The showcase illustration was a single light PNG, so it stayed a white slab on GitHub's dark themes. Redraw it as a light and a dark SVG, and swap the linked image in README.md and all 21 translations for a <picture> with a prefers-color-scheme: dark source. Alt text and link targets are unchanged. The PNG is deleted because nothing else uses it. website/figures.md notes the pair. 🤖 Generated with Claude Code (Sonnet 5.5) 🦊 Co-authored-by: Claude Sonnet 5.5 <noreply@anthropic.com>