feat: add missing packages and programs to base cli-tools

- packages.nix: essential packages (jq, ripgrep, fd, htop, coreutils,
  lazygit, httpie, just, devenv, gcc, go, sqlite, sqlite-vec, nix-index,
  nix-update, progress, comma, fabric-ai, llm, basecamp, hyprpaper-random,
  libnotify, trash-cli, unzip, zip, yazi)
- bat.nix: bat with nix-colors derived syntax theme
- carapace.nix: multi-shell completion (fish, nushell, bash)
- direnv.nix: automatic env loading with nix-direnv
- eza.nix: modern ls with icons, git status, long format
- lf.nix: terminal file manager with bat preview
- zoxide.nix: smarter cd with fish and nushell integration
- zellij-ps.nix: project session manager wrapping cli.zellij-ps

home/base/cli-tools/packages.nix

@@ -0,0 +1,51 @@
+# Essential CLI packages — core utilities always available on every host.
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+with lib; let
+  cfg = config.base.cliTools.essentials;
+in {
+  options.base.cliTools.essentials.enable = mkEnableOption "enable essential CLI packages";
+
+  config = mkIf cfg.enable {
+    home.packages = with pkgs; [
+      # Core utilities
+      coreutils
+      fd
+      htop
+      jq
+      ripgrep
+
+      # Dev tools
+      devenv
+      gcc
+      go
+      httpie
+      just
+      lazygit
+      nix-index
+      nix-update
+      progress
+      sqlite
+      sqlite-vec
+      tldr
+
+      # AI tools
+      comma
+      fabric-ai
+      llm
+
+      # Misc
+      basecamp
+      hyprpaper-random
+      libnotify
+      trash-cli
+      unzip
+      yazi
+      zip
+    ];
+  };
+}