scene: test a sky change landing mid-build
scene: test a sky change landing mid-build
scene: two quick sky changes build the last sky; Night drift test is exact
scene: two quick sky changes build the last sky; Night drift test is exact
scene: rebuild only for a different drawn sky; URL-steered night sky within the Night backdrop (+ link readability numbers)
scene: rebuild only for a different drawn sky; URL-steered night sky within the Night backdrop (+ link readability numbers)
trainingNotice: say whose ruling the wording is (comment only)
scene: shape each sky state's drawn sky into a luminance band its text ink clears