Add cloudhost-platform Helm chart and registry ingress manifests.

Deploy backend, frontend, PostgreSQL, and Redis on Kubernetes with optional Ingress/TLS, SQL migration hooks, and public registry exposure at repo.3fase.ir.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/helm/cloudhost-platform/templates/postgres-pvc.yaml

@@ -0,0 +1,19 @@
+{{- if .Values.postgres.enabled }}
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: {{ include "cloudhost-platform.postgres.fullname" . }}-data
+  namespace: {{ include "cloudhost-platform.namespace" . }}
+  labels:
+    app: {{ include "cloudhost-platform.postgres.fullname" . }}
+    {{- include "cloudhost-platform.labels" . | nindent 4 }}
+spec:
+  accessModes:
+    - ReadWriteOnce
+  {{- if .Values.global.storageClass }}
+  storageClassName: {{ .Values.global.storageClass | quote }}
+  {{- end }}
+  resources:
+    requests:
+      storage: {{ .Values.postgres.storage | quote }}
+{{- end }}