Worked on targeted improvements in two open-source projects, focusing on both feature development and code robustness. In ankidroid/Anki-Android, enhanced the settings search by manually indexing external context menu keys, making related settings more discoverable for users. This involved Android development and settings management using Kotlin and XML. Later, contributed to dora-rs/dora by addressing a fragile workaround in daemon state management, replacing a const-based empty set with a static initialization in Rust. This change improved reliability and simplified maintenance in the system programming context. The work demonstrated careful attention to usability, code quality, and long-term maintainability across both repositories.