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>

CHANGELOG.md

@@ -9,6 +9,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+#### Helm Chart (`backend/helm/cloudhost-platform/`)
+- **Platform chart** — deploy control plane (backend, frontend, PostgreSQL, Redis) on Kubernetes
+- Ingress with `ingress.enabled` / `ingress.tls.enabled` and cert-manager TLS
+- Post-install migration Job for SQL files in `migrations/`
+- `values-production.example.yaml` for production overrides
+
 #### Helm Chart (`backend/helm/cloudhost-app/`)
 - **New Helm chart** replacing legacy Handlebars templates for all deployments
 - `deployment.yaml` — app deployment with `imagePullSecrets`, `imagePullPolicy: Always`, health probes