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Diagram Design 2.0 introduces the Loop: flywheels with a shared-memory hub. Semantic system patterns describe behavior separately from layout, so a queue, policy trace or trust boundary can reuse the nearest existing type without expanding the type count.

Diagram Design 1.0 is here: an agent skill for Claude Code, Codex and Pi that produces editorial-quality diagrams. Twenty-eight visual types, each in three static variants, matched to your brand in 60 seconds.