Summary for 2026-05: Implemented a critical UI polish fix in the brightness control UX for basecamp/omarchy by stabilizing the OSD popup width. The fix ensures the popup width remains constant across all percentage values, removing visual jumps during brightness adjustments and aligning the rendered text with the JetBrainsMono monospace label. This work completes the end-to-end width consistency by padding percent text to a fixed width (e.g., " 5%", " 50%", "100%") using printf, and builds on the prior step that made the percentage values themselves increment uniformly (#5525). The deliverable reduces user distraction, improves perceived reliability of the brightness control, and supports a cohesive design system across UX elements.