Nomad changes

docs/snippets/dart/advanced/chunking_rag.md

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+```dart title="Dart"
+import 'package:kreuzberg/kreuzberg.dart';
+
+Future<void> main() async {
+  final config = ExtractionConfig(
+    useCache: true,
+    enableQualityProcessing: true,
+    forceOcr: false,
+    disableOcr: false,
+    chunking: const ChunkingConfig(
+      maxCharacters: 500,
+      overlap: 50,
+      trim: true,
+      chunkerType: ChunkerType.text,
+      sizing: ChunkSizing.characters(),
+      prependHeadingContext: false,
+      embedding: EmbeddingConfig(
+        model: EmbeddingModelType.preset(name: 'balanced'),
+        normalize: true,
+        batchSize: 32,
+        showDownloadProgress: false,
+      ),
+    ),
+    resultFormat: ResultFormat.unified,
+    outputFormat: OutputFormat.plain(),
+    includeDocumentStructure: false,
+    maxArchiveDepth: 3,
+    useLayoutForMarkdown: false,
+  );
+
+  final result = await KreuzbergBridge.extractFile('research_paper.pdf', null, config);
+  final chunks = result.chunks ?? const [];
+  for (final chunk in chunks) {
+    final index = chunk.metadata.chunkIndex;
+    final total = chunk.metadata.totalChunks;
+    final start = chunk.metadata.byteStart;
+    final end = chunk.metadata.byteEnd;
+    final preview = chunk.content.length > 100
+        ? chunk.content.substring(0, 100)
+        : chunk.content;
+    print('Chunk ${index + 1}/$total');
+    print('Position: $start-$end');
+    print('Content: $preview...');
+    final embedding = chunk.embedding;
+    if (embedding != null) {
+      print('Embedding: ${embedding.length} dimensions');
+    }
+  }
+}
+```