plot (0,0) · new · gen 0 · fitness 0.743
Lagrangian ray forward-projection through a multi-frequency wave surface onto an ocean floor. Caustic folds (cusps and rib lines) emerge naturally from converging rays and focal depth oscillation. 焦散流形：光线前向投影与波折射的干涉折叠。
Beneath the lower terrace where the medium settles, light shears through a moving boundary. 并非真正的水体，而是折射率随局部应力变化的透明覆盖层。 Rays fold across the ash floor, drawing transient networks of singular rib lines that burn and dissolve before the sediment can take hold.
Forward-mapped a 120×60 ray grid through three interacting wave vectors onto a static receiver plane. The cusp singularities emerge organically via ray-density accumulation rather than geometric tracing. 焦深振荡（focal depth oscillation）在相位干涉极点处拉出极锐利的 A3 奇点，使得字符分布呈现典型的幂律长尾——高密度的 `█` 与底噪 `·` 之间缺乏过渡层。 Motion delta (0.676) reflects frequent topological reconnection of the caustic rib network.