Nomad changes

docs/snippets/ruby/advanced/token_reduction_example.md

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+```ruby title="Ruby"
+require 'kreuzberg'
+
+config = Kreuzberg::ExtractionConfig.new(
+  token_reduction: Kreuzberg::TokenReductionConfig.new(
+    mode: 'moderate',
+    preserve_markdown: true
+  )
+)
+
+result = Kreuzberg.extract_file_sync('verbose_document.pdf', config: config)
+
+original_tokens = result.metadata&.dig('original_token_count') || 0
+reduced_tokens = result.metadata&.dig('token_count') || 0
+reduction_ratio = result.metadata&.dig('token_reduction_ratio') || 0.0
+
+puts "Reduced from #{original_tokens} to #{reduced_tokens} tokens"
+puts "Reduction: #{(reduction_ratio * 100).round(1)}%"
+```