refactor: simplify shared config contracts

modules/hosts/zenith/default.nix

@@ -7,6 +7,14 @@ let
   nixosModules = config.flake.modules.nixos;
   homeModules = config.flake.modules.homeManager;
   metaLib = config.meta.lib;
+  workstationHomeImports = [ homeModules.workstation-base ];
+  portableNoctalia = homeModules.noctalia-portable;
+  kiriHomeImports = workstationHomeImports ++ [
+    homeModules.syncthing
+    homeModules.qbittorrent-client
+    portableNoctalia
+  ];
+  ergonHomeImports = workstationHomeImports ++ [ portableNoctalia ];
 in
 {
   flake.modules.nixos.zenith = metaLib.mkHost {
@@ -39,29 +47,20 @@ in
 
     users = {
       kiri = {
-        account = metaLib.users.kiri;
+        account = metaLib.accounts.kiri;
         needsPassword = true;
-        homeImports = [
-          homeModules.workstation-base
-          homeModules.syncthing
-          homeModules.qbittorrent-client
-          homeModules.noctalia-portable
-        ];
+        homeImports = kiriHomeImports;
       };
 
       ergon = {
-        account = metaLib.users.ergon;
+        account = metaLib.accounts.ergon;
         needsPassword = true;
-        homeImports = [
-          homeModules.workstation-base
-          homeModules.noctalia-portable
-        ];
+        homeImports = ergonHomeImports;
       };
     };
 
     imports = [
-      nixosModules.workstation-base
-      nixosModules.qbittorrent-client
+      nixosModules.workstation-host
       nixosModules.laptop-power
       {
         hardware.enableRedistributableFirmware = true;