Amy delivered UTF-8 encoding policy enforcement for text data ingestion in the w3ctag/design-principles repository, focusing on enhancing data integrity and internationalization readiness. She implemented strict requirements for UTF-8 encoding across all new text-based data formats ingested by browsers, ensuring consistency and reliability in data handling. Amy updated the project’s documentation using Markdown to clarify MIME type and data format guidelines, making UTF-8 mandatory for text content. Her work was consolidated into a single, traceable commit, providing a clear audit trail. This contribution addressed cross-browser compatibility concerns and improved the clarity and maintainability of documentation for future development.