Madina developed the foundational Warmup1 package for the nuta312/Spring-2025-coding-challenge repository, implementing core warmup problems such as Sleep In, Monkey Trouble, and Sum Double in Java. She established a maintainable project structure that supports rapid iteration on additional exercises, focusing on clean code organization and extensibility. To improve repository hygiene, Madina configured the .gitignore file to exclude IDE-specific files and removed existing .idea directories from version control, reducing merge conflicts and noise. Her work leveraged skills in Java, Git, and software development best practices, resulting in a clean, testable codebase that is well-prepared for future feature expansion.