🎨 Palette: [UX 개선] 버튼 클릭 시 직관적인 시각 피드백 추가

[seonghobae]

💡 What: 버튼(.button)과 언어 변경 버튼(.language-switch button)에 클릭(:active) 시 부드럽게 축소(scale)되는 시각적 트랜지션을 추가했습니다.
🎯 Why: 마우스나 터치 환경에서 클릭 시 아무런 피드백이 없어 버튼이 정상적으로 눌렸는지 인지하기 어려운 문제를 개선하여, 물리적 버튼을 누르는 듯한 직관적이고 촉각적인 피드백을 제공합니다.
📸 Before/After: 클릭 중인 상태에서 버튼이 명확히 반응(0.96배 축소)합니다.
♿ Accessibility: 시각적 피드백을 강화하여 운동 및 인지 능력이 다른 사용자들에게도 상태 변화를 명확하게 전달합니다.

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PR created automatically by Jules for task 16554538662171031644 started by @seonghobae

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📥 Commits

Reviewing files that changed from the base of the PR and between d06c1cb and 4a772db.

📒 Files selected for processing (4)

• .Jules/palette.md
• CHANGELOG.md
• styles.css
• tests/test_ux_styles.py

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[seonghobae]

Closing as a superseded duplicate of #142. PR #142 carries the same button and language-switch :active feedback on the current base and includes explicit regression coverage for both selectors and their transform transitions. Consolidating prevents competing style branches and duplicate exact-head checks.

[google-labs-jules]

Closing as a superseded duplicate of #142. PR #142 carries the same button and language-switch :active feedback on the current base and includes explicit regression coverage for both selectors and their transform transitions. Consolidating prevents competing style branches and duplicate exact-head checks.

Understood. Acknowledging that this work is now obsolete and stopping work on this task.