Initial commit — LoginMaster tenant deployment toolkit

Toolkit per deployare/aggiornare un tenant LoginMaster su qualsiasi Kubernetes
(EKS/AKS/DOKS/Scaleway/vSphere/...). Contiene:

- deploy.sh: bootstrap di un nuovo tenant (idempotente, re-run protection,
  storage class auto-rilevata, prompt separati api/admin tag, generazione
  segreti crittografici via openssl rand).
- update.sh: rolling update zero-downtime con tag api/admin separati, rollback
  hint via 'kubectl rollout undo', riapplicazione opzionale del ConfigMap.
- templates/: 8 manifest parametrici (envsubst): namespace, cert-manager TLS
  Mongo, NetworkPolicy intra-namespace, ConfigMap, MongoDB StatefulSet 3 repliche
  con TLS interno + initContainer per keyfile/PEM, tenant-api Deployment 2 repliche
  con CA validation, tenant-admin, ingress nginx + Let's Encrypt.

Sicurezza: TLS interno Mongo (cert-manager CA self-signed 10y), keyFile per
auth replica set, password client mai in argv, NetworkPolicy che isola il
tenant, pod Mongo non-root (uid 999) con initContainer come root per i file
runtime in tmpfs.

templates/06-tenant-admin.yaml

@@ -0,0 +1,72 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: tenant-admin
+  namespace: ${NAMESPACE}
+spec:
+  selector:
+    app: tenant-admin
+  ports:
+    - port: 80
+      targetPort: 80
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: tenant-admin
+  namespace: ${NAMESPACE}
+spec:
+  replicas: 1
+  strategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxSurge: 1
+      maxUnavailable: 0
+  selector:
+    matchLabels:
+      app: tenant-admin
+  template:
+    metadata:
+      labels:
+        app: tenant-admin
+    spec:
+      imagePullSecrets:
+        - name: registry-codebaker
+      containers:
+        - name: tenant-admin
+          image: hub.codebaker.it/loginmaster-tenant/admin-tenant:${IMAGE_TAG_ADMIN}
+          env:
+            - name: VITE_APP_NAME
+              value: "LoginMaster Tenant Admin"
+            - name: VITE_API_BASE_URL
+              value: "https://${DOMAIN_API}"
+          ports:
+            - containerPort: 80
+          resources:
+            requests:
+              cpu: 50m
+              memory: 32Mi
+            limits:
+              cpu: 100m
+              memory: 64Mi
+          startupProbe:
+            httpGet:
+              path: /
+              port: 80
+            initialDelaySeconds: 3
+            periodSeconds: 5
+            failureThreshold: 20
+          readinessProbe:
+            httpGet:
+              path: /
+              port: 80
+            periodSeconds: 10
+            timeoutSeconds: 3
+            failureThreshold: 3
+          livenessProbe:
+            httpGet:
+              path: /
+              port: 80
+            periodSeconds: 20
+            timeoutSeconds: 5
+            failureThreshold: 3