增强IM聊天功能，支持群聊会话的打开与处理，优化消息过滤逻辑，提升用户体验。

jeecgboot-vue3/src/views/system/message/components/SysMessageList.vue

@@ -223,10 +223,19 @@
       async function showMessageDetail(record){
         if (isImChatNotice(record)) {
           //update-begin---author:xsl ---date:20260528 for：【IM聊天-OA】统一 IM 打开入口，全页优先-----------
+          //update-begin---author:cursor ---date:20260529 for：【IM聊天-OA】全部消息支持打开群聊会话-----------
+          if (record.imConvType === 'group') {
+            const mode = await openImChat({ conversationId: record.imConversationId });
+            if (mode === 'modal') {
+              openImChatModal(true, { conversationId: record.imConversationId });
+            }
+          } else {
             const mode = await openImChat({ targetUserId: record.imTargetUserId, pageContext: null });
             if (mode === 'modal') {
               openImChatModal(true, { targetUserId: record.imTargetUserId, pageContext: null });
             }
+          }
+          //update-end---author:cursor ---date:20260529 for：【IM聊天-OA】全部消息支持打开群聊会话-----------
           //update-end---author:xsl ---date:20260528 for：【IM聊天-OA】统一 IM 打开入口，全页优先-----------
           emit('close-modal');
           return;

jeecgboot-vue3/src/views/system/message/components/imChatNoticeAdapter.ts

@@ -1,5 +1,7 @@
 import dayjs, { Dayjs } from 'dayjs';
-import { fetchDeptMembers } from '/@/views/system/im/im.api';
+//update-begin---author:cursor ---date:20260529 for：【IM聊天-OA】全部消息补充群聊提醒-----------
+import { fetchDeptMembers, fetchGroups } from '/@/views/system/im/im.api';
+//update-end---author:cursor ---date:20260529 for：【IM聊天-OA】全部消息补充群聊提醒-----------
 import { formatImMessagePreview } from '/@/views/system/im/imMessageUtil';
 
 export const IM_CHAT_BUS_TYPE = 'im_chat';
@@ -27,6 +29,12 @@ export interface ImChatNoticeRecord {
   imTargetUsername?: string;
   imAvatar?: string;
   imUnreadCount?: number;
+  //update-begin---author:cursor ---date:20260529 for：【IM聊天-OA】全部消息补充群聊提醒-----------
+  /** 会话类型：single 单聊 / group 群聊 */
+  imConvType?: 'single' | 'group';
+  /** 群聊会话 ID（群聊提醒打开会话时使用） */
+  imConversationId?: string;
+  //update-end---author:cursor ---date:20260529 for：【IM聊天-OA】全部消息补充群聊提醒-----------
 }
 
 interface ImContactLike {
@@ -40,6 +48,16 @@ interface ImContactLike {
   unreadCount?: number;
 }
 
+//update-begin---author:cursor ---date:20260529 for：【IM聊天-OA】全部消息补充群聊提醒-----------
+interface ImGroupLike {
+  conversationId: string;
+  groupName?: string;
+  lastContent?: string;
+  lastTime?: string;
+  unreadCount?: number;
+}
+//update-end---author:cursor ---date:20260529 for：【IM聊天-OA】全部消息补充群聊提醒-----------
+
 /** 标星列表不包含 IM；全部消息或未指定类型、聊天类型时合并 IM */
 export function shouldIncludeImChatInList(params: ImChatSearchParams) {
   if (params.starFlag === '1') {
@@ -142,14 +160,49 @@ export function mapImContactToNotice(contact: ImContactLike): ImChatNoticeRecord
     imTargetUsername: contact.username,
     imAvatar: contact.avatar,
     imUnreadCount: contact.unreadCount || 0,
+    //update-begin---author:cursor ---date:20260529 for：【IM聊天-OA】全部消息补充群聊提醒-----------
+    imConvType: 'single',
+    //update-end---author:cursor ---date:20260529 for：【IM聊天-OA】全部消息补充群聊提醒-----------
   };
 }
 
-export function filterImChatNotices(contacts: ImContactLike[], params: ImChatSearchParams) {
+//update-begin---author:cursor ---date:20260529 for：【IM聊天-OA】全部消息补充群聊提醒-----------
-  let list = (contacts || [])
+/** 将群聊会话映射为聊天提醒记录 */
+export function mapImGroupToNotice(group: ImGroupLike): ImChatNoticeRecord | null {
+  if (!group?.conversationId || !group?.lastTime) {
+    return null;
+  }
+  const name = group.groupName || '群聊';
+  const preview = formatImMessagePreview(group.lastContent) || '发来一条新消息';
+  const timeText = dayjs(group.lastTime).isValid() ? dayjs(group.lastTime).format('YYYY-MM-DD HH:mm:ss') : String(group.lastTime);
+  return {
+    id: `im_chat_group_${group.conversationId}`,
+    busType: IM_CHAT_BUS_TYPE,
+    titile: `${name}：${preview}`,
+    msgContent: preview,
+    sendTime: timeText,
+    createTime: timeText,
+    readFlag: (group.unreadCount || 0) > 0 ? '0' : '1',
+    noticeType: IM_CHAT_NOTICE_TYPE,
+    starFlag: '0',
+    imTargetUserId: '',
+    imUnreadCount: group.unreadCount || 0,
+    imConvType: 'group',
+    imConversationId: group.conversationId,
+  };
+}
+
+export function filterImChatNotices(contacts: ImContactLike[], groups: ImGroupLike[], params: ImChatSearchParams) {
+  const singleList = (contacts || [])
     .map(mapImContactToNotice)
-    .filter((item): item is ImChatNoticeRecord => !!item)
+    .filter((item): item is ImChatNoticeRecord => !!item);
-    .filter((item) => isInRange(item.sendTime, params.rangeDateKey, params.rangeDate));
+
+  // 指定发件人筛选时，仅匹配单聊（群聊不属于单个发件人）
+  const groupList = params.fromUser
+    ? []
+    : (groups || []).map(mapImGroupToNotice).filter((item): item is ImChatNoticeRecord => !!item);
+
+  let list = [...singleList, ...groupList].filter((item) => isInRange(item.sendTime, params.rangeDateKey, params.rangeDate));
 
   if (params.fromUser) {
     list = list.filter((item) => item.imTargetUsername === params.fromUser || item.imTargetUserId === params.fromUser);
@@ -159,9 +212,13 @@ export function filterImChatNotices(contacts: ImContactLike[], params: ImChatSea
 }
 
 export async function fetchImChatNoticeList(params: ImChatSearchParams) {
-  const contacts = ((await fetchDeptMembers()) || []) as ImContactLike[];
+  const [contacts, groups] = (await Promise.all([
-  return filterImChatNotices(contacts, params);
+    Promise.resolve(fetchDeptMembers()).catch(() => []),
+    Promise.resolve(fetchGroups()).catch(() => []),
+  ])) as [ImContactLike[], ImGroupLike[]];
+  return filterImChatNotices(contacts || [], groups || [], params);
 }
+//update-end---author:cursor ---date:20260529 for：【IM聊天-OA】全部消息补充群聊提醒-----------
 
 export function mergeMessageList(systemList: any[] = [], imList: ImChatNoticeRecord[] = []) {
   if (!imList.length) {