During April 2025, Tania Reyes developed a policy enforcement feature for the Jesus-Santos-babelgroup/Proyecto-Final repository, focusing on client eligibility validation. She implemented the Age-Client Plus Contract Term Denial Rule using Java and Spring Boot, which calculates the sum of a client’s age and contract term in years, denying eligibility when the total is less than or equal to 80. Her approach included explicit validation for missing birth or contract dates, ensuring clear error handling. Tania reinforced reliability by writing comprehensive unit tests in Java, covering all threshold scenarios and missing data cases, resulting in robust, maintainable backend code.