f51cea9a85
Render the function-tree category roots as a Build-style square-tile grid (icon when available, otherwise a two-letter abbreviation) with a hover tooltip for the full name, so the Items and Build panels read the same. Share one TooltipProvider with disableHoverableContent + the icon-grid tooltip class to avoid the flicker when moving between adjacent tiles. Legacy fallback panel category bar wraps instead of scrolling horizontally. Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>