feat: 대학 정보 캐시 재검증 API 추가

[yoonc01]

관련 이슈

• 대학 지원 정보가 운영 중 계속 추가/수정되는데, university-web의 대학 목록/상세 페이지는 SSG 캐시를 사용하고 있어 배포 없이 최신 데이터가 바로 반영되지 않는 문제가 있었습니다.
• 특히 새로 추가된 지원 가능 대학 상세 페이지는 빌드 시점에 생성된 경로가 아니면 접근이 어려워질 수 있었습니다.

작업 내용

• POST /api/revalidate API를 추가했습니다.
  • REVALIDATE_SECRET 기반 인증을 적용했습니다.
  • Authorization: Bearer {secret} 또는 x-revalidate-secret 헤더를 지원합니다.
  • 전체 대학, 특정 홈대학, 특정 대학 경로 단위로 캐시 무효화가 가능하도록 했습니다.
• 대학 상세 페이지의 dynamicParams를 true로 변경했습니다.
  • 빌드 이후 새로 추가된 대학 상세 페이지도 on-demand로 생성될 수 있도록 했습니다.
• 주기 ISR은 적용하지 않고, 필요한 시점에 revalidate API를 호출하는 방식으로 유지했습니다.

사용 예시

curl -X POST "https://www.solid-connection.com/api/revalidate" \
  -H "Authorization: Bearer ${REVALIDATE_SECRET}" \
  -H "Content-Type: application/json" \
  --data '{"scope":"home-university","homeUniversity":"kyunghee"}'

[vercel]

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Project	Deployment	Actions	Updated (UTC)
solid-connect-university-web	Ready	Preview, Comment	Jun 25, 2026 4:12pm

2 Skipped Deployments

Project	Deployment	Actions	Updated (UTC)
solid-connect-web-admin	Skipped		Jun 25, 2026 4:12pm
solid-connection-web	Skipped		Jun 25, 2026 4:12pm

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Configuration used: Repository UI

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📥 Commits

Reviewing files that changed from the base of the PR and between a1a2241 and debd87b.

📒 Files selected for processing (3)

• README.md
• apps/university-web/src/app/api/revalidate/route.ts
• apps/university-web/src/app/university/[homeUniversity]/[id]/page.tsx

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