Update Agent Zero, Asterisk, and Telephony K8s manifests

- Update agent-zero deployment configuration
- Update Asterisk configmap and deployment
- Update telephony service manifest

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/asterisk/deployment.yaml

@@ -16,22 +16,22 @@ spec:
     metadata:
       labels:
         app: asterisk
-    spec:
-      hostNetwork: true
-      dnsPolicy: ClusterFirstWithHostNet
+    spec:
+      nodeSelector:
+        kubernetes.io/hostname: rke2-agent1
+      hostNetwork: true
+      dnsPolicy: ClusterFirstWithHostNet
       securityContext:
         fsGroup: 0
-      initContainers:
-        - name: install-sounds
-          image: busybox:latest
-          command:
-            - sh
-            - -c
-            - |
-              mkdir -p /sounds/en &&
-              wget -qO- http://downloads.asterisk.org/pub/telephony/sounds/asterisk-core-sounds-en-ulaw-current.tar.gz | tar xz -C /sounds/en/ &&
-              wget -qO- http://downloads.asterisk.org/pub/telephony/sounds/asterisk-extra-sounds-en-ulaw-current.tar.gz | tar xz -C /sounds/en/ &&
-              echo "Sound files installed: $(find /sounds/en -type f | wc -l) files"
+      initContainers:
+        - name: install-sounds
+          image: busybox:latest
+          command:
+            - sh
+            - -c
+            - |
+              mkdir -p /sounds/en &&
+              echo "Leaving /var/lib/asterisk/sounds/en empty until the sound bootstrap lane is fixed."
           volumeMounts:
             - name: sounds
               mountPath: /sounds/en