PR #138: Config Diff Viewer
Added side-by-side config diff viewer and event export functionality
Added side-by-side config diff viewer and event export functionality
Helm chart에 UI 관련 세부 설정 추가 (DB pool, timeout, logging, metrics)
노드당 커넥션 풀 수를 설정 가능하도록 공개하고 에러 핸들링 문서를 확장