feat: nb add claude code

hosts/nb/modules/development/claude-code.nix

@@ -0,0 +1,32 @@
+{ config, lib, pkgs, ... }:
+let
+  user = "dominik";
+  home = "/home/${user}";
+  npmPrefix = "${home}/.npm-global";
+  node = pkgs.nodejs; # or pkgs.nodejs_20
+in {
+  home-manager.users.dominik = { config, lib, pkgs, ... }: {
+    home.packages = with pkgs; [
+    ];
+
+    home.activation.installClaudeCode = lib.hm.dag.entryAfter [ "writeBoundary" ] ''
+      export PATH=${node}/bin:${pkgs.gnutar}/bin:${pkgs.gzip}/bin:${pkgs.unzip}/bin:${pkgs.curl}/bin:$PATH
+      mkdir -p ${npmPrefix}
+      if [ ! -x "${npmPrefix}/bin/claude" ]; then
+        echo "Installing @anthropic-ai/claude-code globally..."
+        # --global uses prefix from ~/.npmrc; PATH has node for postinstall
+        ${node}/bin/npm install -g @anthropic-ai/claude-code
+      fi
+    '';
+
+    home.activation.addChromeDevtoolsMCP = lib.hm.dag.entryAfter [ "installClaudeCli" ] ''
+      # Add via STDIO transport: Claude spawns `npx -y chrome-devtools-mcp ...`
+      # Browser must be running with remote debugging on 127.0.0.1:9222.
+      if ${config.home.homeDirectory}/.nix-profile/bin/claude mcp add --help >/dev/null 2>&1; then
+        ${config.home.homeDirectory}/.nix-profile/bin/claude mcp add --scope user chrome-devtools \
+          -- npx -y chrome-devtools-mcp --browserUrl=http://127.0.0.1:9222 || true
+      fi
+    '';
+  };
+
+}