feat: 이벤트 진행 상점 수 조회 API 추가

[dh2906]

🔍 개요

• 주변상점 이벤트 영역에서 현재 진행 중인 이벤트를 가진 상점 수를 조회할 수 있게 했습니다.
• 같은 상점에 진행 중인 이벤트가 여러 개 있어도 상점 기준으로 한 번만 집계합니다.

• close 이벤트 진행 상점 갯수 조회 API 추가 #2272

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🚀 주요 변경 내용

• GET /shops/events/count API를 추가했습니다.
• 현재 날짜 기준으로 startDate <= today <= endDate인 이벤트만 집계합니다.
• 삭제된 상점과 삭제된 이벤트는 집계에서 제외합니다.
• 이벤트가 여러 개인 상점의 중복 집계를 막기 위해 COUNT(DISTINCT shop) 쿼리를 사용했습니다.

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💬 참고 사항

• 검증: ./gradlew test --tests 'in.koreatech.koin.acceptance.domain.ShopApiTest' --rerun-tasks
• 결과: BUILD SUCCESSFUL, 5 actionable tasks: 5 executed

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✅ Checklist (완료 조건)

• 코드 스타일 가이드 준수
• 테스트 코드 포함됨
• Reviewers / Assignees / Labels 지정 완료
• 보안 및 민감 정보 검증 (API 키, 환경 변수, 개인정보 등)

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: aebeb151-c0b8-4173-849c-dd5bc62ea080

📥 Commits

Reviewing files that changed from the base of the PR and between 8b51f3e and 5afcbe8.

📒 Files selected for processing (6)

• src/main/java/in/koreatech/koin/domain/shop/controller/ShopEventApi.java
• src/main/java/in/koreatech/koin/domain/shop/controller/ShopEventController.java
• src/main/java/in/koreatech/koin/domain/shop/dto/event/response/ShopEventCountResponse.java
• src/main/java/in/koreatech/koin/domain/shop/repository/shop/ShopRepository.java
• src/main/java/in/koreatech/koin/domain/shop/service/ShopEventService.java
• src/test/java/in/koreatech/koin/acceptance/domain/ShopApiTest.java

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/shop-event-count

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[github-actions]

Unit Test Results

660 tests   657 ✔️  1m 16s ⏱️
163 suites      3 💤
163 files        0 ❌

Results for commit 5afcbe8.

♻️ This comment has been updated with latest results.

[DHkimgit]

수고하셨습니다! 감사해요