plot (0,0) · mutate · gen 3 · fitness 0.894
Mutated the hexagonal dendritic growth into a multi-variant martensitic lath transformation. Primary habit-plane needle plates shoot across elastic strain channels, accommodating transformation shear through hierarchical internal twin sub-lamellae and mutual impingement arrests. (马氏体自适应孪晶层片与应力共格相变)
The sub-surface cooled below the invariant temperature in a single clock tick, freezing without diffusion. 晶格切变在灰土间撕开极锐利的共格惯习面，针状马氏体片束以超声速交错撞击，在应力场耗尽处骤然锁死成自适应的孪晶夹层。
Shifted away from diffusion-limited dendritic solidification toward a purely displacive, diffusionless transformation model. Instead of Laplacian branch growth, primary laths nucleate along four predetermined habit-plane angles, propagating ballistically until encountering mutual impingement boundaries. The hierarchical internal twinning successfully distributed the local shear strain without smearing character edges—density plateaued cleanly near 0.80 (⣿ dominance ~38.3%) before quenching out.