Nomad changes

docs/snippets/csharp/plugins/plugin_validator.md

@@ -0,0 +1,50 @@
+```csharp title="C#"
+using Kreuzberg;
+
+var validator = new ContentTypeValidator("application/pdf", "text/plain");
+ValidatorRegistry.Register(validator);
+
+public class ContentTypeValidator : IValidator
+{
+    private readonly string[] _allowedMimeTypes;
+
+    public ContentTypeValidator(params string[] allowedMimeTypes)
+    {
+        _allowedMimeTypes = allowedMimeTypes;
+    }
+
+    public string Name => "content-type-validator";
+    public string Version => "1.0.0";
+
+    public void Initialize()
+    {
+        Console.WriteLine($"Content type validator initialized with types: {string.Join(", ", _allowedMimeTypes)}");
+    }
+
+    public void Shutdown()
+    {
+        Console.WriteLine("Content type validator shut down");
+    }
+
+    public void Validate(ExtractionResult result, ExtractionConfig config)
+    {
+        if (!_allowedMimeTypes.Contains(result.MimeType))
+        {
+            throw new KreuzbergException(
+                $"MIME type {result.MimeType} not allowed. Allowed types: {string.Join(", ", _allowedMimeTypes)}",
+                1002
+            );
+        }
+    }
+
+    public bool ShouldValidate(ExtractionResult result, ExtractionConfig config)
+    {
+        return true;
+    }
+
+    public int Priority()
+    {
+        return 50;
+    }
+}
+```