feat: 관리자 API 보안 인증 및 권한 확인 기능 추가

[seonghobae]

Superseded by #172, the canonical admin authorization patch. Retaining one validated implementation avoids duplicated reviews, merge conflicts, and divergent permission semantics.

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Review details

⚙️ Run configuration

Configuration used: Organization UI

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Run ID: 8dd99e0d-6357-4c3b-90e7-36db36e9081b

📥 Commits

Reviewing files that changed from the base of the PR and between ae0bc74 and 034b94a.

📒 Files selected for processing (4)

• CHANGELOG.md
• src/main/java/com/clearfolio/viewer/auth/TenantPermissions.java
• src/main/java/com/clearfolio/viewer/controller/AdminController.java
• src/test/java/com/clearfolio/viewer/controller/AdminControllerTest.java

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/admin-api-security-3505117479040061606

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