Worked on enhancing transaction reliability in the getsentry/sentry-dart repository by addressing a critical bug in transaction rollback logic. Focused on ensuring that abortTransaction executes its provided function even when no parent Sentry span exists, which prevents silent skips and maintains data consistency. Applied debugging and error handling skills to identify the issue, then used Dart and test-driven development to implement and verify the fix. Added comprehensive tests to guard against future regressions, emphasizing robust transaction management. The work improved the stability of Sentry integration for Dart applications, supporting more reliable error tracking and consistent span handling across distributed traces.