Nomad changes

docs/snippets/ruby/plugins/extractor_registration.md

@@ -0,0 +1,15 @@
+```ruby title="Ruby"
+require 'kreuzberg'
+
+# Register custom extractor with priority 50
+Kreuzberg.register_document_extractor(
+  name: "custom-json-extractor",
+  extractor: ->(content, mime_type, config) {
+    JSON.parse(content.to_s)
+  },
+  priority: 50
+)
+
+result = Kreuzberg.extract_file("document.json")
+puts "Extracted content length: #{result.content.length}"
+```