Moves setup files into embedded package.

internal/setup/cluster-services/longhorn/README.md

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+# Longhorn Storage
+
+See: [Longhorn Docs v 1.8.1](https://longhorn.io/docs/1.8.1/deploy/install/install-with-kubectl/)
+
+## Installation Notes
+
+- Manifest copied from https://raw.githubusercontent.com/longhorn/longhorn/v1.8.1/deploy/longhorn.yaml
+- Using kustomize to apply custom configuration (see `kustomization.yaml`)
+
+## Important Settings
+
+- **Number of Replicas**: Set to 1 (default is 3) to accommodate smaller clusters
+  - This avoids "degraded" volumes when fewer than 3 nodes are available
+  - For production with 3+ nodes, consider changing back to 3 for better availability
+
+## Common Operations
+
+- View volumes: `kubectl get volumes.longhorn.io -n longhorn-system`
+- Check volume status: `kubectl describe volumes.longhorn.io <volume-name> -n longhorn-system`
+- Access Longhorn UI: Set up port-forwarding with `kubectl -n longhorn-system port-forward service/longhorn-frontend 8080:80`

internal/setup/cluster-services/longhorn/install.sh

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+#!/bin/bash
+set -e
+set -o pipefail
+
+# Ensure WILD_INSTANCE is set
+if [ -z "${WILD_INSTANCE}" ]; then
+    echo "❌ ERROR: WILD_INSTANCE is not set"
+    exit 1
+fi
+
+# Ensure WILD_CENTRAL_DATA is set
+if [ -z "${WILD_CENTRAL_DATA}" ]; then
+    echo "❌ ERROR: WILD_CENTRAL_DATA is not set"
+    exit 1
+fi
+
+# Ensure KUBECONFIG is set
+if [ -z "${KUBECONFIG}" ]; then
+    echo "❌ ERROR: KUBECONFIG is not set"
+    exit 1
+fi
+
+INSTANCE_DIR="${WILD_CENTRAL_DATA}/instances/${WILD_INSTANCE}"
+CLUSTER_SETUP_DIR="${INSTANCE_DIR}/setup/cluster-services"
+LONGHORN_DIR="${CLUSTER_SETUP_DIR}/longhorn"
+
+echo "🔧 === Setting up Longhorn ==="
+echo ""
+
+# Templates should already be compiled
+echo "📦 Using pre-compiled Longhorn templates..."
+if [ ! -d "${LONGHORN_DIR}/kustomize" ]; then
+    echo "❌ ERROR: Compiled templates not found at ${LONGHORN_DIR}/kustomize"
+    echo "Templates should be compiled before deployment."
+    exit 1
+fi
+
+echo "🚀 Deploying Longhorn..."
+kubectl apply -k ${LONGHORN_DIR}/kustomize/
+
+echo "⏳ Waiting for Longhorn to be ready..."
+kubectl wait --for=condition=available --timeout=300s deployment/longhorn-driver-deployer -n longhorn-system || true
+
+echo ""
+echo "✅ Longhorn installed successfully"
+echo ""
+echo "💡 To verify the installation:"
+echo "  kubectl get pods -n longhorn-system"
+echo "  kubectl get storageclass"
+echo ""
+echo "🌐 To access the Longhorn UI:"
+echo "  kubectl port-forward -n longhorn-system svc/longhorn-frontend 8080:80"

internal/setup/cluster-services/longhorn/kustomize.template/ingress.yaml

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+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: longhorn-ingress
+  namespace: longhorn-system
+spec:
+  rules:
+    - host: "longhorn.{{ .cloud.internalDomain }}"
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: longhorn-frontend
+                port:
+                  number: 80
+  tls:
+    - secretName: wildcard-internal-wild-cloud-tls
+      hosts:
+        - "longhorn.{{ .cloud.internalDomain }}"

internal/setup/cluster-services/longhorn/kustomize.template/kustomization.yaml

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+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - longhorn.yaml
+  - ingress.yaml

internal/setup/cluster-services/longhorn/wild-manifest.yaml

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+name: longhorn
+description: Cloud-native distributed block storage for Kubernetes
+namespace: longhorn-system
+category: infrastructure
+
+dependencies:
+  - traefik