installer: create namespace with kustomization
diff --git a/core/installer/cmd/env-tmpl/namespace.yaml b/core/installer/cmd/env-tmpl/namespace.yaml
new file mode 100644
index 0000000..0c14654
--- /dev/null
+++ b/core/installer/cmd/env-tmpl/namespace.yaml
@@ -0,0 +1,8 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: {{ .Name }}
+  labels:
+    pcloud-instance-id: {{ .Name }}
+  annotations:
+    helm.sh/resource-policy: keep