Dependency-free ES module: light({time,lat,lon,cloud_cover,precipitation})
-> {elevation, direct, diffuse, wetness}, linear RGB. Constants that were
tuned by eye are labelled EYEBALLED. Fixed-moment tests in
sun.node-test.js (plain node, not collected by vitest).
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
