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diagram-knowledge

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Diagram knowledge base. Provides Mermaid syntax, C4 model, diagram types, and best practices for technical diagrams.

skills/diagram-knowledge/SKILL.md

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# Diagram Knowledge Base

Quick reference for technical diagrams, Mermaid syntax, and C4 model.

## Diagram Types Overview

| Type | Use Case | When to Use |
|------|----------|-------------|
| **C4 Context** | System boundaries | External actors, systems |
| **C4 Container** | Deployable units | Apps, databases, services |
| **C4 Component** | Internal structure | Classes, modules in container |
| **Sequence** | Interactions | Request flows, protocols |
| **Class** | Structure | Domain model, relationships |
| **ER** | Data | Database schema |
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