invisible to
'systemctl --user --failed' and Restart=on-failure never fired.

For every podman-pod role (immich, fdroid, ntfy, gitea, qfieldcloud,
unifi, matrix, uptime_kuma):

- switch units to Type=notify + NotifyAccess=all
- run 'podman kube play --service-container=true' so the unit's main
  PID stays alive as long as the pod
- use 'podman kube down' for ExecStop
- add TimeoutStartSec=180 to cover slow first-boot image pulls

Pod manifests: flip every container's restartPolicy from Always to
Never. systemd is now the single owner of the restart loop: container
exits -> pod dies -> service container dies -> unit fails ->
Restart=on-failure restarts everything cleanly. With Always, podman
retried internally and hid the failure from systemd.

CLAUDE.md updated to document the new canonical template and the
'restartPolicy: Never' requirement.

roles/matrix/templates/matrix.yaml.j2

@@ -0,0 +1,63 @@
+---
+apiVersion: v1
+kind: Pod
+metadata:
+  name: matrix
+  labels:
+    app: matrix
+spec:
+  containers:
+    - name: synapse
+      image: {{ synapse_image }}:{{ synapse_version }}
+      ports:
+        - containerPort: 8008
+          hostPort: {{ synapse_port }}
+{% if synapse_enable_federation %}
+        - containerPort: 8448
+          hostPort: {{ synapse_federation_port }}
+{% endif %}
+      env:
+        - name: SYNAPSE_CONFIG_PATH
+          value: /data/homeserver.yaml
+        - name: TZ
+          value: "{{ matrix_timezone }}"
+      volumeMounts:
+        - name: localtime
+          mountPath: /etc/localtime
+          readOnly: true
+        - name: synapse-data
+          mountPath: /data
+      livenessProbe:
+        httpGet:
+          path: /health
+          port: 8008
+        initialDelaySeconds: 30
+        periodSeconds: 30
+        timeoutSeconds: 10
+        failureThreshold: 3
+      restartPolicy: Never
+
+    - name: element
+      image: {{ element_image }}:{{ element_version }}
+      ports:
+        - containerPort: 80
+          hostPort: 8080
+      volumeMounts:
+        - name: element-config
+          mountPath: /app/config.json
+          subPath: config.json
+      restartPolicy: Never
+
+  volumes:
+    - name: localtime
+      hostPath:
+        path: /etc/localtime
+        type: File
+    - name: synapse-data
+      hostPath:
+        path: {{ synapse_data_dir }}
+        type: Directory
+    - name: element-config
+      hostPath:
+        path: {{ element_data_dir }}
+        type: Directory