fix: 后端代码格式化

backend/src/main/java/com/openisle/dto/PostMetaDto.java

@@ -1,16 +1,16 @@
 package com.openisle.dto;
 
-import lombok.Data;
-
 import java.time.LocalDateTime;
+import lombok.Data;
 
 /** Lightweight post metadata used in user profile lists. */
 @Data
 public class PostMetaDto {
-    private Long id;
-    private String title;
-    private String snippet;
-    private LocalDateTime createdAt;
-    private String category;
-    private long views;
+
+  private Long id;
+  private String title;
+  private String snippet;
+  private LocalDateTime createdAt;
+  private String category;
+  private long views;
 }