Agent Skills: cognitive-design

Use when designing visual interfaces, data visualizations, educational content, or presentations and need to ground decisions in cognitive psychology principles — perception, attention, memory, Gestalt grouping, and visual encoding hierarchy. Invoke when user mentions cognitive load, visual hierarchy, working memory, preattentive processing, Gestalt principles, encoding hierarchy, cognitive design pyramid, or needs to understand WHY certain designs work. For design evaluation, use `design-evaluation-audit`. For fallacy prevention, use `cognitive-fallacies-guard`. For data storytelling, use `visual-storytelling-design`.