Lori Shu focused on stabilizing macro-based header handling in the mxsm/rocketmq-rust repository, addressing a parsing issue in the RequestHeaderCodecV2 macro. By replacing fragile string matching with a TokenStream-based approach for detecting the flatten attribute, Lori improved the reliability and maintainability of macro parsing in Rust. This change reduced production parsing errors and supported safer evolution of the header encoding path. Alongside the main bug fix, Lori performed code refactoring and import cleanups to enhance readability. The work demonstrated proficiency in Rust programming, macro development, and code hygiene, reflecting a thoughtful approach to robust and maintainable code.