The MART tileset shares the Center's atlas but not its pins, so marts
were raw detector output: 32px walls, the racks fused into one deep
monolith, the clerk booth a 48px slab. Pinned like the references --
16px wall band with the built-in cases, bookcase-collapsed racks,
half-cell counter with the poster on top, register standing on it.
The cliff drawing's dark east slope ($02/$24/$34) broke the repeat scan
at its corners and rose to 32px towers; a folded doorway column read
its own drawn extent and towered a block over the 16px mound around
Diglett's Cave. The slope chain is pinned to one 16px course, and a
doorway column now takes height AND top from its region: roofed among
drawn facades (houses), flat among flat repeats (the mound). Adds the
voxel_mound_probe driver that prints per-column detector decisions.
Flowers stand as 1px animated cutouts on their own pulled mesh (own-cell
flowers hide behind the walker, the cell south still overdraws feet).
Cuttable bushes, gym statues (single-block plinth) and Lt. Surge's trash
cans stand as 5-voxel prop cutouts; prop_ground names the tile painted
beneath. Block edits refresh meshes in place instead of blinking to 2D.