Sarwar Bhuiyan enhanced the Timeplus Proton repository by improving both documentation and core SQL logic to strengthen developer experience and data correctness. He refreshed the README to clarify Proton’s stream processing capabilities and added a detailed comparison with ClickHouse, making onboarding more efficient and reducing misconfiguration risks. Using SQL and Markdown, Sarwar updated the Change Data Capture (CDC) sample to include before-data for updates, enabling robust undo support in changelog queries. His work focused on maintainability and clarity, refactoring SQL logic to accurately capture state changes and ensuring that documentation and samples are easier to understand and use.