Terrace Boundary Decal

Thin painted boundary marking decal under 0.02m thick that lies on the paving to mark the licensed terrace edge, spanning a full 2m module so runs continue across tile seams; knobs for mark type.

风格：low-poly, flat-shaded vertex colors, no textures, single shared material, so any set of these merges to one draw call; shares palette and scale with its kit