Nomad changes

docs/snippets/dart/mcp/mcp_custom_client.md

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+<!-- snippet:syntax-only -->
+
+```dart title="Dart"
+import 'dart:convert';
+import 'dart:io';
+
+Future<void> main() async {
+  final process = await Process.start('kreuzberg', <String>['mcp']);
+
+  final request = <String, Object?>{
+    'method': 'tools/call',
+    'params': <String, Object?>{
+      'name': 'extract_file',
+      'arguments': <String, Object?>{
+        'path': 'document.pdf',
+        'async': true,
+      },
+    },
+  };
+
+  process.stdin.writeln(jsonEncode(request));
+  await process.stdin.flush();
+  await process.stdin.close();
+
+  final line = await process.stdout
+      .transform(utf8.decoder)
+      .transform(const LineSplitter())
+      .first;
+  print(line);
+
+  await process.exitCode;
+}
+```