feat: Move cluster services to wild-directory as unified packages

Convert all 15 cluster services from embedded API format to
wild-directory packages using the unified manifest format:
- metallb, traefik, cert-manager, longhorn, snapshot-controller
- nfs, smtp, coredns, node-feature-discovery, nvidia-device-plugin
- externaldns, docker-registry, headlamp, crowdsec, utils

Changes:
- wild-manifest.yaml → manifest.yaml with is, defaultConfig, requires
- Eliminated configReferences and serviceConfig fields
- Flattened kustomize.template/ to package root
- Template vars use flat defaultConfig keys
- install.sh paths updated for apps/ layout
- Updated 9 app manifests: cloud.smtp.* → apps.smtp.* with requires
- Removed dead install: true field from 6 app manifests

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker-registry/deployment.yaml

@@ -0,0 +1,48 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: docker-registry
+  labels:
+    app: docker-registry
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: docker-registry
+  strategy:
+    rollingUpdate:
+      maxSurge: 0
+      maxUnavailable: 1
+    type: RollingUpdate
+  template:
+    metadata:
+      labels:
+        app: docker-registry
+    spec:
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 1000
+        runAsGroup: 1000
+        fsGroup: 1000
+        seccompProfile:
+          type: RuntimeDefault
+      containers:
+        - image: registry:3.0.0
+          name: docker-registry
+          securityContext:
+            allowPrivilegeEscalation: false
+            capabilities:
+              drop:
+                - ALL
+          ports:
+            - containerPort: 5000
+              protocol: TCP
+          volumeMounts:
+            - mountPath: /var/lib/registry
+              name: docker-registry-storage
+              readOnly: false
+      volumes:
+        - name: docker-registry-storage
+          persistentVolumeClaim:
+            claimName: docker-registry-pvc

docker-registry/ingress.yaml

@@ -0,0 +1,20 @@
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: docker-registry
+spec:
+  rules:
+    - host: {{ .host }}
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: docker-registry
+                port:
+                  number: 5000
+  tls:
+    - hosts:
+        - {{ .host }}
+      secretName: wildcard-internal-wild-cloud-tls

docker-registry/install.sh

@@ -0,0 +1,48 @@
+#!/bin/bash
+set -e
+set -o pipefail
+
+if [ -z "${WILD_INSTANCE}" ]; then
+    echo "ERROR: WILD_INSTANCE is not set"
+    exit 1
+fi
+
+if [ -z "${WILD_API_DATA_DIR}" ]; then
+    echo "ERROR: WILD_API_DATA_DIR is not set"
+    exit 1
+fi
+
+if [ -z "${KUBECONFIG}" ]; then
+    echo "ERROR: KUBECONFIG is not set"
+    exit 1
+fi
+
+INSTANCE_DIR="${WILD_API_DATA_DIR}/instances/${WILD_INSTANCE}"
+DOCKER_REGISTRY_DIR="${INSTANCE_DIR}/apps/docker-registry"
+
+echo "=== Setting up Docker Registry ==="
+echo ""
+
+echo "Using pre-compiled Docker Registry templates..."
+if [ ! -f "${DOCKER_REGISTRY_DIR}/kustomization.yaml" ]; then
+    echo "ERROR: Compiled templates not found at ${DOCKER_REGISTRY_DIR}"
+    echo "Templates should be compiled before deployment."
+    exit 1
+fi
+
+echo "Deploying Docker Registry..."
+kubectl apply -k "${DOCKER_REGISTRY_DIR}/"
+
+echo "Waiting for Docker Registry to be ready..."
+kubectl wait --for=condition=available --timeout=300s deployment/docker-registry -n docker-registry
+
+echo ""
+echo "Docker Registry installed successfully"
+echo ""
+echo "Deployment status:"
+kubectl get pods -n docker-registry
+kubectl get services -n docker-registry
+echo ""
+echo "To use the registry:"
+echo "  docker tag myimage registry.local/myimage"
+echo "  docker push registry.local/myimage"

docker-registry/kustomization.yaml

@@ -0,0 +1,14 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+namespace: docker-registry
+labels:
+  - includeSelectors: true
+    pairs:
+      app: docker-registry
+      managedBy: wild-cloud
+resources:
+  - deployment.yaml
+  - ingress.yaml
+  - service.yaml
+  - namespace.yaml
+  - pvc.yaml

docker-registry/manifest.yaml

@@ -0,0 +1,12 @@
+name: docker-registry
+is: docker-registry
+description: Private Docker image registry for cluster
+version: "3.0.0"
+namespace: docker-registry
+category: infrastructure
+requires:
+  - name: traefik
+  - name: cert-manager
+defaultConfig:
+  host: "registry.{{ .cloud.internalDomain }}"
+  storage: "100Gi"

docker-registry/namespace.yaml

@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: docker-registry

docker-registry/pvc.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: docker-registry-pvc
+spec:
+  storageClassName: longhorn
+  accessModes:
+    - ReadWriteOnce
+  volumeMode: Filesystem
+  resources:
+    requests:
+      storage: {{ .storage }}

docker-registry/service.yaml

@@ -0,0 +1,13 @@
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: docker-registry
+  labels:
+    app: docker-registry
+spec:
+  ports:
+    - port: 5000
+      targetPort: 5000
+  selector:
+    app: docker-registry