Add retryable normalization fallbacks

internal/framework/pipeline/normalizer_registry.go

@@ -80,12 +80,23 @@ func RegisterNormalizerBuilder[T any](registry *NormalizerRegistry, spec ModuleS
 			if err != nil {
 				return erasedTypedResult{}, err
 			}
-			return erasedTypedResult{Value: result.Value, Warnings: result.Warnings}, nil
+			return erasedTypedResult{Value: result.Value, Warnings: cloneWarnings(result.Warnings), Retry: cloneNormalizeRetry(result.Retry)}, nil
 		},
 	}
 	return nil
 }
 
+func cloneNormalizeRetry(retry *contracts.NormalizeRetry) *contracts.NormalizeRetry {
+	if retry == nil {
+		return nil
+	}
+	return &contracts.NormalizeRetry{
+		ReasonCode:       retry.ReasonCode,
+		Message:          retry.Message,
+		FallbackWarnings: cloneWarnings(retry.FallbackWarnings),
+	}
+}
+
 func (r *NormalizerRegistry) validateOptions(key string, kind contracts.ArtifactKind, options map[string]any) error {
 	if r == nil {
 		return fmt.Errorf("normalizer registry must not be nil")