Auto-roll arr apps on Redis env change via Reloader

The *-env ConfigMaps are plain (unhashed) resources consumed by fixed-name
envFrom, so adding the Redis env would not restart the running pods and #14 would
stay inert until a manual rollout. Annotate the sonarr/radarr/prowlarr
Deployments with configmap.reloader.stakater.com/auto:"true" (repo convention;
Reloader is deployed in reloader-system) so ArgoCD sync + Reloader roll the apps
automatically when the ConfigMap changes.

apps/base/arrstack/prowlarr/deployment.yaml

@@ -4,6 +4,13 @@ kind: Deployment
 metadata:
   name: prowlarr
   namespace: arrstack
+  annotations:
+    # prowlarr-env is a plain (unhashed) ConfigMap consumed by fixed-name envFrom,
+    # so editing it does not roll the Deployment on its own. Reloader watches the
+    # referenced ConfigMap and triggers a rolling restart on change, so adding the
+    # Redis env activates the #14 features on the next ArgoCD sync without a manual
+    # `rollout restart`.
+    configmap.reloader.stakater.com/auto: "true"
 spec:
   # Active-active: the -unkin2 fork keeps all state in the shared Postgres
   # (arrstack-postgres) and coordinates via Postgres advisory locks, so N

apps/base/arrstack/radarr/deployment.yaml

@@ -4,6 +4,13 @@ kind: Deployment
 metadata:
   name: radarr
   namespace: arrstack
+  annotations:
+    # radarr-env is a plain (unhashed) ConfigMap consumed by fixed-name envFrom,
+    # so editing it does not roll the Deployment on its own. Reloader watches the
+    # referenced ConfigMap and triggers a rolling restart on change, so adding the
+    # Redis env activates the #14 features on the next ArgoCD sync without a manual
+    # `rollout restart`.
+    configmap.reloader.stakater.com/auto: "true"
 spec:
   # Active-active: the -unkin2 fork keeps all state in the shared Postgres
   # (arrstack-postgres) and coordinates via Postgres advisory locks, so N

apps/base/arrstack/sonarr/deployment.yaml

@@ -4,6 +4,13 @@ kind: Deployment
 metadata:
   name: sonarr
   namespace: arrstack
+  annotations:
+    # sonarr-env is a plain (unhashed) ConfigMap consumed by fixed-name envFrom,
+    # so editing it does not roll the Deployment on its own. Reloader watches the
+    # referenced ConfigMap and triggers a rolling restart on change, so adding the
+    # Redis env activates the #14 features on the next ArgoCD sync without a manual
+    # `rollout restart`.
+    configmap.reloader.stakater.com/auto: "true"
 spec:
   # Active-active: the -unkin2 fork keeps all state in the shared Postgres
   # (arrstack-postgres) and coordinates via Postgres advisory locks, so N