Oskar Karcz focused on stabilizing core dependencies in the shanimal08/universe repository by upgrading the Tapplet library to version 1.0.4. He approached this task with careful dependency management, ensuring minimal changes to maintain compatibility with existing functionality. Using Shell scripting, Oskar validated the upgrade through automated tests and continuous integration pipelines, confirming that no regressions were introduced. Although no critical bugs were addressed during this period, his work reduced technical debt and improved the reliability of the codebase. This groundwork positioned the project for faster feature delivery in future cycles, emphasizing maintainability and risk reduction in the development process.