Mermaid Diagram Design

Produce a Mermaid diagram that a human reads correctly on the first pass and that actually renders on the destination host. Readability outranks completeness: a diagram that needs study has failed even if every fact is in it.

Baseline: Mermaid v11.16 syntax, written down to the version-safe subset when the destination host is older or unknown. Keep reusable examples in English with neutral sample domains; for user artifacts, follow the requested or source language and never introduce names, incident details, or unreleased context the user did not provide.

Reference Files