Refactor common modules.

hosts/zippy/default.nix

@@ -3,7 +3,10 @@
   imports = [
     ../../common/encrypted-btrfs-layout.nix
     ../../common/global
-    ../../common/compute-node.nix
+    ../../common/cluster-member.nix  # Consul + storage clients
+    ../../common/nomad-worker.nix     # Nomad client (runs jobs)
+    # NOTE: zippy is NOT a server - no nomad-server.nix import
+    ../../common/glusterfs.nix        # GlusterFS server (temp during migration)
 #    ../../common/ethereum.nix
     ../../common/nfs-services-server.nix  # NFS server for /data/services
     # To move NFS server role to another host: