[PRBE-29] 게시물 전체 통계 정보 추가#16

yerim123456 merged 3 commits intomain2025-DetectEP/Backend:mainfrom

PRBE-29/hotfix/add-post-total-info2025-DetectEP/Backend:PRBE-29/hotfix/add-post-total-infoCopy head branch name to clipboard