fix: minor mdx component arrangement and type fix

[ovflowd]

This PR is a minor update to correct a missing mdx type package; organize some exports correctly and some minor memoization.

[vercel]

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Name	Status	Preview	Updated (UTC)
nodejs-org	✅ Ready (Inspect)	Visit Preview	Jul 29, 2025 10:41am

[Copilot]

Pull Request Overview

This PR improves MDX component organization and adds type safety by adding the missing @types/mdx package, reorganizing component exports between client and server MDX configurations, and implementing memoization for performance optimization in the CodeTabs component.

• Adds @types/mdx package and TypeScript configuration for better MDX type checking
• Moves shared components (Button, Link, LinkWithArrow) from client-side to server-side MDX configuration
• Optimizes CodeTabs component with useMemo to prevent unnecessary recalculations

Reviewed Changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
packages/ui-components/src/MDX/CodeTabs.tsx	Adds memoization for tabs and languages calculation and reorganizes variable placement
apps/site/tsconfig.json	Enables MDX type checking configuration
apps/site/package.json	Adds @types/mdx dependency for TypeScript support
apps/site/next.mdx.use.mjs	Adds Button, Link, and LinkWithArrow components to server-side MDX configuration
apps/site/next.mdx.use.client.mjs	Removes Button, Link, and LinkWithArrow components from client-side configuration

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.99%. Comparing base (c39cd36) to head (d43e791).
⚠️ Report is 3 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8041      +/-   ##
==========================================
- Coverage   73.02%   72.99%   -0.04%     
==========================================
  Files          95       95              
  Lines        8324     8324              
  Branches      214      215       +1     
==========================================
- Hits         6079     6076       -3     
- Misses       2244     2247       +3     
  Partials        1        1              

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[MattIPv4]

Agree with Copilot, otherwise, lgtm

[github-actions]

Lighthouse Results

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/en/about	🟢 100	🟢 97	🟢 100	🟠 88	🔗
/en/about/previous-releases	🟢 98	🟢 93	🟢 100	🟠 89	🔗
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