🎨 팔레트: [UX 개선] 네비게이션 랜드마크의 번역 도구 호환성 향상

[seonghobae]

💡 내용: <nav> 요소의 aria-label을 시각적으로 숨겨진 <h2> 요소와 aria-labelledby로 교체했습니다.
🎯 이유: 브라우저 번역 도구가 aria-label 속성을 번역하지 못하는 문제를 해결하여, 다국어 환경에서 스크린 리더 사용자가 올바른 언어로 안내받을 수 있도록 합니다.
📸 변경 전/후: (시각적 변경 없음, 스크린 리더 경험 개선)
♿ 접근성: 브라우저 번역 시 스크린 리더 호환성 향상

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PR created automatically by Jules for task 8672272015988098153 started by @seonghobae

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📥 Commits

Reviewing files that changed from the base of the PR and between 728f0f3 and 8cbdf3b.

📒 Files selected for processing (3)

• .jules/palette.md
• src/main/kotlin/html4tree/main.kt
• src/test/kotlin/html4tree/MainTest.kt

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[seonghobae]

Exact-head review on 8cbdf3b9f9574f22b8937fc1555c6ba3de34e9fb:

1. .jules/palette.md adds this work under 2024-09-16, but this PR was created on 2026-09-16 and the adjacent ledger entry is already 2026-08-17. Unless this is deliberately replaying a documented 2024 artifact with source evidence, this backdates provenance by two years. RED: a traceability check that the new palette entry identifies the actual work date/source. GREEN: correct the entry to the current work date (or cite the historical source if it truly is historical) without rewriting prior ledger history.

2. The source change is accessibility/UI behavior, while the test only string-matches generated HTML. That does not verify the PR's stated reason: browser translation must update the text node and the nav accessible name must be computed from aria-labelledby. Please add current-head browser acceptance that loads the generated page, verifies the navigation landmark accessible name derives exactly once from #nav-label, confirms the visually-hidden heading remains non-visible but present to AT, exercises keyboard navigation/focus, and—if the Chrome Translate compatibility claim remains in the PR/ledger—captures a real translated-DOM/accessibility-tree result rather than assuming text-node translation. Preserve the existing aria-label regression assertion so the old untranslated attribute does not return. UI Delivery Gate remains pending until that evidence is terminal on this exact head.

Do not use a source-neutral wake commit for queued checks; the current CI/CodeQL/Security/SAST generation is still queued and should settle on the unchanged causal head.