Variablize username more

hosts/prophet/users/default.nix

@@ -1,4 +1,4 @@
 { ... }:
 {
-  imports = [ ./jimbo ];
+  imports = [ ./main ];
 }

hosts/prophet/users/main/default.nix

@@ -1,6 +1,6 @@
-{ lib, ... }:
+{ config, lib, ... }:
 {
-  home-manager.users.jimbo = {
+  home-manager.users."${config.sysusers.main}" = {
     home = {
       desktop.enable = false;
       stateVersion = lib.mkForce "24.05";