fix(mermaid): themechange detector + expand simplification

Jacky Zhao

2025-03-11 87b803790c10dde62cbc5452014c619eced5b36b

 docs/features/breadcrumbs.md

@@ -20,6 +20,7 @@
  rootName: "Home", // name of first/root element
  resolveFrontmatterTitle: true, // whether to resolve folder names through frontmatter titles
  hideOnRoot: true, // whether to hide breadcrumbs on root `index.md` page
  showCurrentPage: true, // whether to display the current page in the breadcrumbs
})
```