🎨 Palette: [UX improvement] 클라이언트 측 파일 유형 검증 추가

[seonghobae]

💡 What: 업로드할 파일의 MIME 타입을 확인하여 오디오/비디오가 아닌 파일에 대해 사용자에게 경고(에러 처리 또는 경고 메시지 표시)를 제공합니다.
🎯 Why: HTML accept 속성은 우회가 가능하기 때문에, 사용자가 잘못된 포맷의 파일을 선택하여 서버로 전송하기 전에 인라인 피드백을 제공하여 사용성을 향상시키기 위함입니다.
📸 Before/After: N/A
♿ Accessibility: 잘못된 타입에 대해 setCustomValidity와 aria-invalid를 설정하여 스크린 리더 사용자에게 입력이 유효하지 않음을 알리고 경고 메시지를 표시합니다.

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PR created automatically by Jules for task 9321612218335162625 started by @seonghobae

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Plan: Advanced

Run ID: 5ad693ec-c520-4f62-9f38-214bea0e4cbb

📥 Commits

Reviewing files that changed from the base of the PR and between 47c6fd2 and 1d0fe25.

📒 Files selected for processing (2)

• .jules/palette.md
• saas_web.py

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[opencode-agent]

Pull request overview

OpenCode reviewed the current-head product diff. Coverage is a separate gate.

Changed files

• .jules/palette.md — repository behavior
• saas_web.py — Python module behavior

Changed behavior

flowchart LR
  PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
  Evidence --> S1["Repository file: palette.md"]
  S1 --> I1["repository behavior"]
  I1 --> R1["Review risk: Repository file: palette.md"]
  R1 --> V1["required checks"]
  Evidence --> S2["Python: saas_web.py"]
  S2 --> I2["Python module behavior"]
  I2 --> R2["Review risk: Python: saas_web.py"]
  R2 --> V2["pytest plus coverage"]

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Findings

No source-backed product finding is synthesized from the coverage gate. A coverage miss belongs in the status comment.

• Head SHA: 1d0fe2560d3ee92807ee46264ccd51f92ca80826
• Workflow run: 34629269161
• Workflow attempt: 1
• Coverage gate: failure

Review outcome

Coverage is a gate, not the review. This body reviews the changed product files.

Changed-File Evidence Map

flowchart LR
  PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
  Evidence --> S1["Repository file: palette.md"]
  S1 --> I1["repository behavior"]
  I1 --> R1["Review risk: Repository file: palette.md"]
  R1 --> V1["required checks"]
  Evidence --> S2["Python: saas_web.py"]
  S2 --> I2["Python module behavior"]
  I2 --> R2["Review risk: Python: saas_web.py"]
  R2 --> V2["pytest plus coverage"]

Loading

[opencode-agent]

OpenCode Review Overview

• Head SHA: 1d0fe2560d3ee92807ee46264ccd51f92ca80826
• Workflow run: 34629269161
• Workflow attempt: 1
• Gate result: COVERAGE_BLOCKED
• Coverage gate: failure
• Model pool: unknown
• Verdict: COVERAGE_BLOCKED
• Formal review: 🎨 Palette: [UX improvement] 클라이언트 측 파일 유형 검증 추가 #563 (review)

Coverage evidence did not pass, so approval is blocked. The formal pull-request review is the source-backed diff review, not this status comment.

[cwl-noema-review]

Noema LLM review

The PR adds client-side three-stage file type validation for single and batch uploads. Valid audio/video types pass through, invalid non-media types are blocked via setCustomValidity and aria-invalid, and unknown/empty MIME types produce a non-blocking warning state with warning styling. State variables invalidType and unknownTypeCount are reset at the start of each validation run, preventing stale state after changing file selection. The .jules/palette.md learning entry accurately documents this behavior. Six independent probes across single-file, batch prioritization, pluralization, and state reset scenarios passed without finding regressions.

Reviewed changed lines

• saas_web.py:240 (RIGHT): Single-file validation uses a three-state check for valid, invalid, and unknown MIME types.
• saas_web.py:241 (RIGHT): Invalid non-media type blocks submission and sets custom validity plus aria-invalid.
• saas_web.py:246 (RIGHT): Unknown or empty file.type produces a warning-colored preview and does not block submission.
• saas_web.py:343 (RIGHT): invalidType and unknownTypeCount are initialized fresh per validation run, preventing stale state.
• saas_web.py:371 (RIGHT): Batch validation prioritizes invalid types over unknown-type warnings.
• saas_web.py:374 (RIGHT): Unknown-type warning message is correctly pluralized for multiple files.
• .jules/palette.md:84 (RIGHT): Palette entry documents the three-stage validation UX and is consistent with the implemented code.

Adversarial validation

• saas_web.py:240 (RIGHT) falsified: A valid audio file with a recognized MIME type still passes client-side validation and reaches the size-based preview. — The condition at line 240 only fires when file.type is truthy and does not start with audio/ or video/. audio/mpeg starts with audio/, so the branch is skipped and execution reaches the normal preview path.
• saas_web.py:241 (RIGHT) falsified: A file with a recognized non-media type (e.g., image/png) is blocked with setCustomValidity and the preview is not shown. — image/png is truthy and does not start with audio/ or video/, so setCustomValidity is called, aria-invalid is set, the return executes, and the next preview assignment at line 250 is unreachable for this selection.
• saas_web.py:246 (RIGHT) falsified: A file with an empty or whitespace file.type produces a warning-colored preview and does not block submission. — file.type is falsy, so the else-if branch at line 245 runs: it assigns the warning message and color but does not call setCustomValidity, leaving submission allowed.
• saas_web.py:371 (RIGHT) falsified: When batch files contain both invalid and unknown types, the invalid type blocks validation and takes priority over the unknown warning. — The loop collects invalidType for image/png and increments unknownTypeCount for the empty type. After size checks, the invalidType check at line 371 appears before the unknownTypeCount branch at line 375, so the invalid message and setCustomValidity run first.
• saas_web.py:374 (RIGHT) falsified: Multiple unknown-type files produce a correctly pluralized warning message. — The ternary on line 376 appends 's' only when unknownTypeCount > 1; with two files the message contains 'warning: 2 unknown file types', so the singular counterexample is falsified.
• saas_web.py:343 (RIGHT) falsified: The invalidType and unknownTypeCount variables are reset at the start of each validation run, preventing stale state from a previous selection. — Lines 343-344 initialize invalidType to null and unknownTypeCount to 0 on every execution of the change handler, before the loop that recomputes state, so prior values cannot persist.
• Residual risk: Low. Client-side validation remains bypassable by malicious clients, but backend content-type validation already exists and serves as the authoritative gate. Behavior for files with unusual but valid audio/video MIME subtypes (e.g., application/ogg) may result in warning styling rather than invalid blocking, but this aligns with the documented non-blocking unknown-type policy.

Findings

• No blocking findings.

• Result: APPROVE
• Head SHA: 1d0fe2560d3ee92807ee46264ccd51f92ca80826
• Reviewer credential: noema-review-github-app-refresh
• Actor: cwl-noema-review[bot]

[seonghobae]

@jules #563@1d0fe2560d3ee92807ee46264ccd51f92ca80826은 Draft로 되돌렸습니다. UX 방향은 유지하되 material-UI acceptance가 없습니다. ordinary-forward로 다음을 수리해 주세요.

1. 파일 선택 검증을 테스트 가능한 helper/contract로 분리하거나 현재 JS boundary를 직접 실행하는 regression을 추가해 single/multiple input 각각에서 (a) audio/video MIME → valid, (b) 알려진 non-media MIME → setCustomValidity + aria-invalid=true + submit 차단, (c) 빈 MIME → warning-only + submit 허용, (d) invalid→valid/unknown 재선택 시 custom validity와 aria-invalid가 반드시 초기화됨을 검증하세요.
2. 경고/오류는 색상만으로 전달하지 말고 텍스트/상태 semantics가 남는지 확인하세요. setCustomValidity만으로 별도 preview 경고가 자동으로 live announcement 되는 것은 아니므로, 실제 화면의 상태 전달 계약(aria-describedby/live status 등 기존 구조와 맞는 최소 방식)을 확인하고 regression을 붙이세요. 접근성 동작을 증명하지 못하면 PR 본문의 ‘스크린 리더 사용자에게 알림’ 표현을 축소하세요.
3. .jules/palette.md의 날짜가 현재 변경과 맞지 않는 2024-09-12로 기록되어 있고 repository-wide doctrine을 과도하게 일반화합니다. canonical protected 내용과 비교해 generated doctrine이면 제거하고, 필요한 제품 계약은 test/현행 UX 문서에만 남기세요.
4. 이 검증은 security control이 아니라 pre-submit UX입니다. 서버 측 content validation을 대체한다고 표현하지 마세요. unrelated source/dependency/workflow 변경 없이 current head ordinary child로 진행하세요.

Delivery Gate 현재값: 의도성 PASS / 기능 완전성 FAIL / 콘텐츠 적합성 PARTIAL / 복원력 FAIL / 증거성 FAIL / 고유성 N/A. 실제 normal·warning·error·reselect 및 keyboard/screen-reader 상태 전달 evidence가 같은 exact head에서 확인될 때까지 Draft 유지입니다.

[seonghobae]

Fresh overlap verification found that the valid product delta in this PR is already a strict subset of canonical successor #556 (4b106434466e8a3759daff9e82ac44402a99261e). #556 preserves the same three-state contract for single and batch inputs—declared audio/video accepted, declared non-media blocked with custom validity + aria-invalid, empty File.type treated as unknown/non-blocking with explicit server-validation copy—while also retaining a focused regression and explicitly rejecting the generated repository-wide Palette doctrine/security overclaim. #563's .jules/palette.md addition is therefore not a valid unique delta to preserve.

No check/review status from #563 transfers to #556. #556 remains Draft until its own current-head browser/a11y/responsive evidence and required gates/independent review are complete. Closing #563 is successor consolidation, not completion of the UX lane.