#437Subdivision Quad-Tree Stamp

The tile is recursively quad-tree subdivided: each level hashes a cell to decide whether to split into four or stop, and every leaf — big or tiny — is stamped with the same word scaled to its size. Because the split is hashed per cell the partition is irregular, never a uniform grid. The maximum depth pulses over time so regions bloom finer and coarser, and the instant a cell reaches the deepest allowed level the whole field flashes bright. The pointer draws finer detail toward the cursor, a press shatters everything to full depth, and scrolling reshuffles the entire subdivision.