During September 2025, Schneider refactored the openmobilemaps/maps-core repository to expose the LineGeometryBuilder component through the public API, enabling broader reuse by downstream projects. This work involved relocating LineGeometryBuilder.h from an internal directory to a public one without altering its functionality, ensuring stability while clarifying API boundaries. Schneider applied disciplined version control and safe refactoring practices in C++ to maintain identical behavior throughout the process. The update improved the maintainability and extensibility of the codebase, laying a foundation for future API-driven enhancements and facilitating clearer integration points for other developers working with the maps-core library. No bugs were addressed.