During December 2025, Kais developed the Screen Wake Lock Persistence feature for voice conversations in the elevenlabs/packages repository. This work ensured that the screen remains active during calls, even as app visibility changes, thereby improving reliability for users. Kais implemented persistent wake lock logic tied to the session lifecycle and handled transitions between visible and background states. The solution was built using TypeScript and involved both front end and full stack development, with comprehensive tests covering session start, end, and visibility changes. Kais also performed codebase cleanup by removing test-only flags, ensuring robust test coverage and maintainable code quality.