Add zoxide integration for smart directory navigation

- Add zoxide package to flake.nix
- Enable zoxide with zsh integration in modules/zsh.nix
- Configure zoxide to replace cd command with smart frecency-based navigation
- Add zi alias for interactive directory selection with fzf

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

flake.nix

@@ -74,6 +74,7 @@
         git-credential-oauth
         rsync
         gnumake
+        zoxide
       ];
 
       fonts.fontconfig.enable = true;

modules/zsh.nix

@@ -36,6 +36,9 @@ in
       # Modern CLI tools
       ftp = "termscp";
       
+      # Zoxide aliases
+      zi = "z -i";  # Interactive selection with fzf
+      
       # Nix helpers
       hm = "home-manager";
       hms = "home-manager switch --flake ~/.config/nix#yanlin";
@@ -112,6 +115,9 @@ in
       ZSH_AUTOSUGGEST_CLEAR_WIDGETS+=(vi-add-eol)
       ZSH_AUTOSUGGEST_CLEAR_WIDGETS+=(vi-add-next)
       ZSH_AUTOSUGGEST_ACCEPT_WIDGETS=(end-of-line vi-end-of-line vi-add-eol)
+      
+      # Zoxide configuration - replace cd with z for smart directory jumping
+      eval "$(zoxide init zsh --cmd cd)"
     '';
   };
   
@@ -130,6 +136,11 @@ in
     enableZshIntegration = true;
   };
   
+  programs.zoxide = {
+    enable = true;
+    enableZshIntegration = true;
+  };
+  
   # Manage Powerlevel10k configuration
   home.file.".p10k.zsh".source = ../config/p10k.zsh;