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provenance: defer unmeasured date-format optimization - #641

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bolt/inline-ternary-padstart-16571964068666700138
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provenance: defer unmeasured date-format optimization#641
seonghobae wants to merge 3 commits into
developfrom
bolt/inline-ternary-padstart-16571964068666700138

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@seonghobae

@seonghobae seonghobae commented Aug 30, 2026

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Fleet repair

이 PR의 원래 padStart() 제거는 기능 동등성 테스트만 있었고 buyer-visible 성능을 입증하는 protected-vs-candidate 측정이 없었습니다. 테스트 통과를 성능 증거로 승격하지 않습니다.

원래 commit은 같은 task에서 cloud-sync.jsanalytics.js modulepreload도 추가했습니다. 이 부분은 protected Playwright contract가 요구하는 유효한 loading semantic이지만, 현재 canonical successor는 Draft #669입니다. #669가 동일 두 preload hint와 code-current changelog를 소유하고 있고 current exact head 13cf9c03012bb7dfd3968488c6ea4f6101f6c2ae에서 Server Tests/Fuzz/SAST/Security는 성공했으나 required CodeQL PR은 아직 실패 상태이므로 succession 검증이 완결되지 않았습니다.

Current exact authority

  • protected/base: develop@2c328875e00e86537df3e965170be80532571cad
  • current head: f87075c23b6b1ddb633497ae2016388435fec49a
  • ancestry: ahead 3 / behind 0
  • effective protected-base files: 0
  • state: Draft/open/mergeable provenance lane

Normal descendant f87075c....jules/bolt.md, CHANGELOG.md, app.js, index.html을 protected tree와 정확히 일치시켰습니다. branch history는 보존했고 force push/destructive rebase를 사용하지 않았습니다.

Why not close yet

현재 tree에는 유효 delta가 없지만 원래 PR의 유효한 modulepreload semantic을 #669가 완전 승계했다는 merge-authorizing exact-head evidence가 아직 부족합니다. #669의 required CodeQL, current-head review/threads, browser loading contract와 protected integration이 완결되기 전에 이 PR을 단순 Close하지 않습니다.

padStart() 변경을 다시 제안하려면 동일 브라우저/runtime/CPU와 representative/right-cleared project workload에서 protected-vs-candidate warm-up, sample cardinality, median/p95, main-thread profile, allocation/GC를 남기고 material buyer effect를 보여야 합니다. 그렇지 않으면 protected의 단순 구현을 유지합니다.

날짜 포맷팅 함수(`formatDateInput`, `formatLocalDateInput`, `formatCompactDate`)에서 사용되던 `String.prototype.padStart()` 메서드를 인라인 삼항 연산자를 활용한 문자열 연결로 대체했습니다. 이를 통해 대규모 WBS 데이터 처리 시 발생하는 문자열 객체 할당 오버헤드를 회피하고 전체적인 렌더링 성능을 개선했습니다.

추가로 `index.html`에 누락되었던 `cloud-sync.js` 및 `analytics.js`에 대한 `modulepreload` 링크를 복구하여 테스트 실패를 방지하고 초기 로딩 성능을 향상시켰습니다.
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A second [Unreleased] header after the 1.0.1 entry split pending
changes into two sections, which release-note tooling can misparse.
Fold the padStart entry into the existing top-level Unreleased/Changed
section instead.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
@seonghobae seonghobae added maintenance type: maintenance Maintenance, build, dependency, or operational upkeep labels Sep 7, 2026 — with ChatGPT Codex Connector
@seonghobae
seonghobae marked this pull request as draft September 7, 2026 03:08
@seonghobae seonghobae changed the title ⚡ Bolt: [performance improvement] 핫루프 문자열 포맷팅 최적화 (String.padStart 제거) provenance: defer unmeasured date-format optimization Sep 7, 2026
@seonghobae seonghobae added the priority: high High-priority or P1 work label Sep 7, 2026 — with ChatGPT Codex Connector
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