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/monitoring/grafana-oauth2client.yaml

@@ -24,9 +24,9 @@ spec:
     - code
   scope: openid email profile
   redirectUris:
-    - https://grafana.DOMAIN_SUFFIX/login/generic_oauth
+    - https://metrics.DOMAIN_SUFFIX/login/generic_oauth
   postLogoutRedirectUris:
-    - https://grafana.DOMAIN_SUFFIX/
+    - https://metrics.DOMAIN_SUFFIX/
   tokenEndpointAuthMethod: client_secret_post
   secretName: grafana-oidc
   skipConsent: true