fix(dotfiles): stop passing unused guest libraries

src/dotfiles/AGENTS.md

@@ -2,6 +2,8 @@
 
 ## Gotchas
 
+- `src/dotfiles/guests.nix` does not accept a `lib` argument.
+  Do not pass `lib` when importing it.
 - The registry collector reads only top-level host `config.registry` declarations.
   Registry declarations inside guest interiors live under `config.containers.<guest>.config.registry`.
   The collected registry does not include those guest-interior declarations.

src/dotfiles/default.nix

@@ -25,7 +25,6 @@ let
   guestModules = import ./guests.nix {
     inherit
       inputs
-      lib
       registry
       specialArgs
       util