Web Device layout component · ARC 2.0.0-beta.28

`post-hero`

Web Device layout component `post-hero`: 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/post-hero/ (manifest.json + render.js). Resolved through the layout component chain (runtime surface → theme → optional site override).

Purpose

Blog/post header with cover, title, author, date, and tags.

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.

Author entry

layout.aup

Common author-facing props (from manifest): title, date, author, readingTime, tags, coverImage, coverAlt, slug, contentType, eyebrow, eyebrowHref

Surfaces

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

Public status

released

Fallback

Missing media → no media block.

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/post-hero/`
Manifest	`…/post-hero/manifest.json`
Renderer	`…/post-hero/render.js`
Internal matrix	`docs/aup/capability-matrix.md` §3 (internal, non-routed)
Matrix row concept	layout-component · `post-hero`

Notes

Object detail hero for articles.