Avatar block with name, description, and image. Accepts either a focused Avatar Item (avatar-item@1, primary) or a full Author (author@1) as its Sitecore datasource via the compatible-datasources pattern; a sibling adapter normalises either field shape (flat or nested linked-item) into the component's props. Corner shape follows the theme's --avatar-radius token (round by default; themes can set 0 for square).

• src/components/registry/components/ui/avatar-block.tsx→components/registry/components/ui/avatar-block.tsx
• src/components/registry/components/ui/avatar-block.sitecore.ts→components/registry/components/ui/avatar-block.sitecore.ts
• src/components/registry/components/ui/avatar-block.recipe.ts→src/recipes/avatar-block.recipe.ts