codex: manage generated skills with home-manager

nixos/dotfiles-links.nix

@@ -55,9 +55,13 @@ let
     };
 in
 {
+  imports = [ ../home-manager/codex-generated-skills.nix ];
+
   home.file =
     builtins.listToAttrs (map mkManaged managedRelFiles);
 
+  myModules.codexGeneratedSkills.enable = true;
+
   # Home Manager directory links for .emacs.d resolve through the store on this
   # machine, which breaks Elpaca's writable state under ~/.emacs.d/elpaca.
   # Manage placement here instead so ~/.emacs.d always points at the live