nx_atmsky_gate.nx

nx_atmsky_gate.nx -- THE SKY IS BLUE BECAUSE OF LAMBDA^-4, NOT BECAUSE SOMEONE PICKED 70/130/240. WHAT THIS EXISTS TO STOP. nx_atmosphere has cited rayleigh_1871, preetham_1999 and hosek_wilkie_2012 in its header since 2026-05-16, and its coefficient comment says "1/lambda^4 wavelength dep" -- while nx_atmosphere_rayleigh_q14 returned ONE SCALAR PER BODY (no wavelength dependence is expressible in a scalar) and the sky colour came from a hardcoded per-body palette. ★A CAPABILITY IS WHAT ITS CODE DOES, NEVER WHAT ITS HEADER CLAIMS -- and this organ was ALSO never built and had ZERO importers (ABSENT-PROVEN), so nothing in the estate could have noticed. THE LOAD-BEARING TOOTH IS THE WAVELENGTH SWAP. Every other tooth here would pass just as happily for a painted gradient that happened to be blue. Only deriving the colour from lambda and then CHANGING lambda proves the physics is doing the work: swap red's wavelength below blue's and the sky must stop being blue. A palette cannot do that. license_tier: ORIGINAL No hw writes (Rule 26). expect_exit: 0