Nomad changes

docs/snippets/python/utils/chunking_rag.md

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+```python title="Python"
+import asyncio
+from kreuzberg import (
+    extract_file,
+    ExtractionConfig,
+    ChunkingConfig,
+    EmbeddingConfig,
+    EmbeddingModelType,
+)
+
+async def main() -> None:
+    config: ExtractionConfig = ExtractionConfig(
+        chunking=ChunkingConfig(
+            max_chars=500,
+            max_overlap=50,
+            embedding=EmbeddingConfig(
+                model=EmbeddingModelType.preset("balanced"),
+                normalize=True,
+                batch_size=16
+            )
+        )
+    )
+    result = await extract_file("research_paper.pdf", config=config)
+
+    chunks_with_embeddings: list = []
+    for chunk in result.chunks or []:
+        if chunk.embedding:
+            chunks_with_embeddings.append({
+                "content": chunk.content[:100],
+                "embedding_dims": len(chunk.embedding)
+            })
+
+    print(f"Chunks with embeddings: {len(chunks_with_embeddings)}")
+
+asyncio.run(main())
+```