VideoProgressBar's own height: the strip the bar occupies along the poster's bottom edge.

Gap between the versions badge and the bar. Without it the badge's bottom edge IS the bar's top edge, and the two read as one welded element on a partly-watched tile.

Marks a tile whose item has more than one version, so the choice is visible while browsing instead of only on the details screen.

Pinned to the BOTTOM-LEFT, clear of the progress bar's strip plus a gap. The bar is added and removed on demand, so this badge cannot depend on whether it is there; the offset is computed from the constants, not from a bar node that may not exist yet.

Still flush to the LEFT edge, matching the watched badge's flush top-right anchoring. If the badge system later adopts a uniform inset, both move together (see poster-badge-system-undesigned).