fix(content-studio): useResearchInCopy type mismatch in plan route test (from #498)

[thxforall]

Summary

bun run build가 packages/web/app/api/v1/content/assets/plan/__tests__/route.test.ts:559의 useResearchInCopy: false 필드 타입 mismatch로 실패. dev 자체가 빌드 안 되는 상태.

Root cause

PR #498 (feat(content-studio): AI-powered content generation pipeline) 머지 시 test fixture가 production type signature와 일치하지 않게 추가됨. test 파일이라도 Next.js 16 build pipeline은 전체 type-check를 수행하여 실패.

Reproduction

git checkout dev
git pull origin dev
cd packages/web
bun install
bun run build
# → Next.js build worker exited with code: 1
# → Error at app/api/v1/content/assets/plan/__tests__/route.test.ts:559
#   useResearchInCopy: false  ^^^^^^^^^^^^^^^^^^

Impact

• 모든 후속 PR이 bun run build 로컬 검증에서 실패 (false positive)
• Vercel preview build / production deploy가 fail될 가능성 (Next.js 16 build pipeline)
• 본 이슈와 별개 작업 중인 PR fix(vton-modal): close button alignment in panel header (#602) #607, fix(vton-slider): initial render shows after-only (clip-path refactor) (#602) #608, feat(vton): expand whitelist to shoes + dedupe + keywords search + bilingual labels (#602) #609 모두 동일 영향

Suggested fix

두 가지 중 하나:

1. useResearchInCopy 필드를 PlanInput(또는 동급) 타입 정의에 정식 추가
2. test fixture에서 해당 필드 제거 (불필요한 경우)

Owner

#498 작성자 (content-studio 영역 owner)

Related

• Discovered while building fix(vton-modal): close button alignment in panel header (#602) #607 / fix(vton-slider): initial render shows after-only (clip-path refactor) (#602) #608 / feat(vton): expand whitelist to shoes + dedupe + keywords search + bilingual labels (#602) #609 (Epic [VTON] Modal 사용성·도메인 정합성 4-in-1 (filter/search/UI/render bug) #602)