d3-visualization Curated from @jiannanya. What it does Teaches the agent to produce D3 charts and interactive data visualizations. A comprehensive D3.js skill with examples across chart types and techniques giving the agent expert-level knowledge to generate complex, interactive visualizations. Useful for editorial dashboards, reports, data-rich prototypes, and explanatory graphics. Source - Upstream: https://github.com/jiannanya/snow-d3/ - Category: How to use This catalogue entry advertises the skill in OpenDesign so the agent discovers it during planning. To run the full upstream workflow…