Nomad changes

docs/snippets/ruby/plugins/plugin_validator.md

@@ -0,0 +1,14 @@
+```ruby title="Ruby"
+require "kreuzberg"
+
+validator = lambda do |result|
+  raise StandardError, "Content too short" if result.content.length < 50
+end
+
+Kreuzberg.register_validator("min_length", validator, priority: 10)
+
+result = Kreuzberg.extract_file_sync("document.pdf")
+puts "Validated content length: #{result.content.length}"
+
+Kreuzberg.unregister_validator("min_length")
+```