remove: Docs (impress) and People (desk) from La Suite

Collabora stays (Drive needs it for WOPI document editing).
Removed: Helm charts, values, nginx configs, patches, OIDC clients,
Vault secrets, S3 buckets, Pingora routes, Kratos return URLs,
overlay image overrides and resource patches, local-up.sh restarts.

base/lasuite/seaweedfs-buckets.yaml

@@ -22,13 +22,11 @@ spec:
               mc alias set weed "$ENDPOINT" "$S3_ACCESS_KEY" "$S3_SECRET_KEY"
 
               for bucket in \
-                sunbeam-docs \
                 sunbeam-meet \
                 sunbeam-drive \
                 sunbeam-messages \
                 sunbeam-messages-imports \
                 sunbeam-conversations \
-                sunbeam-people \
                 sunbeam-git-lfs \
                 sunbeam-game-assets \
                 sunbeam-ml-models; do