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 documentation using Markdown to mandate UTF-8 for text content and clarified MIME type and data format guidelines, providing clear instructions for future contributors. Her work was consolidated into a single, traceable commit, reflecting a methodical approach to documentation and policy enforcement. No bug fixes were addressed during this period.