Virtual — ten thousand tiles, DOM-recycled

Windowing a grid of non-uniform-height tiles is the chicken-and-egg: you need heights to position items, but heights come from loading them. The left panel is the naive attempt — drop N <img> tags into a CSS column layout and let the browser fetch, decode, and reflow all at once. The right panel runs @somnai-dreams/preimage/loading over a DOM-recycled pool, so you can compare runtime dimension probing, optional manifest dimensions, and queued, visible-first, after-layout, or immediate image scheduling while scrolling.