Worked on stabilizing multi-monitor user experience in the cjpais/handy repository by addressing overlay positioning issues in complex display setups. Focused on refining UI development and cross-platform system programming using Rust, the work involved correcting overlay placement across monitors with varying DPI scaling factors. This required implementing robust geometry handling and precise scaling calculations to ensure overlays appeared accurately on all connected displays, not just the primary monitor. The solution was validated through targeted tests and manual checks across different DPI configurations, directly reducing user-reported issues and enhancing reliability for power users with advanced multi-monitor workflows in cross-platform environments.