mermaid-diagramslisted

# Mermaid Diagramming Create professional software diagrams using Mermaid's text-based syntax. Mermaid renders diagrams from simple text definitions, making diagrams version-controllable, easy to update, and maintainable alongside code. ## Core Syntax Structure All Mermaid diagrams follow this pattern: ```mermaid diagramType definition content ``` **Key principles:** - First line declares diagram type (e.g., `classDiagram`, `sequenceDiagram`, `flowchart`) - Use `%%` for comments - Line breaks and indentation improve readability but aren't required - Unknown words break diagrams; parameters fail silently ## Diagram Type Selection Guide **Choose the right diagram type:** 1. **Class Diagrams** - Domain modeling, OOP design, entity relationships - Domain-driven design documentation - Object-oriented class structures - Entity relationships and dependencies 2. **Sequence Diagrams** - Temporal interactions, message flows - API request/response flows - User authentication flows - System component interactions - Method call sequences 3. **Flowcharts** - Processes, algorithms, decision trees - User journeys and workflows - Business processes - Algorithm logic - Deployment pipelines 4. **Entity Relationship Diagrams (ERD)** - Database schemas - Table relationships - Data modeling - Schema design 5. **C4 Diagrams** - Software architecture at multiple levels - System Context (systems and users) - Container (applications, databa