fix(platform): apply production hardening from audit plan

Close billing, tenancy, migration, build, and CI/CD gaps identified in the
audit: wallet/gateway guards, full-UUID namespaces, idempotent migrations with
base schema, stateful service stability, safer Dockerfiles/git builds, and
platform chart hardening (Redis auth, RollingUpdate, backups, Swagger off).

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

backend/helm/cloudhost-app/templates/rabbitmq-deployment.yaml

@@ -2,11 +2,22 @@
 {{- $name       := include "cloudhost-app.name" . -}}
 {{- $ns         := include "cloudhost-app.namespace" . -}}
 {{- $rabbitName := printf "%s-rabbitmq" $name -}}
+{{- /* Preserve the existing password across upgrades — RabbitMQ only applies
+       RABBITMQ_DEFAULT_PASS on first boot, so a regenerated secret would
+       diverge from the credentials stored in the persisted volume. */ -}}
+{{- $rabbitSecretName := printf "%s-secret" $rabbitName -}}
+{{- $existingRabbit := lookup "v1" "Secret" $ns $rabbitSecretName -}}
+{{- $rabbitPass := "" -}}
+{{- if and $existingRabbit $existingRabbit.data (index $existingRabbit.data "password") -}}
+{{- $rabbitPass = index $existingRabbit.data "password" | b64dec -}}
+{{- else -}}
+{{- $rabbitPass = randAlphaNum 16 -}}
+{{- end -}}
 ---
 apiVersion: v1
 kind: Secret
 metadata:
-  name: {{ $rabbitName }}-secret
+  name: {{ $rabbitSecretName }}
   namespace: {{ $ns }}
   labels:
     app: {{ $rabbitName }}
@@ -16,7 +27,7 @@ metadata:
 type: Opaque
 data:
   username: {{ "appuser" | b64enc | quote }}
-  password: {{ randAlphaNum 16 | b64enc | quote }}
+  password: {{ $rabbitPass | b64enc | quote }}
 ---
 apiVersion: v1
 kind: PersistentVolumeClaim
@@ -48,6 +59,9 @@ metadata:
     {{- include "cloudhost-app.labels" . | nindent 4 }}
 spec:
   replicas: 1
+  # RWO volume + single replica: recreate instead of rolling update.
+  strategy:
+    type: Recreate
   selector:
     matchLabels:
       app: {{ $rabbitName }}
@@ -58,7 +72,7 @@ spec:
     spec:
       containers:
         - name: rabbitmq
-          image: {{ printf "rabbitmq:%s-management-alpine" (.Values.rabbitmq.version | default "3.13") }}
+          image: {{ include "cloudhost-app.baseImage" (dict "root" $ "image" (printf "rabbitmq:%s-management-alpine" (.Values.rabbitmq.version | default "3.13"))) }}
           ports:
             - containerPort: 5672
               name: amqp
@@ -68,12 +82,12 @@ spec:
             - name: RABBITMQ_DEFAULT_USER
               valueFrom:
                 secretKeyRef:
-                  name: {{ $rabbitName }}-secret
+                  name: {{ $rabbitSecretName }}
                   key: username
             - name: RABBITMQ_DEFAULT_PASS
               valueFrom:
                 secretKeyRef:
-                  name: {{ $rabbitName }}-secret
+                  name: {{ $rabbitSecretName }}
                   key: password
           volumeMounts:
             - name: rabbitmq-data