Tamara focused on enhancing the reliability of test data handling in the Eppo-exp/sdk-test-data repository during January 2025. She addressed a critical bug in the hashing and encoding logic, ensuring that scenarios involving empty string flag values were properly validated and tested. By expanding test coverage and refining data validation processes, Tamara improved the resilience and maintainability of the test suite. Her work, primarily using JSON and leveraging strong testing skills, contributed to better data integrity for feature flag scenarios. Although no new features were released, her targeted bug fix and comprehensive tests deepened the robustness of the codebase.