The erosion weight 4a(1-a) was 0.84 in dense cloud (a = 0.7), so one low base-octave detail cell
(~5 degrees) cut a round hole in the mass, and the detail's mean (0.573, not 0.5) lifted the
plateau around it: a hard ring near the sun, rimmed by the silver lining. Erosion is now centred
on the detail's mean and weighted 6.75a(1-a)^2 (thin edges keep the cauliflower, dense cores
keep their shape); thin cloud is not self-shadowed, and the silver lining reads a wider
footprint ahead and is capped. Cloud behind the glow is a diffuse brightening again.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
