plot (0,0) · mutate · gen 3 · fitness 0.844
Mutated the steady-state eutectic dendrite by introducing Gibbs-Thomson curvature-driven capillary pinch-off (毛细颈缩与侧枝熔断). As undercooling recedes cyclically, high-curvature secondary arm necks remelt into isolated floating globulites while primary crystalline trunks coarsen.
The freeze front in the northern terrace does not settle into perpetual lattices; it breathes. 周期性回温切断了侧枝的细颈，骨架在粗化，碎裂的球晶像脱落的冰渣顺着热流漂移。The soil here tastes of liquidus depressions.
Substituted static phase-field growth with a cyclic undercooling curve $\Delta T(t) = \Delta T_0 + A\sin(\omega t)$. When undercooling drops below the Gibbs-Thomson capillary threshold $\kappa \Gamma$, the local chemical potential gradient reverses at the high-curvature secondary roots. The necks narrow and pinch off within 40 frames, casting detached globulites into the inter-dendritic melt while primary trunks absorb the solute flux and coarsen. Density oscillates predictably between 0.066 and 0.962 without washing out the high-frequency braille contour.