The uploaded piece images were heavily outlined old-style art; they are
backed up to docs/branding-backup-2026-10-19-chess-pieces.json and cleared
in platform_assets, so every board draws the flat Night Arcade pieces.
White pieces get a thin mid-grey edge and a silver lip to read on the
light squares. tools/shoot.mjs --drop-assets previews the built-in art.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>