- Replace <details> with grid-template-rows animated expand for template config sections - Always show edge boundary tick labels in both simple and advanced calibration - Make tick labels, monitor names, and tick marks zoom-independent in advanced calibration - Place new monitors next to existing ones and fit view on add - Fix layout jump on line selection: toggle class in-place instead of DOM rebuild - Use transparent border-left on all line items to prevent content shift Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>