Diagram Design — ChatGPT plugin skill package

This is a focused Agent Plugins package adapted from cathrynlavery/diagram-design, which is distributed under the MIT License.

The package contains a diagram-design skill with type selection, editorial layout principles, accessibility checks, brand onboarding guidance, import/redraw workflow, and quality gates. It does not port the upstream repository's complete example gallery, Python import/export scripts, slash commands, or client-specific marketplace integrations into executable ChatGPT tools.

Upstream source: https://github.com/cathrynlavery/diagram-design Upstream license: MIT; see https://github.com/cathrynlavery/diagram-design/blob/main/LICENSE