feat: 동기화 및 배치 실행 API PreAuthorize 구현

[dev-ant]

📋 상세 설명

• 동기화 및 배치 실행 API 관리자 권한 검증 위해 PreAuthorize Annotation 추가

📊 체크리스트

• PR 제목이 형식에 맞나요 e.g. feat: PR을 등록한다
• 코드가 테스트 되었나요
• 문서는 업데이트 되었나요
• 불필요한 코드를 제거했나요
• 이슈와 라벨이 등록되었나요 이슈 미등록

[github-actions]

✅ 테스트 결과 for PR

Build: success

🧪 테스트 실행 with Gradle
📈 Coverage: -0.00%

📁 테스트 결과
📁 커버리지 보고서 (HTML)

[codecov]

Codecov Report

❌ Patch coverage is 0% with 20 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
.../the/eternity/common/filter/GatewayAuthFilter.java	0.00%	12 Missing ⚠️
...java/until/the/eternity/common/enums/UserRole.java	0.00%	8 Missing ⚠️

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[Copilot]

Pull request overview

Copilot reviewed 8 out of 8 changed files in this pull request and generated 1 comment.

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[Copilot]

The usernameHeader variable is read from the request but never used after the refactoring. It's only referenced in the debug log on line 62, but it's not passed to the getAuthentication method anymore. Consider removing this unused variable to improve code clarity, or if it's needed for logging purposes, document that explicitly.