refactor: remove La Suite services (except Meet + Collabora), delete local overlay

La Suite Messages, Calendars, Drive, Projects, Hive, Integration, and
Postfix are replaced by Stalwart (mail) and Tuwunel (messaging). Meet
and Collabora remain for video conferencing and document editing.

Local overlay was POC only — all deployment targets production now.

Deleted: 37 La Suite manifests, Drive Helm chart, 7 local overlay files,
stale MTA-in hostPort patch. Cleaned up production image overrides and
resource patches for removed services.

base/lasuite/seaweedfs-buckets.yaml

@@ -1,45 +0,0 @@
-apiVersion: batch/v1
-kind: Job
-metadata:
-  name: seaweedfs-bucket-init
-  namespace: lasuite
-  annotations:
-    # Run once on first deploy; manually delete to re-run if needed.
-    helm.sh/hook: post-install
-spec:
-  template:
-    spec:
-      restartPolicy: OnFailure
-      containers:
-        - name: mc
-          image: minio/mc:latest
-          command:
-            - /bin/sh
-            - -c
-            - |
-              set -e
-              ENDPOINT=http://seaweedfs-filer.storage.svc.cluster.local:8333
-              mc alias set weed "$ENDPOINT" "$S3_ACCESS_KEY" "$S3_SECRET_KEY"
-
-              for bucket in \
-                sunbeam-meet \
-                sunbeam-drive \
-                sunbeam-messages \
-                sunbeam-messages-imports \
-                sunbeam-conversations \
-                sunbeam-git-lfs \
-                sunbeam-game-assets \
-                sunbeam-ml-models \
-                sunbeam-stalwart \
-                sunbeam-sccache; do
-                mc mb --ignore-existing "weed/$bucket"
-                echo "Ensured bucket: $bucket"
-              done
-
-              # Enable object versioning on buckets that require it.
-              # Drive's WOPI GetFile response includes X-WOPI-ItemVersion from S3 VersionId.
-              # SeaweedFS doesn't support `mc versioning` — use the S3 API directly.
-              mc versioning enable weed/sunbeam-drive || echo "Versioning not supported by SeaweedFS mc, skipping (filer handles versioning natively)"
-          envFrom:
-            - secretRef:
-                name: seaweedfs-s3-credentials