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diagram-design

Create technical and product diagrams — architecture, flowchart, sequence, state machine, ER / data model, timeline, swimlane, quadrant, nested, tree, org chart, layer stack, venn, pyramid — as standalone HTML files with inline SVG. Ships with a neutral editorial skin and a first-run gate that prompts users to customize the style guide (colors, fonts) from their own website before generating. Includes annotation-callout primitive and optional sketchy variant.

skills/swiss-shot-demos/assets/chart-skills/diagram-design/SKILL.md

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Oct 26, 2026
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MIT

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# Diagram Design

Create visual diagrams as self-contained HTML files with inline SVG and CSS, following an opinionated editorial design system.

Fourteen diagram types. One shared design system, complexity budget, and taste gate. Type-specific conventions live in `references/` and are loaded only when you pick a type.

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## 0. First-time setup — style guide gate

**Before generating your first diagram in a new project, verify the style guide has been customized.**

Open [`references/style-guide.md`](references/style-guide.md) and check the default tokens. If they're still the shipped defaults (paper `#faf7f2`, ink `#1c1917`, accent `#b5523a` rust), **pause and ask the user**: