Nomad changes

docs/snippets/dart/api/client_extract_single_file.md

@@ -0,0 +1,31 @@
+```dart title="Dart"
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:http/http.dart' as http;
+
+Future<void> main() async {
+  final file = File('document.pdf');
+  final bytes = await file.readAsBytes();
+
+  final request = http.MultipartRequest(
+    'POST',
+    Uri.parse('http://localhost:8000/extract'),
+  )..files.add(
+      http.MultipartFile.fromBytes(
+        'file',
+        bytes,
+        filename: 'document.pdf',
+      ),
+    );
+
+  final streamed = await request.send();
+  final response = await http.Response.fromStream(streamed);
+  if (response.statusCode >= 400) {
+    throw HttpException('Server returned ${response.statusCode}: ${response.body}');
+  }
+
+  final result = jsonDecode(response.body) as Map<String, dynamic>;
+  print(result['content'] ?? '');
+}
+```