Worked on strengthening the mocked data layer for the univelop/yust repository, focusing on backend development and mocking using Dart. Addressed a critical issue in the mocked database service by introducing null checks before accessing nested JSON path segments, which prevented runtime errors when certain segments were missing. This technical approach improved the robustness of data retrieval in test environments and enhanced overall test reliability. No new user-facing features were added during this period, as the primary goal was to reduce flaky test failures and ensure safer, more predictable behavior in the mock service, contributing to a more stable development workflow.