Nomad changes

docs/snippets/csharp/error_handling_extract.md

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+```csharp title="C#"
+using System;
+using System.IO;
+using System.Net.Http;
+using System.Text.Json;
+
+var client = new HttpClient();
+
+try
+{
+    using (var fileStream = File.OpenRead("document.pdf"))
+    {
+        using (var content = new MultipartFormDataContent())
+        {
+            content.Add(new StreamContent(fileStream), "files", "document.pdf");
+
+            var response = await client.PostAsync("http://localhost:8000/extract", content);
+
+            if (!response.IsSuccessStatusCode)
+            {
+                var errorJson = await response.Content.ReadAsStringAsync();
+                var errorDoc = JsonDocument.Parse(errorJson);
+                var errorType = errorDoc.RootElement.GetProperty("error_type").GetString();
+                var message = errorDoc.RootElement.GetProperty("message").GetString();
+
+                Console.WriteLine($"Error: {errorType}: {message}");
+                return;
+            }
+
+            var json = await response.Content.ReadAsStringAsync();
+            Console.WriteLine($"Success: {json}");
+        }
+    }
+}
+catch (HttpRequestException e)
+{
+    Console.WriteLine($"Request failed: {e.Message}");
+}
+```