⚡ Bolt: [성능 개선] 불필요한 이미지 디코딩 지연 제거

[seonghobae]

💡 What

• index.html 파일에 있는 모든 SVG 이미지(.svg)와 fetchpriority="high"가 설정된 LCP(최대 콘텐츠 풀 페인트) 이미지에서 decoding="async" 속성을 제거했습니다.
• 이를 검증하는 tests/test_styles.py의 테스트 코드 로직을 수정하여, loading="lazy"이면서 SVG가 아닌 래스터 이미지에 대해서만 해당 속성이 있는지 검사하도록 변경했습니다.

🎯 Why

SVG 이미지는 브라우저가 파싱을 통해 렌더링하므로 래스터 이미지처럼 별도의 '디코딩' 과정이 필요하지 않아 decoding="async" 설정 자체가 무의미합니다. 더 큰 문제는 fetchpriority="high" 속성이 부여된 중요 LCP 이미지(히어로 이미지 등)에 이를 함께 적용한 것입니다. 이는 가장 먼저 동기적으로 그려져야 할 핵심 콘텐츠의 렌더링을 굳이 비동기로 지연시키는 심각한 성능 안티패턴이기 때문에 제거해야 합니다.

📊 Impact

히어로 섹션 및 기타 주요 SVG 이미지들의 렌더링 지연을 방지하여 LCP(Largest Contentful Paint)와 TTI(Time To Interactive) 지표를 소폭 개선합니다. 브라우저의 메인 스레드 오버헤드를 줄입니다.

🔬 Measurement

1. index.html의 소스코드를 열어 SVG 이미지 태그들에 더 이상 decoding="async"가 존재하지 않는지 확인합니다.
2. tests/test_styles.py 테스트가 정상적으로 통과하는지 확인합니다. (python3 -m pytest tests/)

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PR created automatically by Jules for task 2110590937339615064 started by @seonghobae

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[opencode-agent]

Pull request overview

OpenCode could not approve from deterministic current-head evidence because GitHub Checks have failed.

Findings

1. HIGH Current-head GitHub Checks - Fix failed required checks before approval

• Problem: Failed same-head checks remain for e61275ded4fd9d82915157df8cc30755bcb32ae6.
• Root cause: The model-unavailable evidence fallback is allowed only when peer GitHub Checks are complete and clean.
• Fix: Read and fix the failed check logs below, then rerun the current-head checks.
• Regression test: Keep the model-unavailable fallback gated on an empty failed-check rollup.

Failed checks:

• Strix Security Scan/strix: FAILURE (https://github.com/ContextualWisdomLab/ContextualWisdomLab.github.io/actions/runs/29514989890/job/87677654367)
• Strix Security Scan/strix: failure (https://github.com/ContextualWisdomLab/ContextualWisdomLab.github.io/actions/runs/29514989890/job/87677654367)

Changed-File Evidence Map

flowchart LR
  PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
  Evidence --> S1["Changed file (2 files)"]
  S1 --> I1["repository behavior"]
  I1 --> R1["Review risk: Changed file (2 files)"]
  R1 --> V1["required checks"]
  Evidence --> S2["Test: test_styles.py"]
  S2 --> I2["regression suite"]
  I2 --> R2["Review risk: Test: test_styles.py"]
  R2 --> V2["targeted test run"]

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[opencode-agent]

OpenCode Review Overview

• Head SHA: e61275ded4fd9d82915157df8cc30755bcb32ae6
• Workflow run: 29764954536
• Workflow attempt: 1
• Gate result: REQUEST_CHANGES (approval step)

Pull request overview

OpenCode could not approve from deterministic current-head evidence because GitHub Checks have failed.

Findings

1. HIGH Current-head GitHub Checks - Fix failed required checks before approval

• Problem: Failed same-head checks remain for e61275ded4fd9d82915157df8cc30755bcb32ae6.
• Root cause: The model-unavailable evidence fallback is allowed only when peer GitHub Checks are complete and clean.
• Fix: Read and fix the failed check logs below, then rerun the current-head checks.
• Regression test: Keep the model-unavailable fallback gated on an empty failed-check rollup.

Failed checks:

• Strix Security Scan/strix: FAILURE (https://github.com/ContextualWisdomLab/ContextualWisdomLab.github.io/actions/runs/29514989890/job/87677654367)
• Strix Security Scan/strix: failure (https://github.com/ContextualWisdomLab/ContextualWisdomLab.github.io/actions/runs/29514989890/job/87677654367)

Changed-File Evidence Map

flowchart LR
  PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
  Evidence --> S1["Changed file (2 files)"]
  S1 --> I1["repository behavior"]
  I1 --> R1["Review risk: Changed file (2 files)"]
  R1 --> V1["required checks"]
  Evidence --> S2["Test: test_styles.py"]
  S2 --> I2["regression suite"]
  I2 --> R2["Review risk: Test: test_styles.py"]
  R2 --> V2["targeted test run"]

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