April 2026 (Month: 2026-04) focused on enhancing the On-Screen Controller (OSC) UI in mpv. Key delivery: configurable widths for the Box and Slimbox layouts, enabling flexible UI density and better device fit. Implemented new script options (boxwidth and slimboxwidth) and ensured width values are preserved across both layouts. Documentation was updated to reflect default values and the new options, improving discoverability and ease of use. This work is backed by a single commit that adds the width options and related docs, and maintains backward compatibility with existing configurations. Business value: improved UX flexibility for users and better adaptability across form factors, with solid Lua scripting and configuration management skills demonstrated. No major bugs fixed this month beyond standard refinements.