Enable pre-upgrade job for Longhorn in values.yaml, update MetalLB README for clarity on LoadBalancer IP assignment, and enhance Talos configuration with node IP validation for VIPs. Update cluster build documentation to reflect new application versions and configurations.

clusters/noble/apps/traefik/values.yaml

@@ -0,0 +1,29 @@
+# Traefik ingress controller — noble lab
+#
+# Chart: traefik/traefik — pin version on the helm command (e.g. 39.0.6).
+# DNS: point *.apps.noble.lab.pcenicni.dev to the LoadBalancer IP below.
+#
+# kubectl apply -f clusters/noble/apps/traefik/namespace.yaml
+# helm repo add traefik https://traefik.github.io/charts
+# helm upgrade --install traefik traefik/traefik -n traefik \
+#   --version 39.0.6 -f clusters/noble/apps/traefik/values.yaml --wait
+
+service:
+  type: LoadBalancer
+  annotations:
+    metallb.io/loadBalancerIPs: 192.168.50.211
+
+ingressClass:
+  enabled: true
+  isDefaultClass: true
+  name: traefik
+
+# Ingress-only; Gateway API objects from the chart are not needed here.
+gateway:
+  enabled: false
+
+gatewayClass:
+  enabled: false
+
+deployment:
+  replicas: 1