DESIGN/explorations/board-backgrounds: working material, not a numbered
design doc — the app side of background images is settled, so the
deliverable is purely artwork. The model is base layer × filler layer,
swept across hue strategy, HSB family, filler shape, density, placement
and opacity; the gallery is one self-contained HTML generator, every
swatch procedural SVG off a seeded PRNG so swatch IDs stay stable
references across reloads. Status: first sweep published, awaiting review.
Claude-Session: https://claude.ai/code/session_014PtZdPwqZuqEDLc6wZMtEy
