Nomad changes

docs/snippets/csharp/advanced/custom_validator.cs

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+using Kreuzberg;
+
+class MinLengthValidator : IValidator
+{
+    private readonly int _minLength;
+
+    public MinLengthValidator(int minLength)
+    {
+        _minLength = minLength;
+    }
+
+    public string Name => "min-length";
+    public int Priority => 10;
+
+    public void Validate(ExtractionResult result)
+    {
+        if (result.Content.Length < _minLength)
+        {
+            throw new KreuzbergValidationException(
+                $"Content too short: {result.Content.Length} < {_minLength}"
+            );
+        }
+    }
+}
+
+class QualityScoreValidator : IValidator
+{
+    private readonly double _minScore;
+
+    public QualityScoreValidator(double minScore)
+    {
+        _minScore = minScore;
+    }
+
+    public string Name => "quality-score";
+    public int Priority => 5;
+
+    public void Validate(ExtractionResult result)
+    {
+        var score = result.QualityScore;
+
+        if (score < _minScore)
+        {
+            throw new KreuzbergValidationException(
+                $"Quality score too low: {score:F2} < {_minScore:F2}"
+            );
+        }
+    }
+}
+
+class Program
+{
+    static void Main()
+    {
+        var minLengthValidator = new MinLengthValidator(minLength: 50);
+        var qualityValidator = new QualityScoreValidator(minScore: 0.7);
+
+        KreuzbergLib.RegisterValidator(minLengthValidator);
+        KreuzbergLib.RegisterValidator(qualityValidator);
+
+        try
+        {
+            var config = new ExtractionConfig
+            {
+                EnableQualityProcessing = true
+            };
+
+            var result = KreuzbergLib.ExtractFileSync("document.pdf", config);
+
+            Console.WriteLine("Validation passed");
+            Console.WriteLine($"Content length: {result.Content.Length}");
+        }
+        catch (KreuzbergValidationException ex)
+        {
+            Console.WriteLine($"Validation failed: {ex.Message}");
+        }
+        catch (KreuzbergException ex)
+        {
+            Console.WriteLine($"Error: {ex.Message}");
+        }
+    }
+}