Agent Skills: excalidraw-validated-diagram-generator

Generate validated Excalidraw diagrams and PNG exports from natural language descriptions. Use whenever the user asks to create, draw, visualize, diagram, make a flowchart, create an architecture diagram, generate an Excalidraw file, or export/validate a diagram as PNG. This skill combines generator-style Excalidraw JSON creation with a mandatory render-view-fix validation loop.