feat(oa): 添加 AI 消息展示类型字段

- 在 SysOaAiMessage、SysOaAiMessageBo、SysOaAiMessageVo 中添加 renderType 字段
- 在 SysOaAiMessageMapper.xml 中更新映射配置- 用于支持 AI 消息的多种展示类型，如文本、图片等

ruoyi-oa/src/main/java/com/ruoyi/oa/domain/SysOaAiMessage.java

@@ -45,6 +45,11 @@ public class SysOaAiMessage extends BaseEntity {
      */
     private String content;
 
+    /**
+     * 展示类型
+     */
+    private String renderType;
+
     /**
      * 消耗token数
      */

ruoyi-oa/src/main/java/com/ruoyi/oa/domain/bo/SysOaAiMessageBo.java

@@ -44,6 +44,11 @@ public class SysOaAiMessageBo extends BaseEntity {
     @NotBlank(message = "消息内容不能为空", groups = { AddGroup.class, EditGroup.class })
     private String content;
 
+    /**
+     * 展示类型
+     */
+    private String renderType;
+
     /**
      * 消耗token数
      */

ruoyi-oa/src/main/java/com/ruoyi/oa/domain/vo/SysOaAiMessageVo.java

@@ -47,6 +47,12 @@ public class SysOaAiMessageVo implements Serializable {
     @ExcelProperty(value = "消息内容")
     private String content;
 
+    /**
+     * 展示类型
+     */
+    @ExcelProperty(value = "展示类型")
+    private String renderType;
+
     /**
      * 消耗token数
      */

ruoyi-oa/src/main/resources/mapper/oa/SysOaAiMessageMapper.xml

@@ -9,6 +9,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         <result property="conversationId" column="conversation_id"/>
         <result property="role" column="role"/>
         <result property="content" column="content"/>
+        <result property="renderType" column="render_type"/>
         <result property="tokens" column="tokens"/>
         <result property="cost" column="cost"/>
         <result property="messageOrder" column="message_order"/>
@@ -17,7 +18,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
     </resultMap>
 
     <sql id="selectSysOaAiMessageVo">
-        select message_id, conversation_id, role, content, tokens, cost, message_order, create_time, create_by
+        select message_id, conversation_id, role, content, render_type, tokens, cost, message_order, create_time, create_by
         from sys_oa_ai_message
     </sql>