✨ feat(deploy): chart Vault CRDs gated by vault.enabled (default false)

Adds VaultAuth + VaultStaticSecret + VaultDynamicSecret templates gated behind .Values.vault.enabled (default false). Default helm install keeps working in degraded mode. Chart becomes Vault-ready without activating Vault dependencies. iac/ terraform + Vault workflow follow as PR-IAC1 (requires user manual prereqs in Vault).

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

chart/templates/vaultdynamicsecret.yaml

@@ -0,0 +1,17 @@
+{{- if .Values.vault.enabled }}
+apiVersion: secrets.hashicorp.com/v1beta1
+kind: VaultDynamicSecret
+metadata:
+  name: vso-db
+  namespace: {{ .Release.Namespace }}
+spec:
+  mount: postgres
+  path: {{ .Values.vault.postgresPath }}
+  destination:
+    create: true
+    name: vso-db-credentials
+  rolloutRestartTargets:
+    - kind: Deployment
+      name: {{ include "dance-lessons-coach.fullname" . }}
+  vaultAuthRef: auth
+{{- end }}