fix: ghostty ls colors

home/modules/zsh.nix

@@ -35,6 +35,12 @@
     };
 
     initContent = ''
+      # oh-my-zsh assumes macOS => BSD ls and aliases `ls -G`. But GNU
+      # coreutils `ls` (from nix) is first on PATH, where `-G` means
+      # --no-group, not color. Override after oh-my-zsh has loaded so ls
+      # actually colorizes (ll/la/l inherit this via alias expansion).
+      alias ls='ls --color=auto'
+
       # Conditional Editor logic
       if [[ -n $SSH_CONNECTION ]]; then
         export EDITOR='nano'