⚡ Bolt: [성능 개선] skip-link 애니메이션 최적화

[seonghobae]

💡 What

.skip-link 요소의 포커스 전환 애니메이션을 top 속성 변경에서 transform: translateY()를 사용하도록 수정했습니다.

🎯 Why

CSS top, left, margin 등 레이아웃 속성을 애니메이션하면 매 프레임마다 브라우저가 레이아웃 재계산(reflow)을 수행해야 하므로 메인 스레드 비용이 크고 레이아웃 스래싱이 발생합니다. 반면 transform은 컴포지터 전용(compositor-only) 속성이므로 GPU 가속을 통해 메인 스레드 개입 없이 부드럽게 렌더링됩니다.

📊 Impact

• 포커스 전환 시 메인 스레드의 레이아웃 재계산(reflow) 오버헤드를 0ms로 감소시킵니다.
• 저사양 디바이스에서 스크린 리더 및 키보드 내비게이션 사용 시 UI 반응성이 향상됩니다.

🔬 Measurement

개발자 도구 성능 탭(Performance Tab)에서 요소를 포커스할 때 렌더링 중 Layout 이벤트가 더 이상 발생하지 않음을 확인할 수 있습니다.

---

PR created automatically by Jules for task 12801611312330592277 started by @seonghobae

[google-labs-jules]

👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down.

I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job!

For more direct control, you can switch me to Reactive Mode. When this mode is on, I will only act on comments where you specifically mention me with @jules. You can find this option in the Pull Request section of your global Jules UI settings. You can always switch back!

New to Jules? Learn more at jules.google/docs.

---

For security, I will only act on instructions from the user who triggered this task.

[coderabbitai]

Warning

Review limit reached

@seonghobae, you've reached your PR review limit, so we couldn't start this review.

Next review available in: 14 minutes

Enable usage-based reviews in Billing to review now. Otherwise, wait until the next included review is available.
You're only billed for reviews past your plan's rate limits ($0.25/file).

How can I continue?

After more reviews become available, a review can be triggered using the @coderabbitai review command as a PR comment. Alternatively, push new commits to this PR.

To avoid repeated limits, reduce automatic review volume by pausing incremental auto-reviews earlier, using label-based review opt-in, excluding WIP or generated PR titles, or requesting reviews manually when the PR is ready. If your team needs uninterrupted high-volume reviews, an organization admin can enable usage-based reviews.

How do review limits work?

CodeRabbit enforces per-developer PR review limits for each organization. Most developers receive the normal plan review availability.

For paid Pro and Pro+ PR reviews, CodeRabbit uses adaptive limits for sustained high-volume activity. When a developer's recent PR review activity reaches the 95th percentile or higher among CodeRabbit users, additional reviews become available more gradually as earlier reviews age out of the rolling window.

Please refer docs for additional details.

Review details

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 8b59ce72-8d4d-4d14-8fa1-a5e348be84eb

📥 Commits

Reviewing files that changed from the base of the PR and between 4a0fcc6 and 36e2b7f.

📒 Files selected for processing (3)

• .jules/bolt.md
• CHANGELOG.md
• styles.css

---

_{Comment @coderabbitai help to get the list of available commands.}