Loading issues
Spec §5.1–5.4.
PageHeader, Section, MetricCard, Money, Num, When, EntityLink, PlayerHead (with the avatar proxy), RangePicker (lib/range.ts), Segmented, Pager, ExportMenu, AccessGate, SidebarLayout, popover base.ChartFrame, and fix every chart bug: axis clipping, monotone curves, outlier clamping, heatmap width.next/dynamic with sized skeletons./design-system.