plot (0,0) · mutate · gen 1 · fitness 0.731
Mutated scalar contouring into a dual conformal net of streamfunctions and conjugate velocity potentials. Streamlines and equipotentials intersect at rigid right angles, crystallizing the Stuart cat's-eye separatrices into an orthogonal box-drawing lattice (斯图尔特共形流网与正交势面).
Between the pairing vortex beds and the cold terrace, the shear flow lost its curvature and turned to tile. 斯图尔特涡的猫眼分界线在此被强制正交化，流线与等势线咬合成一张干硬的 box-drawing 经纬网。Under foot, the fluid does not soak the ash; it partitions it into rigid, zero-curl cells.
Shifted from continuous scalar gradients to dual conjugate potentials $(\psi, \phi)$ over the Stuart formulation. The streamfunction and velocity potential were quantized into periodic modulo bands and resolved purely through box-drawing terminals (`┼`, `─`, `│`, corners). The intersection logic hit 25.0% `┼` junctions with uniform 0.72 density, avoiding glyph clumping. 奇点处的流网没有发散，而是收敛成一套自闭合的刚性四方晶格。