Worked on backend stability for the google/adk-docs repository, focusing on improving session lifecycle reliability rather than launching new features. Addressed a critical bug in Python that previously caused the temp_service variable to become None during session deletion, which could lead to downstream errors and incorrect API usage. The solution involved refining the delete_session method to preserve a valid service instance, ensuring correct side-effect semantics and reducing potential disruptions. Collaborated closely with another developer to co-author the fix, emphasizing code quality and alignment with intended API behavior. Demonstrated strong backend development skills and attention to detail in Python throughout the process.