diff --git a/src/main/java/io/github/petty/community/controller/PostController.java b/src/main/java/io/github/petty/community/controller/PostController.java
index 281ea02..61083e5 100644
--- a/src/main/java/io/github/petty/community/controller/PostController.java
+++ b/src/main/java/io/github/petty/community/controller/PostController.java
@@ -97,17 +97,4 @@ public ResponseEntity<?> likePost(@PathVariable Long id,
             return ResponseEntity.status(500).body("좋아요 처리에 실패했습니다.");
         }
     }
-    
-    // 🔥 기존 데이터 업데이트를 위한 임시 엔드포인트 (관리자용)
-    @PostMapping("/update-counts")
-    @PreAuthorize("hasRole('ADMIN')")
-    public ResponseEntity<?> updateAllPostCounts(@AuthenticationPrincipal CustomUserDetails userDetails) {
-            // 관리자 권한 확인
-            if (!userDetails.getAuthorities().stream()
-                .anyMatch(a -> a.getAuthority().equals("ROLE_ADMIN"))) {
-                return ResponseEntity.status(403).body("관리자 권한이 필요합니다.");
-                }
-        postService.updateAllPostCounts();
-        return ResponseEntity.ok(Map.of("message", "모든 게시글의 댓글 수와 좋아요 수가 업데이트되었습니다."));
-    }
 }
diff --git a/src/main/resources/static/js/common/edit-qna.js b/src/main/resources/static/js/common/edit-qna.js
index fe0f2fc..b632d60 100644
--- a/src/main/resources/static/js/common/edit-qna.js
+++ b/src/main/resources/static/js/common/edit-qna.js
@@ -188,7 +188,7 @@ async function checkPostOwnership() {
         }
 
         // 🔐 작성자 본인이 아니면 접근 차단
-        const isOwner = currentUser.username === post.userName;
+        const isOwner = currentUser.username === post.writer;
         if (!isOwner) {
             alert("본인이 작성한 게시글만 수정할 수 있습니다.");
             window.location.replace(`/posts/detail?id=${postId}`);
diff --git a/src/main/resources/static/js/common/edit-review.js b/src/main/resources/static/js/common/edit-review.js
index 5a87482..595e328 100644
--- a/src/main/resources/static/js/common/edit-review.js
+++ b/src/main/resources/static/js/common/edit-review.js
@@ -190,7 +190,7 @@ async function checkPostOwnership() {
         }
 
         // 🔐 작성자 본인이 아니면 접근 차단
-        const isOwner = currentUser.username === post.userName;
+        const isOwner = currentUser.username === post.writer;
         if (!isOwner) {
             alert("본인이 작성한 게시글만 수정할 수 있습니다.");
             window.location.replace(`/posts/detail?id=${postId}`);
diff --git a/src/main/resources/static/js/common/edit-showoff.js b/src/main/resources/static/js/common/edit-showoff.js
index 8640f81..b888031 100644
--- a/src/main/resources/static/js/common/edit-showoff.js
+++ b/src/main/resources/static/js/common/edit-showoff.js
@@ -176,7 +176,7 @@ async function checkPostOwnership() {
         }
 
         // 🔐 작성자 본인이 아니면 접근 차단
-        const isOwner = currentUser.username === post.userName;
+        const isOwner = currentUser.username === post.writer;
         if (!isOwner) {
             alert("본인이 작성한 게시글만 수정할 수 있습니다.");
             window.location.replace(`/posts/detail?id=${postId}`);
diff --git a/src/main/resources/templates/post-detail.html b/src/main/resources/templates/post-detail.html
index ee6e1b6..0d77f42 100644
--- a/src/main/resources/templates/post-detail.html
+++ b/src/main/resources/templates/post-detail.html
@@ -728,10 +728,6 @@ <h1 class="post-title">게시글을 불러오는 중입니다... 🐾</h1>
                 </div>
 
                 <div class="post-content">
-                    <div class="post-images">
-                        <!-- 이미지가 AJAX로 로드됩니다 -->
-                        <img src="/api/placeholder/400/320" alt="placeholder" class="loading-placeholder">
-                    </div>
 
                     <p>게시글 내용을 불러오는 중입니다... 잠시만 기다려 주세요! 🐕‍🦺</p>
 
@@ -837,7 +833,7 @@ <h3>
             const currentUser = await getCurrentUser();
             const loggedIn = !!currentUser;  // getCurrentUser 결과로 로그인 상태 판단
 
-            const isOwner = currentUser && (currentUser.username === post.userName);
+            const isOwner = currentUser && (currentUser.username === post.writer);
             const container = document.getElementById("postDetail");
 
             let petTypeLabel = '';
@@ -1159,8 +1155,7 @@ <h1 class="post-title">${post.title}</h1>
                 div.className = "comment";
 
                 // 🔐 댓글 작성자 본인인지 확인
-                const isCommentOwner = currentUser &&
-                    (currentUser.username === comment.userName);
+                const isCommentOwner = currentUser && (currentUser.username === comment.writer);
 
                 // 🔐 댓글 작성자에게만 수정/삭제 버튼 표시
                 const commentActionsHtml = isCommentOwner ? `