FEAT(goldilocks): add goldilocks labels to applica

- Add namespace.yaml with goldilocks.fairwinds.com/enabled label
- Enable VPA recommendations for all applications
- Update kustomization.yaml to include namespace resources
- Fix namespace names to match actual usage (umami -> analytics)

umami/kustomization.yaml

@@ -4,5 +4,9 @@ kind: Kustomization
 resources:
   # ArgoCD Application 리소스는 infrastructure/kustomization.yaml에서 관리
   # - argocd/umami.yaml
+
+  # Namespace with Goldilocks label
+  - namespace.yaml
+
   - vault/umami-password.yaml
   - ingress.yaml