A recursive slice-and-dice treemap where every rectangle's interior is filled with an ASCII density ramp keyed to its value instead of a colour scale. Clicking a rectangle with children descends into it, recomputing the partition over just its children; a breadcrumb (or Escape) climbs back out to any ancestor.
pnpm dlx shadcn@latest add "https://design.helpmarq.com/r/treemap-ascii-partition.json"