perf(web): 홈 번들 축소(gsap 제외)·fetch 워터폴 제거·죽은 코드 정리#946
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…code cleanup - Fold fetchHeroSlides into the existing Promise.all in the home page loader instead of awaiting it afterward, removing a full round-trip from server TTFB for the above-the-fold hero. - Convert HomeShell to a Server Component: extract GreetingRow (time-based greeting) and the usePersonalizationAvailable check into small client leaves, so DiscoveryBrowse and its rails render server-side and only hydrate the pieces that are actually interactive. - Add experimental.optimizePackageImports for the design-system barrel, and dynamically import SmartNav in ConditionalNav so gsap no longer ships to routes (including home) where SmartNav never renders. - Gate ReactQueryDevtools behind a dev-only dynamic import and drop a stray AuthProvider console.log. - Remove confirmed-orphaned gsap/three/ogl code with no remaining importers: main-renewal's legacy redesign components (HeroCard, MasonryGrid/Item, MainHero, HeroCover, EditorialMagazine, its barrel), the Bookshelf/ShelfRow/IssueSpine chain, CircularGallery, and the useItemCardGSAP/useImageModalAnimation hooks (plus its now-orphaned test). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
…/LCP regression Bisected via before/after Lighthouse (throttled, interleaved, median of 4 runs) after the user asked how much the home render-speed work actually improved things. Converting HomeShell/DiscoveryBrowse to a Server Component looked correct in principle (less client JS) but measured worse in practice: +150ms FCP, +700-900ms LCP versus the original client-rendered version, most likely because serializing the many server-rendered rail/card elements through the RSC flight payload costs more than what's saved by not shipping that code as client JS — passing `home` as a plain prop to a client component that maps over it itself is cheaper here. Reverting HomeShell.tsx/GreetingRow.tsx/ PersonalizationSlot.tsx back to the original single-file client component; keeping the hero fetch parallelization, SmartNav dynamic import, and dead-code removal from the same effort, which measured cleanly. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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Summary
홈 렌더 관련 번들·데이터 정리 (ISR #944 의 컴패니언). FCP/LCP 는 로컬 측정상 노이즈 수준이었으나, ISR 로 셸이 즉시 뜨는 지금은 클라이언트 번들 축소(-72KB, 대부분 gsap) 가 하이드레이션/TTI 에 더 유의미.
Changes
fetchHeroSlides를 기존Promise.all에 합류(6개 백엔드 호출 병렬화). ISR revalidation 렌더도 그만큼 단축.ConditionalNav의SmartNav(gsap 정적 import)를next/dynamic으로 전환 → shell/home 라우트에서 gsap 미로드(측정: 홈 gsap 청크 1개 68KB → 0).next.config.js:optimizePackageImports(design-system barrel, motion).ReactQueryDevtoolsdev-only dynamic import(프로덕션 번들 제외) +AuthProvider잔여console.log제거.main-renewal/*(SmartNav 제외),BookshelfView/ShelfRow/IssueSpine,CircularGallery,useItemCardGSAP/useImageModalAnimation(+테스트).Test Plan
next build성공,/[locale]● SSG(ISR, perf(web): [locale] 트리 ISR 화 — 홈 매 요청 dynamic 제거 (#942) #944) 유지