Parity — UV maps & spherical dir
Three bands (bottom→top): uvToSkyViewLutParams, skyViewLutParamsToUv, getSphericalDir. This also exercises the two mechanisms the leaf test didn't: single-source (each wrapper is wgslFn(CHUNK) importing the core string) and includes (the Sky-View maps pull the sub-UV helper through the includes array).
Green = value (liveness). Red = |WGSL − TSL| × 500. Correct = green gradients, zero red.
running…