Worked on the unicode-org/icu repository to enhance data integrity by implementing const-correctness for generated common data structures in C++. Focused on the pkg_gencmn.cpp component, the work introduced const qualifiers to enforce immutability after initialization, preventing accidental modification of shared data. Leveraging low-level programming skills and expertise in data structure definition, the changes stabilized core data paths and improved maintainability within the code-generation workflow. This update aligned with repository standards, enabling safer downstream usage and more reliable testing. The approach demonstrated a careful application of C++ language features to address data reliability concerns in a widely used internationalization library.