During November 2024, Dark77_77 refactored the movie domain model in the MrsSbr/amm-java-9-91-2024 repository, focusing on improving type safety and extensibility. They introduced a Genre enum and a new Movie interface using Java and object-oriented programming principles, restructuring the class hierarchy to better support future genre additions. By adding explicit descriptions for comedy and drama genres, Dark77_77 enhanced metadata clarity for downstream UI and API consumers. This targeted feature work reduced future maintenance risk and streamlined the process for expanding genre support, demonstrating a thoughtful approach to domain modeling and codebase evolution within a short project period.