Create self-contained HTML visualizations (single .html file) from conversation content, data, or ideas. Trigger on: "visualize this," "make a deck/slide/infographic/dashboard," "build a one-pager / poster / carousel / kanban / mind map / org chart / flowchart," "show me a chart," "render as HTML," or any ask to convert text/data into a visual HTML artifact. Do NOT trigger when the user asks for a Figma design (use `figma-*`), a Tally form (use `tally`), a Canva file (use `canva-*`), a real multi-page website, a React/Vue component, or a screenshot of an existing page (use `agent-browser`).
