Hunter Allen enhanced the ros2/rosbag2 repository by implementing IDL relative includes and message definition improvements. Using C++ and IDL, Hunter enabled local message definitions to reference each other flexibly, reducing integration risk and maintenance overhead. The work included adding a missing message definition to complete the IDL-based messaging path and addressing linter warnings to maintain continuous integration stability. By improving the handling of message dependencies, Hunter’s changes help prevent build-time and runtime failures, supporting more robust downstream compatibility. The technical approach demonstrated a solid understanding of C++ development, IDL, and unit testing, delivering a focused and maintainable feature enhancement.