The tile list in the tilemap section is a palette of pictures: each tile shows its lone tile (the four convex corners for floor and wall, the picture itself for none) with its name below, laid out with the image-picker grid (#139)

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/core/model/autotile.ts

@@ -118,6 +118,14 @@ const NO_NEIGHBOURS: Neighbours = {
   nw: false,
 };
 
+/**
+ * The tile standing for its kind in a palette (#139): the lone tile, all four convex corners. It is
+ * the one RPG Maker shows too – the block's top-left tile, which is pixel for pixel the same.
+ */
+export function loneTileQuadrants(kind: TileKind): TileQuadrants {
+  return tileQuadrants(kind, NO_NEIGHBOURS);
+}
+
 const SIDES = ['n', 'e', 's', 'w'] as const;
 const DIAGONALS = ['ne', 'se', 'sw', 'nw'] as const;