Docs: Use Callout prompt variant for AI-prompt callouts

[Sidnioulz]

Closes #

What I did

Converted the two remaining AI-prompt callouts to the Callout component's prompt variant:

• docs/index.mdx
• docs/get-started/install.mdx

Both previously reproduced the prompt-callout look by hand with variant="info" icon="🤖". The prompt variant provides that treatment, including its own WandIcon, so the explicit icon is removed. docs/addons/addon-migration-guide.mdx already uses the variant.

No copy, link, or analytics event changed — the prompt text and the PromptInstallCopy event are untouched.

Checklist for Contributors

Testing

The changes in this PR are covered in the following automated tests:

• stories
• unit tests
• integration tests
• end-to-end tests

Manual testing

1. Open the docs landing page (/docs) and the install page (/docs/get-started/install).
2. Confirm each page still shows the AI-prompt callout with its Copy prompt button, now rendered with the prompt variant's wand icon.
3. Click Copy prompt and confirm the clipboard contains: Set up Storybook for me with npm create storybook@latest and follow its instructions precisely

Documentation

• Add or update documentation reflecting your changes
• If you are deprecating/removing a feature, make sure to update
  MIGRATION.MD

Checklist for Maintainers

• When this PR is ready for testing, make sure to add ci:normal, ci:merged or ci:daily GH label to it to run a specific set of sandboxes. The particular set of sandboxes can be found in code/lib/cli-storybook/src/sandbox-templates.ts

• Declare whether manual QA will be needed for this PR during the next release, through qa:needed or qa:skip

• Make sure this PR contains one of the labels below:

  Available labels

  • bug: Internal changes that fixes incorrect behavior.
  • maintenance: User-facing maintenance tasks.
  • dependencies: Upgrading (sometimes downgrading) dependencies.
  • build: Internal-facing build tooling & test updates. Will not show up in release changelog.
  • cleanup: Minor cleanup style change. Will not show up in release changelog.
  • documentation: Documentation only changes. Will not show up in release changelog.
  • feature request: Introducing a new feature.
  • BREAKING CHANGE: Changes that break compatibility in some way with current major version.
  • other: Changes that don't fit in the above categories.

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https://claude.ai/code/session_01Aw4P3WHXbXzKeawmdjJqBE

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ℹ️ Recent review info

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Configuration used: Organization UI

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📥 Commits

Reviewing files that changed from the base of the PR and between 5370402 and 8df3b23.

📒 Files selected for processing (2)

• docs/get-started/install.mdx
• docs/index.mdx

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Walkthrough

Both installation callouts now use the prompt variant. The robot icon is removed. The prompt-copy action and content remain unchanged.

Changes

Installation callouts

Layer / File(s)	Summary
Update installation callouts docs/get-started/install.mdx, docs/index.mdx	Both installation callouts use the prompt variant and no longer specify the robot icon.

Priority: ⬇️ Low

Merge Risk: ⚪ Minimal · up to 8df3b

Both installation callouts now use the intended prompt presentation without changing their content or actions.

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