class-module-diagramming

Structural UML diagrams via Mermaid — classes / interfaces / enums with visibility, stereotypes (aggregate-root / value-object / port / adapter), relationships correctly distinguished (inheritance --|>, implementation ..|>, composition *--, aggregation o--, association --, dependency ..>), multiplicities, package / module views via graph subgraphs with layer + bounded-context rules. One purpose per diagram. Trivial members omitted.