Web Device layout component · ARC 2.0.0-beta.28

`content-card`

Web Device layout component `content-card`: purpose, boundaries, author entry, evidence, and sample honesty.

Web Device layout component — not an AUP primitive; not an AUP Web-only widget; not a Markdown directive.

Default-theme package: providers/runtime/web-device/themes/default/components/content-card/ (manifest.json + render.js). Resolved through the layout component chain (runtime surface → theme → optional site override).

Purpose

Card list for blog posts, news, and similar content items on layout surfaces.

Boundaries

Do not call this an AUP primitive or put it under docs/aup/primitives/.
Do not mix multiple layout components' contracts on this page.
Manifest props are the author-facing contract; invented props are not portable.
Site override exists: site content-card may replace files from this theme package.

Author entry

layout.aup section · component … component=content-card

Common author-facing props (from manifest): title, headingLevel, itemHeadingLevel, description, eyebrow, items, basePath, variant, readMoreHref, emptyText

Surfaces

layout (and narrow where the theme supports it). Not the document Markdown directive surface.

Public status

released

Fallback

Empty items → emptyText line (or nothing if emptyText is empty).

Sample

No isolated docs-safe live mock on this page. The contract is proven by site pages that mount this unit in layout.aup (or the docs shell). Copy author source from the evidence paths; do not invent props beyond the target manifest.json.

Evidence

Item	Path
Theme package	`providers/runtime/web-device/themes/default/components/content-card/`
Manifest	`…/content-card/manifest.json`
Renderer	`…/content-card/render.js`
Internal matrix	`docs/aup/capability-matrix.md` §3 (internal, non-routed)
Matrix row concept	layout-component · `content-card`

Notes

This site may override via .web/components/content-card/. See the site override page for this name.