feat: add signed PostgreSQL release updates

oa-backend/src/main/java/com/kaidi/oa/domain/IpAsset.java

@@ -7,7 +7,7 @@ import jakarta.persistence.Entity;
 import jakarta.persistence.GeneratedValue;
 import jakarta.persistence.GenerationType;
 import jakarta.persistence.Id;
-import jakarta.persistence.Lob;
+import jakarta.persistence.Column;
 import jakarta.persistence.Table;
 
 /**
@@ -92,7 +92,7 @@ public class IpAsset {
     /** 责任人（IP 部门跟案人）。 */
     private String owner;
 
-    @Lob
+    @Column(columnDefinition = "TEXT")
     private String remark;
 
     private Instant createdAt;