docs(identity-placeholder): document usage and a11y notes

[dohy-eon]

Summary

• Document snippet import path and a typical Avatar fallback pattern.
• Describe default screen reader behavior (role="img", fixed English aria-label) and when to consider aria-hidden for standalone use.

Test plan

• bun docs:test (or bun test:all)

Summary by CodeRabbit

• 문서
  • IdentityPlaceholder 컴포넌트 사용법 문서 추가: 컴포넌트 임포트 및 렌더링 예시, Avatar의 폴백으로 활용하는 방법 및 React 복합 구성 요소와의 조합 예시 포함
  • 접근성 가이드 추가: 기본 SVG 접근성 속성(예: role, aria-label) 설명과 장식용으로 사용할 경우 aria-hidden 추가 권장 사항 포함

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Latest commit: 8e012ef

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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Reviewing files that changed from the base of the PR and between b6f0928 and 8e012ef.

📒 Files selected for processing (1)

• docs/content/react/components/identity-placeholder.mdx

✅ Files skipped from review due to trivial changes (1)

• docs/content/react/components/identity-placeholder.mdx

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📝 Walkthrough

Walkthrough

IdentityPlaceholder 문서가 추가되어 Usage(임포트·렌더링·Avatar fallback·복합 API 구성)와 Accessibility(SVG에 적용된 role/aria-label 및 사용 컨텍스트 가이드) 섹션이 포함되었습니다. 변경은 문서 파일 1개에 국한됩니다.

Changes

Cohort / File(s)	Summary
Documentation docs/content/react/components/identity-placeholder.mdx	Usage 섹션 추가: IdentityPlaceholder 임포트 방법, 렌더링 예시, Avatar의 fallback으로 사용 예, 및 복합 API(IdentityPlaceholder.Root, IdentityPlaceholder.Image) 구성법 설명. Accessibility 섹션 추가: 내부 SVG에 role="img", aria-label="Identity placeholder" 기본 적용 및 standalone 장식 요소에는 aria-hidden="true" 권장 안내.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

시

🐰 새 문서가 살짝 튀어나와서,
아이콘 자리를 은은히 채우네.
접근성 속성 속삭이며 웃고,
개발 길에 작은 당근 하나 놓고 갑니다. 🥕

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	PR 제목은 풀 리퀘스트의 주요 변경 사항인 identity-placeholder 컴포넌트의 사용 방법과 접근성 관련 문서화를 명확하게 요약하고 있습니다.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@docs/content/react/components/identity-placeholder.mdx`:
- Around line 50-51: Clarify that the suggestion to apply aria-hidden applies
only to the decorative identity placeholder element itself (non-interactive,
non-focusable placeholder inside the component) rather than the entire parent
container; update the text in identity-placeholder.mdx to say something like:
when the placeholder is purely decorative and the same information is already
provided in nearby text, mark the placeholder element itself with
aria-hidden="true" (not the whole container) so assistive technologies ignore
only the decorative element while preserving accessibility of surrounding
interactive or informative content.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 75ce545a-a446-4745-a09d-55751a7ceb48

📥 Commits

Reviewing files that changed from the base of the PR and between 14f68c9 and b6f0928.

📒 Files selected for processing (1)

• docs/content/react/components/identity-placeholder.mdx