Sunlit Leaded Window
A leaded-glass window in a dark stone hall lives only where the sun touches it: a moving band of light wakes each lancet in turn, throws coloured light onto the flagstone floor and gilds the carved title, then dusk falls and one pane keeps its own warm glow.
How it works
create.mjs validates the brief and emits a self-contained HyperFrames project
render.mjs lints the scene, renders the film and muxes a synthesised cue track
Scrub the film: check each pane ignition, the floor patch colour, dusk and the end card