Agent Skills: diagramming

Create technical diagrams using Mermaid syntax for architecture, sequences, ERDs, flowcharts, and state machines. Use for visualizing system design, data flows, and processes. Triggers: diagram, diagrams, mermaid, plantuml, draw.io, excalidraw, flowchart, sequence diagram, class diagram, architecture diagram, ERD, entity relationship, entity-relationship, C4, C4 model, system context, container diagram, component diagram, state diagram, state machine, visualize, draw, chart, flow, data flow, API flow, system design, architecture visualization, UML.