Document Anchor component

[devin-ai-integration]

Document Anchor component

Summary

Adds documentation for a new <Anchor /> MDX component that creates custom anchor points inside content. The docs explain usage, the required id prop, and include rendered/markdown examples showing how to wrap tables and code blocks. The component page is linked in the Component Library navigation.

Changes:

• New page: fern/products/docs/pages/component-library/default-components/anchor.mdx
• Navigation: Added "Anchor" entry under Component Library > Default Components with link icon

Review & Testing Checklist for Human

3 items

• Verify that <Anchor /> is available in the docs runtime (MDX component registry) and renders without the "Unsupported JSX tag" fallback. If the component isn't yet in fern-platform's MDX components, this page will not render correctly—coordinate merge order accordingly.
• Run the docs locally (fern docs dev) and navigate to Component Library → Default Components → Anchor. Confirm:
  • The examples render correctly (table wrapped in Anchor, code block wrapped in Anchor)
  • Clicking links to #api-endpoints and #example-code scrolls to the corresponding anchored content sections
  • The component works for non-heading content, and headings continue to have their default auto-generated anchors
• Check navigation placement and icon: Ensure the "Anchor" page appears in the Components list alphabetically and the fa-link icon looks correct alongside other entries

Recommended test plan:

1. Pull this branch and run: fern docs dev
2. Visit http://localhost:3000 and open the Anchor page via: Writing content → Components → Anchor
3. Validate the examples:
   • Click the API endpoints table and authentication code example links jump to the correct blocks
   • Confirm anchor hash updates in the URL and deep-linking works after reload
4. Optional: Try adding a custom Anchor with a unique id on a local page to ensure no id collisions and proper scroll behavior

Notes

• Headings already generate anchors automatically; this component is intended for non-heading content blocks (tables, code, paragraphs, etc.)
• Navigation order and icon are chosen to match surrounding entries but can be adjusted if there's a preferred ordering
• Link to Devin run: https://app.devin.ai/sessions/45790404d0aa4e1aab037d58b7ed30b7
• Requested by: Catherine Deskur ([email protected])

[devin-ai-integration]

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