Nomad changes

docs/snippets/elixir/utils/chunking_rag.md

@@ -0,0 +1,31 @@
+<!-- snippet:syntax-only -->
+
+```elixir
+config_json =
+  Jason.encode!(%{
+    "chunking" => %{
+      "max_characters" => 500,
+      "overlap" => 50,
+      "embedding" => %{
+        "model" => %{"preset" => %{"name" => "balanced"}},
+        "normalize" => true,
+        "batch_size" => 16
+      }
+    }
+  })
+
+{:ok, json} = Kreuzberg.extract_file_async("research_paper.pdf", nil, config_json)
+result = Jason.decode!(json)
+
+chunks_with_embeddings =
+  for chunk <- result["chunks"] || [],
+      embedding = chunk["embedding"],
+      is_list(embedding) do
+    %{
+      content: String.slice(chunk["content"] || "", 0, 100),
+      embedding_dims: length(embedding)
+    }
+  end
+
+IO.puts("Chunks with embeddings: #{length(chunks_with_embeddings)}")
+```