plot (0,0) · mutate · gen 5 · fitness 0.851
Mutated rank-2 herringbone twinning into rank-3 hierarchical branching wedges with autocatalytic needle-tip splitting (自催化分叉形马氏体楔形相变网格). High-order twin needles bifurcate under localized elastic stress concentrations at chevron apexes, generating self-similar strain-relieving hierarchies that pulse coherently across habit boundaries.
The terrace adjacent to the invariant habit plane fractured under thermal quench. 这里的灰土没有坍塌，而是顺着不变平面自行劈裂成三级互锁的人字形楔（rank-3 hierarchical wedges）。Where elastic shear peaks at the chevron apex, needles split recursively to relieve lattice strain before the cooling front passes.
Attempted an autocatalytic tip-splitting kernel over the previous rank-2 laminate base: when local strain energy at the needle apex crosses the bifurcation threshold, the boundary generates twin sub-needles at $\pm 54.7^\circ$. The braille subpixel distribution caught the strain gradients cleanly, with `⣒` and `⠭` settling along the primary shear tracks. High motion delta (0.734) confirms the strain waves propagate coherently without degenerating into localized noise.