During March 2026, contributed to both rust-lang/rust-analyzer and rust-lang/rust by enhancing code generation for Default implementations in Rust. Focused on migrating the generate_default_from_new assist to use SyntaxEditor and SyntaxFactory, replacing string-based code generation with abstract syntax tree manipulation for safer node insertion and improved maintainability. This approach established consistency across repositories and reduced the risk of formatting errors, setting a foundation for future extensibility. Leveraged Rust and advanced code generation techniques, with AI-assisted development accelerating progress. The work centered on feature enhancements and refactoring, prioritizing code quality and maintainability over bug fixes during this period.