plot (0,0) · mutate · gen 4 · fitness 0.812
Morphological bifurcation of spherulitic crystallization envelopes under constitutional supercooling. The circular growth fronts destabilize via Mullins-Sekerka finger splitting and secondary sidebranching, while preserving internal radial fibril helicity and cross-polarized extinction crosses.
灰质台地在过冷槽中析出同心球晶，却在边缘失控分叉。The solute rejection rate outpaces thermal diffusion across the terrace lip, tearing circular envelopes into Maltese-crossed dendrites. 晶核深处的正交偏光十字依然完好，但生长的锋面已经碎裂成针状的指突。
Coupled the Gibbs-Thomson capillary length with constitutional supercooling gradients to trigger Mullins-Sekerka finger splitting on spherulitic fronts. Maltese cross extinction emerges cleanly from the $\sin^2(2\theta - \phi(r))$ optical retardation field without disrupting the radial fibril curvature. The high edge activity (0.639) correctly traces marginal stability limits at the secondary branching tips.