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Jake Howell 8ae732000c feat(site): add UI primitives for the AI settings stack (#25579)
> 🤖 This PR was modified by Coder Agents on behalf of Jake Howell.

Linear: [DEVEX-355](https://linear.app/coder/issue/DEVEX-355)

First PR in a 5-PR stack splitting #25328. Adds the small UI primitives
the AI settings stack depends on.

- `FormField` accepts a `description` prop and renders a required
marker. `aria-describedby` is composed from the description, helper, and
error IDs.
- `PageHeader` title, subtitle, and caption forward `className` and
other intrinsic `h1`/`h2`/`span` props to their root elements.
- `AvatarData` gains an opt-in `truncate` prop that clips overflowing
title and subtitle with an ellipsis. Off by default so existing
consumers passing non-text nodes (icons, badges) do not clip silently.
- Bundles the Vercel provider icon (`vercel.svg`) and registers it in
`icons.json` and `externalImages.ts`.

No new pages or routes here; later PRs in the stack consume these
primitives.

<details>
<summary>Stack</summary>

1. **jakehwll/DEVEX-355/01-primitives, primitives (this PR)**
2. jakehwll/DEVEX-355/02-api, API client and query layer
3. jakehwll/DEVEX-355/03-components, provider form components
4. jakehwll/DEVEX-355/04-pages, pages and routes
5. jakehwll/DEVEX-355/05-section, section reshuffle

Replaces #25328 once the stack lands.
</details>
2026-05-27 02:01:53 +10:00
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