refactor: modularize 'ai-tools'

home/modules/ai-tools/claude-code.nix

@@ -0,0 +1,60 @@
+{
+  lib,
+  config,
+  pkgs,
+  ...
+}:
+let
+  cfg = config.ai-tools.claude-code;
+  rtk-version = "0.18.1";
+in
+{
+  options.ai-tools.claude-code.enable = lib.mkEnableOption "claude code with rtk and ccline";
+
+  config = lib.mkIf cfg.enable {
+    programs.claude-code.enable = true;
+
+    home.packages = with pkgs; [
+      (stdenv.mkDerivation {
+        name = "ccline";
+        src = fetchurl {
+          url = "https://github.com/Haleclipse/CCometixLine/releases/download/v1.0.8/ccline-linux-x64.tar.gz";
+          hash = "sha256-Joe3Dd6uSMGi66QT6xr2oY/Tz8rA5RuKa6ckBVJIzI0=";
+        };
+        unpackPhase = "tar xzf $src";
+        installPhase = ''
+          mkdir -p $out/bin
+          cp ccline $out/bin/
+          chmod +x $out/bin/ccline
+        '';
+        meta = {
+          description = "CCometixLine Linux x64 CLI (Claude Code statusline)";
+          homepage = "https://github.com/Haleclipse/CCometixLine";
+          license = lib.licenses.mit;
+          platforms = [ "x86_64-linux" ];
+        };
+      })
+      (stdenv.mkDerivation {
+        name = "rtk-${rtk-version}";
+        version = rtk-version;
+        src = fetchurl {
+          url = "https://github.com/rtk-ai/rtk/releases/download/v${rtk-version}/rtk-x86_64-unknown-linux-gnu.tar.gz";
+          hash = "sha256-XoTia5K8b00OzcKYCufwx8ApkAS31DxUCpGSU0jFs2Q=";
+        };
+        unpackPhase = "tar xzf $src";
+        installPhase = ''
+          mkdir -p $out/bin
+          cp rtk $out/bin/
+          chmod +x $out/bin/rtk
+        '';
+        meta = {
+          description = "RTK - AI coding tool enhancer";
+          homepage = "https://www.rtk-ai.app";
+          license = lib.licenses.mit;
+          platforms = [ "x86_64-linux" ];
+        };
+      })
+      mcp-nixos
+    ];
+  };
+}