Geometry type this entry describes.
Hero-card title, e.g. VISIBLE POINTS.
DOM data-field id of the card's value cell (-sub for its subtitle).
STABLE: the incremental patcher queries these, and tabs/overview.ts
treats their absence as "structure not painted yet, rebuild".
Short unit noun for the compact badge, e.g. pts.
Element noun for prose (tooltips), e.g. line segments.
Elements of this type currently on screen.
Elements of this type across the whole dataset.
One geometry type's headline count, resolved against a
GlobalStatstick.