Petr Falkovsky worked on the team113/messenger repository, focusing on UI simplification and asset management for audio controls. He removed deprecated positioning logic by eliminating the CallButtonsPosition enum and associated SVG assets, streamlining both the codebase and user settings. Petr refactored related UI components and redesigned media panel icons, introducing new SVG assets to clearly represent headphones and earpiece audio modes. Using Dart and SVG, he reduced technical debt and maintenance overhead while improving state management and visual clarity. His work established a cleaner foundation for future UX improvements, with clear commit traceability supporting audits and potential rollbacks as needed.