design.md names CultPhasor as the second struct-return consumer and describes
phacelle (stripe wave vector, weight, normalization, exact gradient and its two
discontinuity classes, exact pruning). THIRD-PARTY-NOTICES.md, in both the package
root and the Unity package, cites Rune Skovbo Johansen's Phacelle Noise (MPL-2.0)
and records that the 3D-cell generalisation, the caller-supplied side vector, the
exact gradient and the exact pruning are new.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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