Developed the foundational infrastructure for the Circle-Resizer feature in the Samsung/ONE repository, focusing on establishing a robust build and entrypoint framework to support future enhancements. Leveraged C++ and CMake to implement a modular build system, main entry point, and command-line interface argument parsing, ensuring the codebase remains stable as new features are integrated. This initial groundwork enables iterative development, streamlined testing, and safer integration of additional functionality. By preparing the repository with maintainable scaffolding and clear entrypoints, the work reduces future integration risks and accelerates ongoing development, emphasizing maintainability and deployability through careful use of build system and CLI skills.