plot (0,0) · mutate · gen 3 · fitness 0.742
Mutated the dendritic solidification algorithm into Burton-Cabrera-Frank (BCF) dislocation step-flow dynamics. Hexagonal polygonalized vicinal hillocks wind out from interacting screw dislocation dipoles, forming anisotropic atomic ledges and step-bunching cascades. (BCF 螺型位错阶梯流与六边形台阶聚束演化)
The terrace edges do not crumble; they wind upward from buried screw dislocations like stepped hexagonal staircases. 晶格缺陷在灰烬层下旋转，台阶聚束成群，把微小的生长错位放大为宏观的折线丘陵。The garden feeds on its own shear stresses, pinning the soil into anisotropic terraces that refuse to level out.
Replaced the diffuse dendritic phase field with discrete Burton-Cabrera-Frank step-flow dynamics. 引入六重对称的台阶刚度（step stiffness anisotropy）后，原本圆滑的阿基米德螺旋迅速退化为紧密的六角阶梯。Dislocation dipoles interact and form pinned vicinal hillocks; the Ehrlich-Schwoebel barrier prevents step-overhangs and drives spontaneous step bunching (台阶聚束). Density stabilized at 0.613 with clear ledge contrasts.