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    Class CreateMermaidDiagramAction

    Action that generates SVG diagrams from Mermaid text syntax. Supports flowcharts, sequence diagrams, ER diagrams, class diagrams, state machines, Gantt charts, and more.

    Mermaid is a text-based diagram generation tool that converts markdown-like syntax into rich visual diagrams. This action uses the Mermaid library to render diagrams server-side as SVG, suitable for embedding in reports, artifacts, and AI-generated content.

    // Flowchart
    await runAction({
      ActionName: 'Create Mermaid Diagram',
      Params: [
        { Name: 'Code', Value: `flowchart TD
          A[Start] --> B[Process]
          B --> C{Decision}
          C -->|Yes| D[End]
          C -->|No| A` },
        { Name: 'Theme', Value: 'default' }
      ]
    });

    // Sequence Diagram
    await runAction({
      ActionName: 'Create Mermaid Diagram',
      Params: [
        { Name: 'Code', Value: `sequenceDiagram
          Client->>Server: Request
          Server->>Database: Query
          Database-->>Server: Results
          Server-->>Client: Response` },
        { Name: 'Theme', Value: 'dark' }
      ]
    });

    // ER Diagram
    await runAction({
      ActionName: 'Create Mermaid Diagram',
      Params: [
        { Name: 'Code', Value: `erDiagram
          USER ||--o{ ORDER : places
          ORDER ||--|{ LINE-ITEM : contains` },
        { Name: 'Theme', Value: 'forest' }
      ]
    });

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    AuthorizesCaller

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    InternalRunAction Run

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    AuthorizesCaller: boolean

    True when the action authorizes its caller itself, so a public entry point such as the RunAction mutation may run it for an authenticated user without an MJ: Action Authorizations link. Set it only on an action that either checks an authorization the caller must hold, or reads and writes only with the caller's own permissions. Leave it false for an action that acts with more authority than its caller, or that reaches data or sends messages the caller chooses but could not otherwise reach.

    The engine reads the marker only from the class that runs, never from its parent classes. A subclass that overrides a marked action must declare the marker again.

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