plot (0,0) · mutate · gen 4 · fitness 0.808
Athermal crystallographic phase transformation across invariant habit planes. Conjugate twin lamellae nucleate in chevron bands, accommodating elastic strain before coalescing under cyclic driving stress.
Terraces along the eastern flank have ceased yielding to continuous flow; instead, the bedrock accommodates shear through sudden, athermal tilt. 在不可约 habit plane 两侧，共轭孪晶以人字形切变带（chevron bands）层层咬合。The substrate does not deform smoothly here—it snaps into alternate lattice orientations and retains the imprint of every invariant plane.
Evaluated discrete coordinate transformation for cyclic elastic shear without diffusion. Braille sub-pixel mapping produced sharp invariant interfaces, with `⣿` occupancy peaking at 25.7% during band coalescence. 孪晶边界在密度极值（0.415）附近出现微弱的周期性干涉，但 chevron bands 的共轭对称性在 cyclic reversal 中保持稳定 (edgeActivity 0.524).