FEAT(repo): add App of Apps self-reference

- Add application.yaml for ArgoCD self-registration
- Update kustomization.yaml to include application.yaml
- Set prune: false to prevent cascade deletion

application.yaml

@@ -0,0 +1,33 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: security
+  namespace: argocd
+  finalizers:
+    - resources-finalizer.argocd.argoproj.io
+spec:
+  project: default
+
+  source:
+    repoURL: https://github.com/K3S-HOME/security.git
+    targetRevision: main
+    path: .
+
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: argocd
+
+  syncPolicy:
+    automated:
+      prune: false
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true
+    retry:
+      limit: 5
+      backoff:
+        duration: 5s
+        factor: 2
+        maxDuration: 3m
+
+  revisionHistoryLimit: 10

kustomization.yaml

@@ -2,6 +2,9 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 
 resources:
+  # Self-reference for App of Apps pattern
+  - application.yaml
+
   - authelia/argocd.yaml
   - vault/argocd.yaml
   - external-secrets/argocd.yaml