better consistency, add dotfiles for takamaki and new features

modules/hosts/kitagawa/home/zsh.nix

@@ -5,8 +5,8 @@
       shutdown-takamaki = "ssh takamaki universal-shutdown";
       reboot-takamaki = "ssh takamaki universal-reboot";
       switch-takamaki-os = "ssh takamaki switch-os";
-      apply-config = "zsh -c 'cd /home/grey/nixos; git add .; nh os switch .'";
-      update-system = "zsh -c 'cd /home/grey/nixos; git add .; nh os switch -u .'";
+      apply-config = "zsh -c 'cd ${config.info.rootPath}; git add .; nh os switch .'";
+      update-system = "zsh -c 'cd ${config.info.rootPath}; git add .; nh os switch -u .'";
     };
   };
 }

modules/hosts/kitagawa/kitagawa.nix

@@ -46,6 +46,7 @@
 
         cli = {
           fastfetch.enable = true;
+          nh.enable = true;
         };
 
         extraPackages = with pkgs; [