refactor: API 응답에 대한 mock 폴백(?? mock) 제거

[shunn2]

컴포넌트에서 apiData ?? mockXxx 폴백 패턴을 모두 제거하고,
로딩/에러/빈 데이터 가드로 대체. mock 데이터가 실제 화면에 노출되지 않도록 함.

대상: KpiSection, ChannelProfileSection, ChannelSummarySection, VideoDetailPage, VideoStatsSection, InfluencerBaseInfo, ImpactMetricsSection, EngagementAnalyticsSection, RetentionSection

📌 작업 개요

Button 컴포넌트 개발

🗂 작업 유형

해당하는 항목에 x를 채워 주세요.

• 기능 추가 (feat)
• 버그 수정 (fix)
• 리팩토링 (refactor)
• 스타일 / UI 수정 (style)
• 성능 개선 (perf)
• 테스트 (test)
• 기타 (chore, docs 등)

✏️ 작업 내용

✅ 셀프 체크리스트

머지 전 직접 확인해 주세요.

• 로컬에서 정상 동작 확인
• 불필요한 콘솔 로그, 주석, 디버그 코드 제거
• 타입 에러 없음

💬 리뷰어에게

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Project	Deployment	Actions	Updated (UTC)
inflace	Ready	Preview, Comment	Jun 13, 2026 6:32am

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 683cf323-c855-4743-8c8b-6c558d023a22

📥 Commits

Reviewing files that changed from the base of the PR and between fa051d1 and 67a6508.

📒 Files selected for processing (9)

• src/pages/videoDetail/ui/VideoDetailPage.tsx
• src/widgets/channel/Kpi/ui/KpiSection.tsx
• src/widgets/influencerDetail/channelSummary/ui/ChannelSummarySection.tsx
• src/widgets/influencerDetail/engagementAnalytics/ui/EngagementAnalyticsSection.tsx
• src/widgets/influencerDetail/impactMetrics/ui/ImpactMetricsSection.tsx
• src/widgets/influencerDetail/influencerBaseInfo/ui/InfluencerBaseInfo.tsx
• src/widgets/main/channelProfile/ui/ChannelProfileSection.tsx
• src/widgets/videoDetail/retention/ui/RetentionSection.tsx
• src/widgets/videoDetail/stats/ui/VideoStatsSection.tsx

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch refactor/remove-mock-fallback

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