🎨 Palette: 파일 용량 초과 에러 메시지 개선

[seonghobae]

💡 What: 업로드 파일 용량 초과 시 하드코딩된 '5 GiB' 에러 메시지를 제거하고, MAX_UPLOAD_BYTES 상수를 기반으로 동적으로 계산된 용량을 표시하도록 변경했습니다. 일괄 업로드 폼(batch input)의 경우 총 파일 크기가 백엔드 제한 용량을 초과하는지 여부도 함께 검증하여 사전에 오류를 방지합니다.

🎯 Why: 백엔드 제한값이 변경되더라도 클라이언트 측 에러 메시지에 변경 사항이 자동으로 반영되어 사용자에게 잘못된 정보를 제공하는 문제를 막고 혼란을 최소화하기 위함입니다. 일괄 업로드 시에도 사용자가 용량 초과 오류를 서버에 제출하기 전에 미리 알 수 있도록 하여 불필요한 대기 시간을 줄였습니다.

📸 Before/After: 파일 제한 용량이 하드코딩된 '5 GiB'에서 MAX_UPLOAD_BYTES 값을 동적으로 변환한 값(예: 5.00 GiB)으로 표시되며, 일괄 업로드 시에도 총 파일 크기 초과 여부가 올바르게 표출됩니다.

♿ Accessibility: setCustomValidity 및 aria-invalid 상태 변경과 더불어 aria-live 영역에 즉각적으로 초과된 용량 에러 메시지를 주입함으로써 화면 낭독기(Screen Reader) 사용자도 용량 초과 여부를 즉시 인지할 수 있도록 접근성을 개선했습니다.

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PR created automatically by Jules for task 1669556879496276780 started by @seonghobae

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📥 Commits

Reviewing files that changed from the base of the PR and between 963291f and ad969a2.

📒 Files selected for processing (5)

• .jules/palette.md
• CHANGELOG.md
• pr_description.txt
• saas_web.py
• tests/test_saas_web.py

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