Sean O’Keeffe expanded the Miele appliance integration within the home-assistant/core repository by delivering two new feature sets focused on oven program enhancements. He added new steam cooking programs and extended oven functionality with hydroclean and rinse options, updating program identifiers and UI strings to support a broader range of use cases. Sean’s work involved backend development and API integration using Python, with careful attention to data modeling and unit testing to ensure reliability and maintainability. These contributions improved the flexibility and usability of Miele device support, enabling users to access more advanced appliance features through the Home Assistant platform.