feat: La Suite email/messages, buildkitd, monitoring, vault and storage updates

- Add Messages (email) service: backend, frontend, MTA in/out, MPA, SOCKS
  proxy, worker, DKIM config, and theme customization
- Add Collabora deployment for document collaboration
- Add Drive frontend nginx config and values
- Add buildkitd namespace for in-cluster container builds
- Add SeaweedFS remote sync and additional S3 buckets
- Update vault secrets across namespaces (devtools, lasuite, media,
  monitoring, ory, storage) with expanded credential management
- Update monitoring: rename grafana→metrics OAuth2Client, add Prometheus
  remote write and additional scrape configs
- Update local/production overlays with resource patches
- Remove stale login-ui resource patch from production overlay

base/lasuite/messages-mta-in-deployment.yaml

@@ -0,0 +1,43 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: messages-mta-in
+  namespace: lasuite
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: messages-mta-in
+  template:
+    metadata:
+      labels:
+        app: messages-mta-in
+    spec:
+      containers:
+        - name: messages-mta-in
+          image: messages-mta-in
+          ports:
+            - containerPort: 25
+          env:
+            - name: MDA_API_BASE_URL
+              valueFrom:
+                configMapKeyRef:
+                  name: messages-config
+                  key: MDA_API_BASE_URL
+            - name: MDA_API_SECRET
+              valueFrom:
+                secretKeyRef:
+                  name: messages-django-secret
+                  key: MDA_API_SECRET
+            - name: MAX_INCOMING_EMAIL_SIZE
+              value: "30000000"
+          securityContext:
+            capabilities:
+              add: ["NET_BIND_SERVICE"]
+          resources:
+            limits:
+              memory: 256Mi
+              cpu: 250m
+            requests:
+              memory: 64Mi
+              cpu: 50m