The parity section states the enclosure rule, restores that the evaluator concatenates
CultMath.Phacelle.glsl for the phacelle family, and names CultLib's browser-pane run
(follow-up gpu-snoise-parity) as that evaluator. The frustum-ball bound no longer assumes
a correctly rounded GLSL sqrt: proven for C# and HLSL, measured on GLSL.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>