feat(home): extract CLI tools into modular home/base structure

- Add individual modules for: bat, carapace, direnv, eza, fzf, lf, nitch,
  television, zellij, zellij-ps, zoxide
- Centralize in home/base/cli-tools/ with default.nix aggregator
- Simplify home/base/packages by removing extracted tools

home/base/cli-tools/zoxide.nix

@@ -0,0 +1,19 @@
+# Zoxide — smarter cd with Fish and Nushell integration.
+{
+  config,
+  lib,
+  ...
+}:
+with lib; let
+  cfg = config.base.cliTools.zoxide;
+in {
+  options.base.cliTools.zoxide.enable = mkEnableOption "enable zoxide smarter cd";
+
+  config = mkIf cfg.enable {
+    programs.zoxide = {
+      enable = true;
+      enableFishIntegration = true;
+      enableNushellIntegration = true;
+    };
+  };
+}