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/hive-config.yaml

@@ -6,7 +6,7 @@ metadata:
 data:
   config.toml: |
     [drive]
-    base_url          = "http://drive.lasuite.svc.cluster.local:8000"
+    base_url          = "http://drive-backend.lasuite.svc.cluster.local:80"
     workspace         = "Game Assets"
     oidc_client_id    = "hive"
     oidc_token_url    = "http://hydra.ory.svc.cluster.local:4444/oauth2/token"