diff --git a/apps/web-antd/src/views/im/home/components/rtc/rtc-group-call-banner.vue b/apps/web-antd/src/views/im/home/components/rtc/rtc-group-call-banner.vue
index 95c217c35..426fd66d3 100644
--- a/apps/web-antd/src/views/im/home/components/rtc/rtc-group-call-banner.vue
+++ b/apps/web-antd/src/views/im/home/components/rtc/rtc-group-call-banner.vue
@@ -11,6 +11,7 @@ import { getActiveCall, joinCall } from '#/api/im/rtc'
 import { getCurrentUserId } from '#/views/im/utils/auth'
 
 import { useGroupCallMembers } from '../../composables/useGroupCallMembers'
+import { useGroupStore } from '../../store/groupStore'
 import { useRtcStore } from '../../store/rtcStore'
 import { UserAvatar } from '../user'
 
@@ -21,6 +22,7 @@ const props = defineProps<{
 }>()
 
 const rtcStore = useRtcStore()
+const groupStore = useGroupStore()
 
 const popoverVisible = ref(false)
 
@@ -40,24 +42,48 @@ const pillText = computed(() => {
  * 用 [groupId, room] 双源监听 + 已填充守卫，避免切群 / 首次填充触发的双次重复拉取
  */
 watch(
-  () => [props.groupId, activeCall.value?.room] as const,
+  () =>
+    [
+      props.groupId,
+      activeCall.value?.room,
+      groupStore.isGroupActiveCallExpired(props.groupId)
+    ] as const,
   async ([groupId, room], oldValues) => {
-    if (!groupId || !activeCall.value) {
+    if (!groupId) {
       return
     }
 
-    // 决策是否需要拉取：仅补齐本地已有通话；没有本地通话时等待实时事件创建
+    if (!activeCall.value) {
+      if (!groupStore.isGroupActiveCallExpired(groupId)) {
+        return
+      }
+      try {
+        const data = await getActiveCall(groupId)
+        if (data) {
+          rtcStore.setGroupCall(data, true)
+        } else {
+          rtcStore.removeGroupCall(groupId)
+        }
+      } catch (error) {
+        console.warn('[GroupCallBanner] getActiveCall 失败', { groupId }, error)
+      }
+      return
+    }
+
+    // 决策是否需要拉取：补齐本地已有通话；没有本地通话时按群缓存过期状态懒探测一次
     const groupChanged = !oldValues || oldValues[0] !== groupId
     const roomChanged = oldValues && oldValues[1] !== room
     const participantsLoaded = (activeCall.value?.joinedUserIds?.length ?? 0) > 1
+    const activeCallExpired = groupStore.isGroupActiveCallExpired(groupId)
     if (
-      rtcStore.isGroupCallParticipantsLoaded(groupId, room) ||
-      (!groupChanged && !roomChanged && participantsLoaded)
+      !activeCallExpired &&
+      (rtcStore.isGroupCallParticipantsLoaded(groupId, room) ||
+        (!groupChanged && !roomChanged && participantsLoaded))
     ) {
       return
     }
 
-    // 拉最新参与者写回 store；接口返回空 → 该群已无活跃通话
+    // 拉最新参与者写回 store；接口返回空 → 该群已无活跃通话，移除本地缓存
     try {
       const data = await getActiveCall(groupId)
       if (data) {
diff --git a/apps/web-antd/src/views/im/home/composables/useMessagePuller.ts b/apps/web-antd/src/views/im/home/composables/useMessagePuller.ts
index 14d87715a..95cf36db0 100644
--- a/apps/web-antd/src/views/im/home/composables/useMessagePuller.ts
+++ b/apps/web-antd/src/views/im/home/composables/useMessagePuller.ts
@@ -290,6 +290,7 @@ export const useMessagePuller = () => {
     // 1. 清理连接级缓存
     messageStore.clearPrivateReadMaxIdCache()
     rtcStore.clearGroupCallCache()
+    groupStore.markAllGroupActiveCallsExpired()
     groupStore.markAllGroupInfoExpired()
     groupStore.markAllGroupMembersExpired()
     // 2. 并发补偿远端状态
diff --git a/apps/web-antd/src/views/im/home/composables/useMessageSender.ts b/apps/web-antd/src/views/im/home/composables/useMessageSender.ts
index 230f273b9..456212817 100644
--- a/apps/web-antd/src/views/im/home/composables/useMessageSender.ts
+++ b/apps/web-antd/src/views/im/home/composables/useMessageSender.ts
@@ -240,12 +240,12 @@ export const useMessageSender = () => {
       }
     }
     const maxMessageId = Math.max(loadedMaxMessageId, conversation.lastMessageId || 0)
-    const readCovered = conversationStore.isReadPositionCovered(
+    const readReported = conversationStore.isReportedReadPositionCovered(
       conversation.type,
       conversation.targetId,
       maxMessageId
     )
-    if (readCovered) {
+    if (readReported) {
       conversationStore.markConversationRead(conversation.type, conversation.targetId)
       return
     }
@@ -275,6 +275,11 @@ export const useMessageSender = () => {
       } else {
         await apiReadChannelMessages(conversation.targetId, maxMessageId)
       }
+      conversationStore.markConversationReadReported(
+        conversation.type,
+        conversation.targetId,
+        maxMessageId
+      )
     } catch (error) {
       console.error(
         '[IM] 标记已读失败',
diff --git a/apps/web-antd/src/views/im/home/index.vue b/apps/web-antd/src/views/im/home/index.vue
index ca7a64c1c..c9a408722 100644
--- a/apps/web-antd/src/views/im/home/index.vue
+++ b/apps/web-antd/src/views/im/home/index.vue
@@ -61,6 +61,7 @@ onMounted(async () => {
     const hasFriendRows = cacheResults[2]
     const hasGroupRows = cacheResults[3]
     const hasChannelRows = cacheResults[4]
+    groupStore.markAllGroupActiveCallsExpired()
     groupStore.markAllGroupMembersExpired()
     childRouteReady.value = true
     // 1.4 我管理的群下未处理加群申请红点：首登用 unhandled-list（服务端直接过滤未处理，语义精准、启动轻）；
diff --git a/apps/web-antd/src/views/im/home/store/conversationStore.ts b/apps/web-antd/src/views/im/home/store/conversationStore.ts
index a834806d0..d96c6a777 100644
--- a/apps/web-antd/src/views/im/home/store/conversationStore.ts
+++ b/apps/web-antd/src/views/im/home/store/conversationStore.ts
@@ -27,7 +27,19 @@ import { useMessageStore } from './messageStore'
 const PERSIST_DRAFT_DEBOUNCE_MS = 500
 const pendingDraftConversations = new Set<Conversation>()
 
-type LegacyConversationDO = ConversationDO & { readMessageId?: number }
+/** 创建会话读位置记录 */
+function createConversationRead(
+  type: number,
+  targetId: number,
+  messageId: number
+): ConversationRead {
+  return {
+    conversationType: type,
+    targetId,
+    messageId,
+    updateTime: Date.now()
+  }
+}
 
 /** 创建草稿保存防抖函数 */
 function createDraftDebounce(fn: () => void, wait: number) {
@@ -75,6 +87,7 @@ function toConversationDO(conversation: Conversation): ConversationDO {
     lastReceiptStatus: conversation.lastReceiptStatus,
     lastSelfSend: conversation.lastSelfSend,
     lastSenderDisplayName: conversation.lastSenderDisplayName,
+    readMessageId: conversation.readMessageId,
     deleted: conversation.deleted,
     top: conversation.top,
     silent: conversation.silent,
@@ -86,10 +99,9 @@ function toConversationDO(conversation: Conversation): ConversationDO {
 }
 
 /** IndexedDB 记录转会话 */
-function fromConversationDO(conversation: LegacyConversationDO): Conversation {
+function fromConversationDO(conversation: ConversationDO): Conversation {
   const {
     clientConversationId: _clientConversationId,
-    readMessageId: _readMessageId,
     ...rest
   } = conversation
   return rest
@@ -207,34 +219,10 @@ export const useConversationStore = defineStore('imConversationStore', {
         const item = fromConversationReadDO(record)
         nextConversationReads[getClientConversationId(item.conversationType, item.targetId)] = item
       }
-      const migratedReads: ConversationRead[] = []
-      for (const conversation of conversations as LegacyConversationDO[]) {
-        if (!conversation.readMessageId) {
-          continue
-        }
-        const key = getClientConversationId(conversation.type, conversation.targetId)
-        if (nextConversationReads[key]) {
-          continue
-        }
-        const record = {
-          conversationType: conversation.type,
-          targetId: conversation.targetId,
-          messageId: conversation.readMessageId
-        }
-        nextConversationReads[key] = record
-        migratedReads.push(record)
-      }
-      const nextConversations = (conversations as LegacyConversationDO[]).map((conversation) =>
-        fromConversationDO(conversation)
-      )
+      const nextConversations = conversations.map((conversation) => fromConversationDO(conversation))
       this.conversationReads = nextConversationReads
       await this.applyLocalConversationReads(nextConversations)
       this.conversations = nextConversations
-      if (migratedReads.length > 0) {
-        void this.saveConversationReadRecord(migratedReads).catch((error) =>
-          console.warn('[IM conversationStore] 会话读位置迁移失败', error)
-        )
-      }
       if (Array.isArray(recent)) {
         this.recentForwardConversationKeys = recent.slice(0, CONVERSATION_RECENT_FORWARD_MAX)
       }
@@ -344,6 +332,15 @@ export const useConversationStore = defineStore('imConversationStore', {
       return !!record && record.messageId >= messageId
     },
 
+    /** 判断服务端已读位置是否覆盖消息编号 */
+    isReportedReadPositionCovered(type: number, targetId: number, messageId?: number): boolean {
+      if (!messageId) {
+        return false
+      }
+      const conversation = this.getConversation(type, targetId)
+      return (conversation?.readMessageId || 0) >= messageId
+    },
+
     /** 应用读位置到会话 */
     applyReadToConversation(conversation: Conversation, messageId: number): boolean {
       if (!conversation.lastMessageId || conversation.lastMessageId > messageId) {
@@ -397,6 +394,11 @@ export const useConversationStore = defineStore('imConversationStore', {
         }
         const current = this.conversationReads[clientConversationId]
         const messageId = Math.max(record.messageId, current?.messageId || 0)
+        const conversation = this.getConversation(record.conversationType, record.targetId)
+        if (conversation && record.messageId > (conversation.readMessageId || 0)) {
+          conversation.readMessageId = record.messageId
+          changedConversations.set(clientConversationId, conversation)
+        }
         if (!current || messageId > current.messageId) {
           const next = {
             conversationType: record.conversationType,
@@ -408,7 +410,6 @@ export const useConversationStore = defineStore('imConversationStore', {
           changedReads.set(clientConversationId, next)
         }
 
-        const conversation = this.getConversation(record.conversationType, record.targetId)
         if (conversation && this.applyReadToConversation(conversation, messageId)) {
           changedConversations.set(clientConversationId, conversation)
         } else if (conversation) {
@@ -690,7 +691,7 @@ export const useConversationStore = defineStore('imConversationStore', {
     },
 
     /** 标记会话已读 */
-    markConversationRead(type: number, targetId: number, messageId?: number) {
+    markConversationRead(type: number, targetId: number, messageId?: number): void {
       const conversation = this.getConversation(type, targetId)
       if (!conversation) {
         return
@@ -717,12 +718,36 @@ export const useConversationStore = defineStore('imConversationStore', {
             await this.saveConversationRecord(conversation, tx)
             await this.saveConversationReadRecord(record, tx)
           })
-          .catch((error) => console.warn('[IM conversationStore] 会话已读写入失败', error))
+          .catch((error) =>
+            console.warn(
+              '[IM conversationStore] 会话已读写入失败',
+              {
+                conversationType: type,
+                targetId,
+                messageId,
+                conversationKey: key
+              },
+              error
+            )
+          )
         return
       }
       this.saveConversation(conversation)
     },
 
+    /** 标记会话已上报服务端读位置 */
+    markConversationReadReported(type: number, targetId: number, messageId?: number): void {
+      if (!messageId) {
+        return
+      }
+      const conversation = this.getConversation(type, targetId)
+      if (!conversation || messageId <= (conversation.readMessageId || 0)) {
+        return
+      }
+      conversation.readMessageId = messageId
+      this.saveConversation(conversation)
+    },
+
     // ==================== 最近转发 ====================
 
     /** 推送最近转发会话 */
diff --git a/apps/web-antd/src/views/im/home/store/groupStore.ts b/apps/web-antd/src/views/im/home/store/groupStore.ts
index e745fe70b..8db5512fd 100644
--- a/apps/web-antd/src/views/im/home/store/groupStore.ts
+++ b/apps/web-antd/src/views/im/home/store/groupStore.ts
@@ -47,6 +47,8 @@ const pendingSingleMemberKey = (userId: number, groupId: number, memberUserId: n
 /** 构建群 IndexedDB 记录 */
 function buildGroupDO(group: Group): GroupDO {
   const {
+    activeCallExpired: _activeCallExpired,
+    activeCallLoaded: _activeCallLoaded,
     infoLoaded: _infoLoaded,
     members: _members,
     membersLoaded: _membersLoaded,
@@ -229,11 +231,13 @@ export const useGroupStore = defineStore('imGroupStore', {
       this.groups = fresh.map((group) => {
         const existing = groupMap.get(group.id)
         if (!existing) {
-          return { ...group, infoLoaded: true }
+          return { ...group, activeCallExpired: true, infoLoaded: true }
         }
         return {
           ...group,
           infoLoaded: true,
+          activeCallExpired: existing.activeCallExpired,
+          activeCallLoaded: existing.activeCallLoaded,
           members: existing.members,
           memberCount: existing.memberCount ?? group.memberCount,
           membersLoaded: existing.membersLoaded,
@@ -287,6 +291,29 @@ export const useGroupStore = defineStore('imGroupStore', {
       }
     },
 
+    /** 失效全部群通话探测缓存 */
+    markAllGroupActiveCallsExpired() {
+      for (const group of this.groups) {
+        group.activeCallExpired = true
+      }
+    },
+
+    /** 标记群通话探测已加载 */
+    markGroupActiveCallLoaded(groupId: number) {
+      const group = this.getGroup(groupId)
+      if (!group) {
+        return
+      }
+      group.activeCallLoaded = true
+      group.activeCallExpired = false
+    },
+
+    /** 判断群通话是否需要重新探测 */
+    isGroupActiveCallExpired(groupId: number): boolean {
+      const group = this.getGroup(groupId)
+      return !group?.activeCallLoaded || !!group.activeCallExpired
+    },
+
     /** 失效指定群成员缓存 */
     markGroupMembersExpired(groupId: number) {
       const group = this.getGroup(groupId)
diff --git a/apps/web-antd/src/views/im/home/store/rtcStore.ts b/apps/web-antd/src/views/im/home/store/rtcStore.ts
index 2e10479d8..4922a6b75 100644
--- a/apps/web-antd/src/views/im/home/store/rtcStore.ts
+++ b/apps/web-antd/src/views/im/home/store/rtcStore.ts
@@ -260,6 +260,7 @@ export const useRtcStore = defineStore('imRtc', () => {
     if (!payload?.groupId) {
       return
     }
+    useGroupStore().markGroupActiveCallLoaded(payload.groupId)
     // 浅比较：room / mediaType / joinedUserIds / inviteeIds 都没变就跳过，避免下游 watcher 无意义重算
     const existing = groupActiveCalls.value.get(payload.groupId)
     const nextParticipantsLoaded = participantsLoaded ?? !!existing?.participantsLoaded
@@ -320,7 +321,11 @@ export const useRtcStore = defineStore('imRtc', () => {
 
   /** 群通话结束：从 groupActiveCalls 移除；胶囊条消失 */
   function removeGroupCall(groupId: number) {
+    if (!groupId) {
+      return
+    }
     clearGroupCallCache(groupId)
+    useGroupStore().markGroupActiveCallLoaded(groupId)
   }
 
   /** 获取群当前活跃通话；用于胶囊条按 groupId 查询 */
diff --git a/apps/web-antd/src/views/im/home/store/websocketStore.ts b/apps/web-antd/src/views/im/home/store/websocketStore.ts
index 3cc0abe6c..2a320db32 100644
--- a/apps/web-antd/src/views/im/home/store/websocketStore.ts
+++ b/apps/web-antd/src/views/im/home/store/websocketStore.ts
@@ -463,7 +463,7 @@ export const useImWebSocketStore = defineStore('imWebSocketStore', {
       )
       if (isActive) {
         // 窗口打开 = 已读：本端清未读 + 上报服务端读位置，避免读位置滞后
-        const readCovered = conversationStore.isReadPositionCovered(
+        const readReported = conversationStore.isReportedReadPositionCovered(
           ImConversationType.CHANNEL,
           websocketMessage.channelId,
           websocketMessage.id
@@ -471,10 +471,17 @@ export const useImWebSocketStore = defineStore('imWebSocketStore', {
         conversationStore.markConversationRead(
           ImConversationType.CHANNEL,
           websocketMessage.channelId,
-          readCovered ? undefined : websocketMessage.id
+          websocketMessage.id
         )
-        if (!readCovered) {
+        if (!readReported) {
           apiReadChannelMessages(websocketMessage.channelId, websocketMessage.id)
+            .then(() =>
+              conversationStore.markConversationReadReported(
+                ImConversationType.CHANNEL,
+                websocketMessage.channelId,
+                websocketMessage.id
+              )
+            )
             .catch((error) => {
               console.warn(
                 '[IM WS] 频道自动已读上报失败',
@@ -678,7 +685,7 @@ export const useImWebSocketStore = defineStore('imWebSocketStore', {
         if (isActive) {
           // 聊天窗口打开 = 实际看到了：本端清未读；私聊已读开启时再上报后端，让对方 UI 立刻切到"已读"
           // 已读位置直接用刚到的消息 id（这条就是当前会话最大 id）
-          const readCovered = conversationStore.isReadPositionCovered(
+          const readReported = conversationStore.isReportedReadPositionCovered(
             ImConversationType.PRIVATE,
             peerId,
             websocketMessage.id
@@ -686,10 +693,17 @@ export const useImWebSocketStore = defineStore('imWebSocketStore', {
           conversationStore.markConversationRead(
             ImConversationType.PRIVATE,
             peerId,
-            readCovered ? undefined : websocketMessage.id
+            websocketMessage.id
           )
-          if (MESSAGE_PRIVATE_READ_ENABLED && !readCovered) {
+          if (MESSAGE_PRIVATE_READ_ENABLED && !readReported) {
             apiReadPrivateMessages(peerId, websocketMessage.id)
+              .then(() =>
+                conversationStore.markConversationReadReported(
+                  ImConversationType.PRIVATE,
+                  peerId,
+                  websocketMessage.id
+                )
+              )
               .catch((error) => {
                 console.warn(
                   '[IM WS] 私聊自动已读上报失败',
@@ -831,7 +845,7 @@ export const useImWebSocketStore = defineStore('imWebSocketStore', {
           conversationStore.activeConversation?.targetId === websocketMessage.groupId
         if (isActive) {
           // 群已读上报需要带 messageId（群消息以"读到第几条"的游标为准，区别于私聊只标 receiverId）；群已读关闭时仅本地清零
-          const readCovered = conversationStore.isReadPositionCovered(
+          const readReported = conversationStore.isReportedReadPositionCovered(
             ImConversationType.GROUP,
             websocketMessage.groupId,
             websocketMessage.id
@@ -839,10 +853,17 @@ export const useImWebSocketStore = defineStore('imWebSocketStore', {
           conversationStore.markConversationRead(
             ImConversationType.GROUP,
             websocketMessage.groupId,
-            readCovered ? undefined : websocketMessage.id
+            websocketMessage.id
           )
-          if (MESSAGE_GROUP_READ_ENABLED && !readCovered) {
+          if (MESSAGE_GROUP_READ_ENABLED && !readReported) {
             apiReadGroupMessages(websocketMessage.groupId, websocketMessage.id)
+              .then(() =>
+                conversationStore.markConversationReadReported(
+                  ImConversationType.GROUP,
+                  websocketMessage.groupId,
+                  websocketMessage.id
+                )
+              )
               .catch((error) => {
                 console.warn(
                   '[IM WS] 群聊自动已读上报失败',
diff --git a/apps/web-antd/src/views/im/home/types/index.ts b/apps/web-antd/src/views/im/home/types/index.ts
index 7af29ae76..303095d81 100644
--- a/apps/web-antd/src/views/im/home/types/index.ts
+++ b/apps/web-antd/src/views/im/home/types/index.ts
@@ -110,6 +110,7 @@ export interface Conversation {
   silent?: boolean // 是否免打扰（不展示未读徽标 + 不响提示音）
   atMe?: boolean // 群聊：是否有人 @我
   atAll?: boolean // 群聊：是否有人 @全体成员
+  readMessageId?: number // 已上报到服务端的最大已读消息编号
   draft?: {
     html: string // 输入框 HTML
     plain: string // 输入框纯文本
@@ -147,6 +148,7 @@ export interface Message {
 
 // ==================== IndexedDB 本地存储结构 ====================
 
+/** 会话 IndexedDB 存储结构 */
 export interface ConversationDO extends Conversation {
   clientConversationId: string // `${type}:${targetId}`
 }
@@ -158,16 +160,19 @@ export interface ConversationRead {
   updateTime?: number // 更新时间
 }
 
+/** 会话读位置 IndexedDB 存储结构 */
 export interface ConversationReadDO extends ConversationRead {
   clientConversationId: string // `${conversationType}:${targetId}`
 }
 
+/** 消息 IndexedDB 存储结构 */
 export interface MessageDO extends Omit<Message, '_ackMerging' | '_localFile' | 'uploadProgress'> {
   messageKey: string // `${conversationType}:${id}` 或 `client:${clientMessageId}`
   conversationType: number // 会话类型，对齐 ImConversationType
   clientConversationId: string // ConversationDO.clientConversationId
 }
 
+/** 设置 IndexedDB 存储结构 */
 export interface SettingDO<T = unknown> {
   key: string
   value: T
@@ -195,12 +200,18 @@ export interface Group {
   groupRemark?: string // 群备注。从当前用户的 GroupMember 回填（当前用户对该群的自定义名）
   members?: GroupMember[] // 群成员缓存（按需懒加载）
   infoLoaded?: boolean // 群详情是否已加载，本轮会话内存标记，不持久化
+  activeCallLoaded?: boolean // 群活跃通话是否已探测，本轮会话内存标记，不持久化
+  activeCallExpired?: boolean // 群活跃通话探测是否已过期
   membersLoaded?: boolean // members 是否"完整加载"——只有整群 loadGroupMemberList / fetchGroupMemberList 命中时为 true；fetchGroupMember 单成员补齐不置位，避免 fetchGroupMemberList(force=false) 命中缓存时误判整群已加载
   membersExpired?: boolean // 群成员缓存是否已过期；重连 / 重新进入 IM 后只标记不删除，下次进入群会话再刷新
   memberCount?: number // 成员总数
 }
 
-export type GroupDO = Omit<Group, 'infoLoaded' | 'members' | 'membersExpired' | 'membersLoaded'>
+/** 群 IndexedDB 存储结构 */
+export type GroupDO = Omit<
+  Group,
+  'activeCallExpired' | 'activeCallLoaded' | 'infoLoaded' | 'members' | 'membersExpired' | 'membersLoaded'
+>
 
 // 群成员实体（前端内部结构）
 export interface GroupMember {
diff --git a/apps/web-antdv-next/src/views/im/home/components/rtc/rtc-group-call-banner.vue b/apps/web-antdv-next/src/views/im/home/components/rtc/rtc-group-call-banner.vue
index 5b57de8c7..e7aabcced 100644
--- a/apps/web-antdv-next/src/views/im/home/components/rtc/rtc-group-call-banner.vue
+++ b/apps/web-antdv-next/src/views/im/home/components/rtc/rtc-group-call-banner.vue
@@ -11,6 +11,7 @@ import { getActiveCall, joinCall } from '#/api/im/rtc'
 import { getCurrentUserId } from '#/views/im/utils/auth'
 
 import { useGroupCallMembers } from '../../composables/useGroupCallMembers'
+import { useGroupStore } from '../../store/groupStore'
 import { useRtcStore } from '../../store/rtcStore'
 import { UserAvatar } from '../user'
 
@@ -21,6 +22,7 @@ const props = defineProps<{
 }>()
 
 const rtcStore = useRtcStore()
+const groupStore = useGroupStore()
 
 const popoverVisible = ref(false)
 
@@ -40,24 +42,48 @@ const pillText = computed(() => {
  * 用 [groupId, room] 双源监听 + 已填充守卫，避免切群 / 首次填充触发的双次重复拉取
  */
 watch(
-  () => [props.groupId, activeCall.value?.room] as const,
+  () =>
+    [
+      props.groupId,
+      activeCall.value?.room,
+      groupStore.isGroupActiveCallExpired(props.groupId)
+    ] as const,
   async ([groupId, room], oldValues) => {
-    if (!groupId || !activeCall.value) {
+    if (!groupId) {
       return
     }
 
-    // 决策是否需要拉取：仅补齐本地已有通话；没有本地通话时等待实时事件创建
+    if (!activeCall.value) {
+      if (!groupStore.isGroupActiveCallExpired(groupId)) {
+        return
+      }
+      try {
+        const data = await getActiveCall(groupId)
+        if (data) {
+          rtcStore.setGroupCall(data, true)
+        } else {
+          rtcStore.removeGroupCall(groupId)
+        }
+      } catch (error) {
+        console.warn('[GroupCallBanner] getActiveCall 失败', { groupId }, error)
+      }
+      return
+    }
+
+    // 决策是否需要拉取：补齐本地已有通话；没有本地通话时按群缓存过期状态懒探测一次
     const groupChanged = !oldValues || oldValues[0] !== groupId
     const roomChanged = oldValues && oldValues[1] !== room
     const participantsLoaded = (activeCall.value?.joinedUserIds?.length ?? 0) > 1
+    const activeCallExpired = groupStore.isGroupActiveCallExpired(groupId)
     if (
-      rtcStore.isGroupCallParticipantsLoaded(groupId, room) ||
-      (!groupChanged && !roomChanged && participantsLoaded)
+      !activeCallExpired &&
+      (rtcStore.isGroupCallParticipantsLoaded(groupId, room) ||
+        (!groupChanged && !roomChanged && participantsLoaded))
     ) {
       return
     }
 
-    // 拉最新参与者写回 store；接口返回空 → 该群已无活跃通话
+    // 拉最新参与者写回 store；接口返回空 → 该群已无活跃通话，移除本地缓存
     try {
       const data = await getActiveCall(groupId)
       if (data) {
diff --git a/apps/web-antdv-next/src/views/im/home/composables/useMessagePuller.ts b/apps/web-antdv-next/src/views/im/home/composables/useMessagePuller.ts
index 14d87715a..95cf36db0 100644
--- a/apps/web-antdv-next/src/views/im/home/composables/useMessagePuller.ts
+++ b/apps/web-antdv-next/src/views/im/home/composables/useMessagePuller.ts
@@ -290,6 +290,7 @@ export const useMessagePuller = () => {
     // 1. 清理连接级缓存
     messageStore.clearPrivateReadMaxIdCache()
     rtcStore.clearGroupCallCache()
+    groupStore.markAllGroupActiveCallsExpired()
     groupStore.markAllGroupInfoExpired()
     groupStore.markAllGroupMembersExpired()
     // 2. 并发补偿远端状态
diff --git a/apps/web-antdv-next/src/views/im/home/composables/useMessageSender.ts b/apps/web-antdv-next/src/views/im/home/composables/useMessageSender.ts
index 230f273b9..456212817 100644
--- a/apps/web-antdv-next/src/views/im/home/composables/useMessageSender.ts
+++ b/apps/web-antdv-next/src/views/im/home/composables/useMessageSender.ts
@@ -240,12 +240,12 @@ export const useMessageSender = () => {
       }
     }
     const maxMessageId = Math.max(loadedMaxMessageId, conversation.lastMessageId || 0)
-    const readCovered = conversationStore.isReadPositionCovered(
+    const readReported = conversationStore.isReportedReadPositionCovered(
       conversation.type,
       conversation.targetId,
       maxMessageId
     )
-    if (readCovered) {
+    if (readReported) {
       conversationStore.markConversationRead(conversation.type, conversation.targetId)
       return
     }
@@ -275,6 +275,11 @@ export const useMessageSender = () => {
       } else {
         await apiReadChannelMessages(conversation.targetId, maxMessageId)
       }
+      conversationStore.markConversationReadReported(
+        conversation.type,
+        conversation.targetId,
+        maxMessageId
+      )
     } catch (error) {
       console.error(
         '[IM] 标记已读失败',
diff --git a/apps/web-antdv-next/src/views/im/home/index.vue b/apps/web-antdv-next/src/views/im/home/index.vue
index 19371af24..30b436390 100644
--- a/apps/web-antdv-next/src/views/im/home/index.vue
+++ b/apps/web-antdv-next/src/views/im/home/index.vue
@@ -61,6 +61,7 @@ onMounted(async () => {
     const hasFriendRows = cacheResults[2]
     const hasGroupRows = cacheResults[3]
     const hasChannelRows = cacheResults[4]
+    groupStore.markAllGroupActiveCallsExpired()
     groupStore.markAllGroupMembersExpired()
     childRouteReady.value = true
     // 1.4 我管理的群下未处理加群申请红点：首登用 unhandled-list（服务端直接过滤未处理，语义精准、启动轻）；
diff --git a/apps/web-antdv-next/src/views/im/home/store/conversationStore.ts b/apps/web-antdv-next/src/views/im/home/store/conversationStore.ts
index b826d3036..d96c6a777 100644
--- a/apps/web-antdv-next/src/views/im/home/store/conversationStore.ts
+++ b/apps/web-antdv-next/src/views/im/home/store/conversationStore.ts
@@ -27,8 +27,6 @@ import { useMessageStore } from './messageStore'
 const PERSIST_DRAFT_DEBOUNCE_MS = 500
 const pendingDraftConversations = new Set<Conversation>()
 
-type LegacyConversationDO = ConversationDO & { readMessageId?: number }
-
 /** 创建会话读位置记录 */
 function createConversationRead(
   type: number,
@@ -89,6 +87,7 @@ function toConversationDO(conversation: Conversation): ConversationDO {
     lastReceiptStatus: conversation.lastReceiptStatus,
     lastSelfSend: conversation.lastSelfSend,
     lastSenderDisplayName: conversation.lastSenderDisplayName,
+    readMessageId: conversation.readMessageId,
     deleted: conversation.deleted,
     top: conversation.top,
     silent: conversation.silent,
@@ -100,10 +99,9 @@ function toConversationDO(conversation: Conversation): ConversationDO {
 }
 
 /** IndexedDB 记录转会话 */
-function fromConversationDO(conversation: LegacyConversationDO): Conversation {
+function fromConversationDO(conversation: ConversationDO): Conversation {
   const {
     clientConversationId: _clientConversationId,
-    readMessageId: _readMessageId,
     ...rest
   } = conversation
   return rest
@@ -221,34 +219,10 @@ export const useConversationStore = defineStore('imConversationStore', {
         const item = fromConversationReadDO(record)
         nextConversationReads[getClientConversationId(item.conversationType, item.targetId)] = item
       }
-      const migratedReads: ConversationRead[] = []
-      for (const conversation of conversations as LegacyConversationDO[]) {
-        if (!conversation.readMessageId) {
-          continue
-        }
-        const key = getClientConversationId(conversation.type, conversation.targetId)
-        if (nextConversationReads[key]) {
-          continue
-        }
-        const record = {
-          conversationType: conversation.type,
-          targetId: conversation.targetId,
-          messageId: conversation.readMessageId
-        }
-        nextConversationReads[key] = record
-        migratedReads.push(record)
-      }
-      const nextConversations = (conversations as LegacyConversationDO[]).map((conversation) =>
-        fromConversationDO(conversation)
-      )
+      const nextConversations = conversations.map((conversation) => fromConversationDO(conversation))
       this.conversationReads = nextConversationReads
       await this.applyLocalConversationReads(nextConversations)
       this.conversations = nextConversations
-      if (migratedReads.length > 0) {
-        void this.saveConversationReadRecord(migratedReads).catch((error) =>
-          console.warn('[IM conversationStore] 会话读位置迁移失败', error)
-        )
-      }
       if (Array.isArray(recent)) {
         this.recentForwardConversationKeys = recent.slice(0, CONVERSATION_RECENT_FORWARD_MAX)
       }
@@ -358,6 +332,15 @@ export const useConversationStore = defineStore('imConversationStore', {
       return !!record && record.messageId >= messageId
     },
 
+    /** 判断服务端已读位置是否覆盖消息编号 */
+    isReportedReadPositionCovered(type: number, targetId: number, messageId?: number): boolean {
+      if (!messageId) {
+        return false
+      }
+      const conversation = this.getConversation(type, targetId)
+      return (conversation?.readMessageId || 0) >= messageId
+    },
+
     /** 应用读位置到会话 */
     applyReadToConversation(conversation: Conversation, messageId: number): boolean {
       if (!conversation.lastMessageId || conversation.lastMessageId > messageId) {
@@ -411,6 +394,11 @@ export const useConversationStore = defineStore('imConversationStore', {
         }
         const current = this.conversationReads[clientConversationId]
         const messageId = Math.max(record.messageId, current?.messageId || 0)
+        const conversation = this.getConversation(record.conversationType, record.targetId)
+        if (conversation && record.messageId > (conversation.readMessageId || 0)) {
+          conversation.readMessageId = record.messageId
+          changedConversations.set(clientConversationId, conversation)
+        }
         if (!current || messageId > current.messageId) {
           const next = {
             conversationType: record.conversationType,
@@ -422,7 +410,6 @@ export const useConversationStore = defineStore('imConversationStore', {
           changedReads.set(clientConversationId, next)
         }
 
-        const conversation = this.getConversation(record.conversationType, record.targetId)
         if (conversation && this.applyReadToConversation(conversation, messageId)) {
           changedConversations.set(clientConversationId, conversation)
         } else if (conversation) {
@@ -748,6 +735,19 @@ export const useConversationStore = defineStore('imConversationStore', {
       this.saveConversation(conversation)
     },
 
+    /** 标记会话已上报服务端读位置 */
+    markConversationReadReported(type: number, targetId: number, messageId?: number): void {
+      if (!messageId) {
+        return
+      }
+      const conversation = this.getConversation(type, targetId)
+      if (!conversation || messageId <= (conversation.readMessageId || 0)) {
+        return
+      }
+      conversation.readMessageId = messageId
+      this.saveConversation(conversation)
+    },
+
     // ==================== 最近转发 ====================
 
     /** 推送最近转发会话 */
diff --git a/apps/web-antdv-next/src/views/im/home/store/groupStore.ts b/apps/web-antdv-next/src/views/im/home/store/groupStore.ts
index e745fe70b..8db5512fd 100644
--- a/apps/web-antdv-next/src/views/im/home/store/groupStore.ts
+++ b/apps/web-antdv-next/src/views/im/home/store/groupStore.ts
@@ -47,6 +47,8 @@ const pendingSingleMemberKey = (userId: number, groupId: number, memberUserId: n
 /** 构建群 IndexedDB 记录 */
 function buildGroupDO(group: Group): GroupDO {
   const {
+    activeCallExpired: _activeCallExpired,
+    activeCallLoaded: _activeCallLoaded,
     infoLoaded: _infoLoaded,
     members: _members,
     membersLoaded: _membersLoaded,
@@ -229,11 +231,13 @@ export const useGroupStore = defineStore('imGroupStore', {
       this.groups = fresh.map((group) => {
         const existing = groupMap.get(group.id)
         if (!existing) {
-          return { ...group, infoLoaded: true }
+          return { ...group, activeCallExpired: true, infoLoaded: true }
         }
         return {
           ...group,
           infoLoaded: true,
+          activeCallExpired: existing.activeCallExpired,
+          activeCallLoaded: existing.activeCallLoaded,
           members: existing.members,
           memberCount: existing.memberCount ?? group.memberCount,
           membersLoaded: existing.membersLoaded,
@@ -287,6 +291,29 @@ export const useGroupStore = defineStore('imGroupStore', {
       }
     },
 
+    /** 失效全部群通话探测缓存 */
+    markAllGroupActiveCallsExpired() {
+      for (const group of this.groups) {
+        group.activeCallExpired = true
+      }
+    },
+
+    /** 标记群通话探测已加载 */
+    markGroupActiveCallLoaded(groupId: number) {
+      const group = this.getGroup(groupId)
+      if (!group) {
+        return
+      }
+      group.activeCallLoaded = true
+      group.activeCallExpired = false
+    },
+
+    /** 判断群通话是否需要重新探测 */
+    isGroupActiveCallExpired(groupId: number): boolean {
+      const group = this.getGroup(groupId)
+      return !group?.activeCallLoaded || !!group.activeCallExpired
+    },
+
     /** 失效指定群成员缓存 */
     markGroupMembersExpired(groupId: number) {
       const group = this.getGroup(groupId)
diff --git a/apps/web-antdv-next/src/views/im/home/store/rtcStore.ts b/apps/web-antdv-next/src/views/im/home/store/rtcStore.ts
index 2e10479d8..4922a6b75 100644
--- a/apps/web-antdv-next/src/views/im/home/store/rtcStore.ts
+++ b/apps/web-antdv-next/src/views/im/home/store/rtcStore.ts
@@ -260,6 +260,7 @@ export const useRtcStore = defineStore('imRtc', () => {
     if (!payload?.groupId) {
       return
     }
+    useGroupStore().markGroupActiveCallLoaded(payload.groupId)
     // 浅比较：room / mediaType / joinedUserIds / inviteeIds 都没变就跳过，避免下游 watcher 无意义重算
     const existing = groupActiveCalls.value.get(payload.groupId)
     const nextParticipantsLoaded = participantsLoaded ?? !!existing?.participantsLoaded
@@ -320,7 +321,11 @@ export const useRtcStore = defineStore('imRtc', () => {
 
   /** 群通话结束：从 groupActiveCalls 移除；胶囊条消失 */
   function removeGroupCall(groupId: number) {
+    if (!groupId) {
+      return
+    }
     clearGroupCallCache(groupId)
+    useGroupStore().markGroupActiveCallLoaded(groupId)
   }
 
   /** 获取群当前活跃通话；用于胶囊条按 groupId 查询 */
diff --git a/apps/web-antdv-next/src/views/im/home/store/websocketStore.ts b/apps/web-antdv-next/src/views/im/home/store/websocketStore.ts
index 3cc0abe6c..2a320db32 100644
--- a/apps/web-antdv-next/src/views/im/home/store/websocketStore.ts
+++ b/apps/web-antdv-next/src/views/im/home/store/websocketStore.ts
@@ -463,7 +463,7 @@ export const useImWebSocketStore = defineStore('imWebSocketStore', {
       )
       if (isActive) {
         // 窗口打开 = 已读：本端清未读 + 上报服务端读位置，避免读位置滞后
-        const readCovered = conversationStore.isReadPositionCovered(
+        const readReported = conversationStore.isReportedReadPositionCovered(
           ImConversationType.CHANNEL,
           websocketMessage.channelId,
           websocketMessage.id
@@ -471,10 +471,17 @@ export const useImWebSocketStore = defineStore('imWebSocketStore', {
         conversationStore.markConversationRead(
           ImConversationType.CHANNEL,
           websocketMessage.channelId,
-          readCovered ? undefined : websocketMessage.id
+          websocketMessage.id
         )
-        if (!readCovered) {
+        if (!readReported) {
           apiReadChannelMessages(websocketMessage.channelId, websocketMessage.id)
+            .then(() =>
+              conversationStore.markConversationReadReported(
+                ImConversationType.CHANNEL,
+                websocketMessage.channelId,
+                websocketMessage.id
+              )
+            )
             .catch((error) => {
               console.warn(
                 '[IM WS] 频道自动已读上报失败',
@@ -678,7 +685,7 @@ export const useImWebSocketStore = defineStore('imWebSocketStore', {
         if (isActive) {
           // 聊天窗口打开 = 实际看到了：本端清未读；私聊已读开启时再上报后端，让对方 UI 立刻切到"已读"
           // 已读位置直接用刚到的消息 id（这条就是当前会话最大 id）
-          const readCovered = conversationStore.isReadPositionCovered(
+          const readReported = conversationStore.isReportedReadPositionCovered(
             ImConversationType.PRIVATE,
             peerId,
             websocketMessage.id
@@ -686,10 +693,17 @@ export const useImWebSocketStore = defineStore('imWebSocketStore', {
           conversationStore.markConversationRead(
             ImConversationType.PRIVATE,
             peerId,
-            readCovered ? undefined : websocketMessage.id
+            websocketMessage.id
           )
-          if (MESSAGE_PRIVATE_READ_ENABLED && !readCovered) {
+          if (MESSAGE_PRIVATE_READ_ENABLED && !readReported) {
             apiReadPrivateMessages(peerId, websocketMessage.id)
+              .then(() =>
+                conversationStore.markConversationReadReported(
+                  ImConversationType.PRIVATE,
+                  peerId,
+                  websocketMessage.id
+                )
+              )
               .catch((error) => {
                 console.warn(
                   '[IM WS] 私聊自动已读上报失败',
@@ -831,7 +845,7 @@ export const useImWebSocketStore = defineStore('imWebSocketStore', {
           conversationStore.activeConversation?.targetId === websocketMessage.groupId
         if (isActive) {
           // 群已读上报需要带 messageId（群消息以"读到第几条"的游标为准，区别于私聊只标 receiverId）；群已读关闭时仅本地清零
-          const readCovered = conversationStore.isReadPositionCovered(
+          const readReported = conversationStore.isReportedReadPositionCovered(
             ImConversationType.GROUP,
             websocketMessage.groupId,
             websocketMessage.id
@@ -839,10 +853,17 @@ export const useImWebSocketStore = defineStore('imWebSocketStore', {
           conversationStore.markConversationRead(
             ImConversationType.GROUP,
             websocketMessage.groupId,
-            readCovered ? undefined : websocketMessage.id
+            websocketMessage.id
           )
-          if (MESSAGE_GROUP_READ_ENABLED && !readCovered) {
+          if (MESSAGE_GROUP_READ_ENABLED && !readReported) {
             apiReadGroupMessages(websocketMessage.groupId, websocketMessage.id)
+              .then(() =>
+                conversationStore.markConversationReadReported(
+                  ImConversationType.GROUP,
+                  websocketMessage.groupId,
+                  websocketMessage.id
+                )
+              )
               .catch((error) => {
                 console.warn(
                   '[IM WS] 群聊自动已读上报失败',
diff --git a/apps/web-antdv-next/src/views/im/home/types/index.ts b/apps/web-antdv-next/src/views/im/home/types/index.ts
index 7af29ae76..303095d81 100644
--- a/apps/web-antdv-next/src/views/im/home/types/index.ts
+++ b/apps/web-antdv-next/src/views/im/home/types/index.ts
@@ -110,6 +110,7 @@ export interface Conversation {
   silent?: boolean // 是否免打扰（不展示未读徽标 + 不响提示音）
   atMe?: boolean // 群聊：是否有人 @我
   atAll?: boolean // 群聊：是否有人 @全体成员
+  readMessageId?: number // 已上报到服务端的最大已读消息编号
   draft?: {
     html: string // 输入框 HTML
     plain: string // 输入框纯文本
@@ -147,6 +148,7 @@ export interface Message {
 
 // ==================== IndexedDB 本地存储结构 ====================
 
+/** 会话 IndexedDB 存储结构 */
 export interface ConversationDO extends Conversation {
   clientConversationId: string // `${type}:${targetId}`
 }
@@ -158,16 +160,19 @@ export interface ConversationRead {
   updateTime?: number // 更新时间
 }
 
+/** 会话读位置 IndexedDB 存储结构 */
 export interface ConversationReadDO extends ConversationRead {
   clientConversationId: string // `${conversationType}:${targetId}`
 }
 
+/** 消息 IndexedDB 存储结构 */
 export interface MessageDO extends Omit<Message, '_ackMerging' | '_localFile' | 'uploadProgress'> {
   messageKey: string // `${conversationType}:${id}` 或 `client:${clientMessageId}`
   conversationType: number // 会话类型，对齐 ImConversationType
   clientConversationId: string // ConversationDO.clientConversationId
 }
 
+/** 设置 IndexedDB 存储结构 */
 export interface SettingDO<T = unknown> {
   key: string
   value: T
@@ -195,12 +200,18 @@ export interface Group {
   groupRemark?: string // 群备注。从当前用户的 GroupMember 回填（当前用户对该群的自定义名）
   members?: GroupMember[] // 群成员缓存（按需懒加载）
   infoLoaded?: boolean // 群详情是否已加载，本轮会话内存标记，不持久化
+  activeCallLoaded?: boolean // 群活跃通话是否已探测，本轮会话内存标记，不持久化
+  activeCallExpired?: boolean // 群活跃通话探测是否已过期
   membersLoaded?: boolean // members 是否"完整加载"——只有整群 loadGroupMemberList / fetchGroupMemberList 命中时为 true；fetchGroupMember 单成员补齐不置位，避免 fetchGroupMemberList(force=false) 命中缓存时误判整群已加载
   membersExpired?: boolean // 群成员缓存是否已过期；重连 / 重新进入 IM 后只标记不删除，下次进入群会话再刷新
   memberCount?: number // 成员总数
 }
 
-export type GroupDO = Omit<Group, 'infoLoaded' | 'members' | 'membersExpired' | 'membersLoaded'>
+/** 群 IndexedDB 存储结构 */
+export type GroupDO = Omit<
+  Group,
+  'activeCallExpired' | 'activeCallLoaded' | 'infoLoaded' | 'members' | 'membersExpired' | 'membersLoaded'
+>
 
 // 群成员实体（前端内部结构）
 export interface GroupMember {
diff --git a/apps/web-ele/src/views/im/home/components/rtc/rtc-group-call-banner.vue b/apps/web-ele/src/views/im/home/components/rtc/rtc-group-call-banner.vue
index 106029b1e..59f7b057e 100644
--- a/apps/web-ele/src/views/im/home/components/rtc/rtc-group-call-banner.vue
+++ b/apps/web-ele/src/views/im/home/components/rtc/rtc-group-call-banner.vue
@@ -11,6 +11,7 @@ import { getActiveCall, joinCall } from '#/api/im/rtc'
 import { getCurrentUserId } from '#/views/im/utils/auth'
 
 import { useGroupCallMembers } from '../../composables/useGroupCallMembers'
+import { useGroupStore } from '../../store/groupStore'
 import { useRtcStore } from '../../store/rtcStore'
 import { UserAvatar } from '../user'
 
@@ -21,6 +22,7 @@ const props = defineProps<{
 }>()
 
 const rtcStore = useRtcStore()
+const groupStore = useGroupStore()
 
 const popoverVisible = ref(false)
 
@@ -40,24 +42,48 @@ const pillText = computed(() => {
  * 用 [groupId, room] 双源监听 + 已填充守卫，避免切群 / 首次填充触发的双次重复拉取
  */
 watch(
-  () => [props.groupId, activeCall.value?.room] as const,
+  () =>
+    [
+      props.groupId,
+      activeCall.value?.room,
+      groupStore.isGroupActiveCallExpired(props.groupId)
+    ] as const,
   async ([groupId, room], oldValues) => {
-    if (!groupId || !activeCall.value) {
+    if (!groupId) {
       return
     }
 
-    // 决策是否需要拉取：仅补齐本地已有通话；没有本地通话时等待实时事件创建
+    if (!activeCall.value) {
+      if (!groupStore.isGroupActiveCallExpired(groupId)) {
+        return
+      }
+      try {
+        const data = await getActiveCall(groupId)
+        if (data) {
+          rtcStore.setGroupCall(data, true)
+        } else {
+          rtcStore.removeGroupCall(groupId)
+        }
+      } catch (error) {
+        console.warn('[GroupCallBanner] getActiveCall 失败', { groupId }, error)
+      }
+      return
+    }
+
+    // 决策是否需要拉取：补齐本地已有通话；没有本地通话时按群缓存过期状态懒探测一次
     const groupChanged = !oldValues || oldValues[0] !== groupId
     const roomChanged = oldValues && oldValues[1] !== room
     const participantsLoaded = (activeCall.value?.joinedUserIds?.length ?? 0) > 1
+    const activeCallExpired = groupStore.isGroupActiveCallExpired(groupId)
     if (
-      rtcStore.isGroupCallParticipantsLoaded(groupId, room) ||
-      (!groupChanged && !roomChanged && participantsLoaded)
+      !activeCallExpired &&
+      (rtcStore.isGroupCallParticipantsLoaded(groupId, room) ||
+        (!groupChanged && !roomChanged && participantsLoaded))
     ) {
       return
     }
 
-    // 拉最新参与者写回 store；接口返回空 → 该群已无活跃通话
+    // 拉最新参与者写回 store；接口返回空 → 该群已无活跃通话，移除本地缓存
     try {
       const data = await getActiveCall(groupId)
       if (data) {
diff --git a/apps/web-ele/src/views/im/home/composables/useMessagePuller.ts b/apps/web-ele/src/views/im/home/composables/useMessagePuller.ts
index 14d87715a..95cf36db0 100644
--- a/apps/web-ele/src/views/im/home/composables/useMessagePuller.ts
+++ b/apps/web-ele/src/views/im/home/composables/useMessagePuller.ts
@@ -290,6 +290,7 @@ export const useMessagePuller = () => {
     // 1. 清理连接级缓存
     messageStore.clearPrivateReadMaxIdCache()
     rtcStore.clearGroupCallCache()
+    groupStore.markAllGroupActiveCallsExpired()
     groupStore.markAllGroupInfoExpired()
     groupStore.markAllGroupMembersExpired()
     // 2. 并发补偿远端状态
diff --git a/apps/web-ele/src/views/im/home/composables/useMessageSender.ts b/apps/web-ele/src/views/im/home/composables/useMessageSender.ts
index 230f273b9..456212817 100644
--- a/apps/web-ele/src/views/im/home/composables/useMessageSender.ts
+++ b/apps/web-ele/src/views/im/home/composables/useMessageSender.ts
@@ -240,12 +240,12 @@ export const useMessageSender = () => {
       }
     }
     const maxMessageId = Math.max(loadedMaxMessageId, conversation.lastMessageId || 0)
-    const readCovered = conversationStore.isReadPositionCovered(
+    const readReported = conversationStore.isReportedReadPositionCovered(
       conversation.type,
       conversation.targetId,
       maxMessageId
     )
-    if (readCovered) {
+    if (readReported) {
       conversationStore.markConversationRead(conversation.type, conversation.targetId)
       return
     }
@@ -275,6 +275,11 @@ export const useMessageSender = () => {
       } else {
         await apiReadChannelMessages(conversation.targetId, maxMessageId)
       }
+      conversationStore.markConversationReadReported(
+        conversation.type,
+        conversation.targetId,
+        maxMessageId
+      )
     } catch (error) {
       console.error(
         '[IM] 标记已读失败',
diff --git a/apps/web-ele/src/views/im/home/index.vue b/apps/web-ele/src/views/im/home/index.vue
index 581170c72..639c1e74d 100644
--- a/apps/web-ele/src/views/im/home/index.vue
+++ b/apps/web-ele/src/views/im/home/index.vue
@@ -61,6 +61,7 @@ onMounted(async () => {
     const hasFriendRows = cacheResults[2]
     const hasGroupRows = cacheResults[3]
     const hasChannelRows = cacheResults[4]
+    groupStore.markAllGroupActiveCallsExpired()
     groupStore.markAllGroupMembersExpired()
     childRouteReady.value = true
     // 1.4 我管理的群下未处理加群申请红点：首登用 unhandled-list（服务端直接过滤未处理，语义精准、启动轻）；
diff --git a/apps/web-ele/src/views/im/home/store/conversationStore.ts b/apps/web-ele/src/views/im/home/store/conversationStore.ts
index b826d3036..d96c6a777 100644
--- a/apps/web-ele/src/views/im/home/store/conversationStore.ts
+++ b/apps/web-ele/src/views/im/home/store/conversationStore.ts
@@ -27,8 +27,6 @@ import { useMessageStore } from './messageStore'
 const PERSIST_DRAFT_DEBOUNCE_MS = 500
 const pendingDraftConversations = new Set<Conversation>()
 
-type LegacyConversationDO = ConversationDO & { readMessageId?: number }
-
 /** 创建会话读位置记录 */
 function createConversationRead(
   type: number,
@@ -89,6 +87,7 @@ function toConversationDO(conversation: Conversation): ConversationDO {
     lastReceiptStatus: conversation.lastReceiptStatus,
     lastSelfSend: conversation.lastSelfSend,
     lastSenderDisplayName: conversation.lastSenderDisplayName,
+    readMessageId: conversation.readMessageId,
     deleted: conversation.deleted,
     top: conversation.top,
     silent: conversation.silent,
@@ -100,10 +99,9 @@ function toConversationDO(conversation: Conversation): ConversationDO {
 }
 
 /** IndexedDB 记录转会话 */
-function fromConversationDO(conversation: LegacyConversationDO): Conversation {
+function fromConversationDO(conversation: ConversationDO): Conversation {
   const {
     clientConversationId: _clientConversationId,
-    readMessageId: _readMessageId,
     ...rest
   } = conversation
   return rest
@@ -221,34 +219,10 @@ export const useConversationStore = defineStore('imConversationStore', {
         const item = fromConversationReadDO(record)
         nextConversationReads[getClientConversationId(item.conversationType, item.targetId)] = item
       }
-      const migratedReads: ConversationRead[] = []
-      for (const conversation of conversations as LegacyConversationDO[]) {
-        if (!conversation.readMessageId) {
-          continue
-        }
-        const key = getClientConversationId(conversation.type, conversation.targetId)
-        if (nextConversationReads[key]) {
-          continue
-        }
-        const record = {
-          conversationType: conversation.type,
-          targetId: conversation.targetId,
-          messageId: conversation.readMessageId
-        }
-        nextConversationReads[key] = record
-        migratedReads.push(record)
-      }
-      const nextConversations = (conversations as LegacyConversationDO[]).map((conversation) =>
-        fromConversationDO(conversation)
-      )
+      const nextConversations = conversations.map((conversation) => fromConversationDO(conversation))
       this.conversationReads = nextConversationReads
       await this.applyLocalConversationReads(nextConversations)
       this.conversations = nextConversations
-      if (migratedReads.length > 0) {
-        void this.saveConversationReadRecord(migratedReads).catch((error) =>
-          console.warn('[IM conversationStore] 会话读位置迁移失败', error)
-        )
-      }
       if (Array.isArray(recent)) {
         this.recentForwardConversationKeys = recent.slice(0, CONVERSATION_RECENT_FORWARD_MAX)
       }
@@ -358,6 +332,15 @@ export const useConversationStore = defineStore('imConversationStore', {
       return !!record && record.messageId >= messageId
     },
 
+    /** 判断服务端已读位置是否覆盖消息编号 */
+    isReportedReadPositionCovered(type: number, targetId: number, messageId?: number): boolean {
+      if (!messageId) {
+        return false
+      }
+      const conversation = this.getConversation(type, targetId)
+      return (conversation?.readMessageId || 0) >= messageId
+    },
+
     /** 应用读位置到会话 */
     applyReadToConversation(conversation: Conversation, messageId: number): boolean {
       if (!conversation.lastMessageId || conversation.lastMessageId > messageId) {
@@ -411,6 +394,11 @@ export const useConversationStore = defineStore('imConversationStore', {
         }
         const current = this.conversationReads[clientConversationId]
         const messageId = Math.max(record.messageId, current?.messageId || 0)
+        const conversation = this.getConversation(record.conversationType, record.targetId)
+        if (conversation && record.messageId > (conversation.readMessageId || 0)) {
+          conversation.readMessageId = record.messageId
+          changedConversations.set(clientConversationId, conversation)
+        }
         if (!current || messageId > current.messageId) {
           const next = {
             conversationType: record.conversationType,
@@ -422,7 +410,6 @@ export const useConversationStore = defineStore('imConversationStore', {
           changedReads.set(clientConversationId, next)
         }
 
-        const conversation = this.getConversation(record.conversationType, record.targetId)
         if (conversation && this.applyReadToConversation(conversation, messageId)) {
           changedConversations.set(clientConversationId, conversation)
         } else if (conversation) {
@@ -748,6 +735,19 @@ export const useConversationStore = defineStore('imConversationStore', {
       this.saveConversation(conversation)
     },
 
+    /** 标记会话已上报服务端读位置 */
+    markConversationReadReported(type: number, targetId: number, messageId?: number): void {
+      if (!messageId) {
+        return
+      }
+      const conversation = this.getConversation(type, targetId)
+      if (!conversation || messageId <= (conversation.readMessageId || 0)) {
+        return
+      }
+      conversation.readMessageId = messageId
+      this.saveConversation(conversation)
+    },
+
     // ==================== 最近转发 ====================
 
     /** 推送最近转发会话 */
diff --git a/apps/web-ele/src/views/im/home/store/groupStore.ts b/apps/web-ele/src/views/im/home/store/groupStore.ts
index e745fe70b..8db5512fd 100644
--- a/apps/web-ele/src/views/im/home/store/groupStore.ts
+++ b/apps/web-ele/src/views/im/home/store/groupStore.ts
@@ -47,6 +47,8 @@ const pendingSingleMemberKey = (userId: number, groupId: number, memberUserId: n
 /** 构建群 IndexedDB 记录 */
 function buildGroupDO(group: Group): GroupDO {
   const {
+    activeCallExpired: _activeCallExpired,
+    activeCallLoaded: _activeCallLoaded,
     infoLoaded: _infoLoaded,
     members: _members,
     membersLoaded: _membersLoaded,
@@ -229,11 +231,13 @@ export const useGroupStore = defineStore('imGroupStore', {
       this.groups = fresh.map((group) => {
         const existing = groupMap.get(group.id)
         if (!existing) {
-          return { ...group, infoLoaded: true }
+          return { ...group, activeCallExpired: true, infoLoaded: true }
         }
         return {
           ...group,
           infoLoaded: true,
+          activeCallExpired: existing.activeCallExpired,
+          activeCallLoaded: existing.activeCallLoaded,
           members: existing.members,
           memberCount: existing.memberCount ?? group.memberCount,
           membersLoaded: existing.membersLoaded,
@@ -287,6 +291,29 @@ export const useGroupStore = defineStore('imGroupStore', {
       }
     },
 
+    /** 失效全部群通话探测缓存 */
+    markAllGroupActiveCallsExpired() {
+      for (const group of this.groups) {
+        group.activeCallExpired = true
+      }
+    },
+
+    /** 标记群通话探测已加载 */
+    markGroupActiveCallLoaded(groupId: number) {
+      const group = this.getGroup(groupId)
+      if (!group) {
+        return
+      }
+      group.activeCallLoaded = true
+      group.activeCallExpired = false
+    },
+
+    /** 判断群通话是否需要重新探测 */
+    isGroupActiveCallExpired(groupId: number): boolean {
+      const group = this.getGroup(groupId)
+      return !group?.activeCallLoaded || !!group.activeCallExpired
+    },
+
     /** 失效指定群成员缓存 */
     markGroupMembersExpired(groupId: number) {
       const group = this.getGroup(groupId)
diff --git a/apps/web-ele/src/views/im/home/store/rtcStore.ts b/apps/web-ele/src/views/im/home/store/rtcStore.ts
index 2e10479d8..4922a6b75 100644
--- a/apps/web-ele/src/views/im/home/store/rtcStore.ts
+++ b/apps/web-ele/src/views/im/home/store/rtcStore.ts
@@ -260,6 +260,7 @@ export const useRtcStore = defineStore('imRtc', () => {
     if (!payload?.groupId) {
       return
     }
+    useGroupStore().markGroupActiveCallLoaded(payload.groupId)
     // 浅比较：room / mediaType / joinedUserIds / inviteeIds 都没变就跳过，避免下游 watcher 无意义重算
     const existing = groupActiveCalls.value.get(payload.groupId)
     const nextParticipantsLoaded = participantsLoaded ?? !!existing?.participantsLoaded
@@ -320,7 +321,11 @@ export const useRtcStore = defineStore('imRtc', () => {
 
   /** 群通话结束：从 groupActiveCalls 移除；胶囊条消失 */
   function removeGroupCall(groupId: number) {
+    if (!groupId) {
+      return
+    }
     clearGroupCallCache(groupId)
+    useGroupStore().markGroupActiveCallLoaded(groupId)
   }
 
   /** 获取群当前活跃通话；用于胶囊条按 groupId 查询 */
diff --git a/apps/web-ele/src/views/im/home/store/websocketStore.ts b/apps/web-ele/src/views/im/home/store/websocketStore.ts
index 3cc0abe6c..2a320db32 100644
--- a/apps/web-ele/src/views/im/home/store/websocketStore.ts
+++ b/apps/web-ele/src/views/im/home/store/websocketStore.ts
@@ -463,7 +463,7 @@ export const useImWebSocketStore = defineStore('imWebSocketStore', {
       )
       if (isActive) {
         // 窗口打开 = 已读：本端清未读 + 上报服务端读位置，避免读位置滞后
-        const readCovered = conversationStore.isReadPositionCovered(
+        const readReported = conversationStore.isReportedReadPositionCovered(
           ImConversationType.CHANNEL,
           websocketMessage.channelId,
           websocketMessage.id
@@ -471,10 +471,17 @@ export const useImWebSocketStore = defineStore('imWebSocketStore', {
         conversationStore.markConversationRead(
           ImConversationType.CHANNEL,
           websocketMessage.channelId,
-          readCovered ? undefined : websocketMessage.id
+          websocketMessage.id
         )
-        if (!readCovered) {
+        if (!readReported) {
           apiReadChannelMessages(websocketMessage.channelId, websocketMessage.id)
+            .then(() =>
+              conversationStore.markConversationReadReported(
+                ImConversationType.CHANNEL,
+                websocketMessage.channelId,
+                websocketMessage.id
+              )
+            )
             .catch((error) => {
               console.warn(
                 '[IM WS] 频道自动已读上报失败',
@@ -678,7 +685,7 @@ export const useImWebSocketStore = defineStore('imWebSocketStore', {
         if (isActive) {
           // 聊天窗口打开 = 实际看到了：本端清未读；私聊已读开启时再上报后端，让对方 UI 立刻切到"已读"
           // 已读位置直接用刚到的消息 id（这条就是当前会话最大 id）
-          const readCovered = conversationStore.isReadPositionCovered(
+          const readReported = conversationStore.isReportedReadPositionCovered(
             ImConversationType.PRIVATE,
             peerId,
             websocketMessage.id
@@ -686,10 +693,17 @@ export const useImWebSocketStore = defineStore('imWebSocketStore', {
           conversationStore.markConversationRead(
             ImConversationType.PRIVATE,
             peerId,
-            readCovered ? undefined : websocketMessage.id
+            websocketMessage.id
           )
-          if (MESSAGE_PRIVATE_READ_ENABLED && !readCovered) {
+          if (MESSAGE_PRIVATE_READ_ENABLED && !readReported) {
             apiReadPrivateMessages(peerId, websocketMessage.id)
+              .then(() =>
+                conversationStore.markConversationReadReported(
+                  ImConversationType.PRIVATE,
+                  peerId,
+                  websocketMessage.id
+                )
+              )
               .catch((error) => {
                 console.warn(
                   '[IM WS] 私聊自动已读上报失败',
@@ -831,7 +845,7 @@ export const useImWebSocketStore = defineStore('imWebSocketStore', {
           conversationStore.activeConversation?.targetId === websocketMessage.groupId
         if (isActive) {
           // 群已读上报需要带 messageId（群消息以"读到第几条"的游标为准，区别于私聊只标 receiverId）；群已读关闭时仅本地清零
-          const readCovered = conversationStore.isReadPositionCovered(
+          const readReported = conversationStore.isReportedReadPositionCovered(
             ImConversationType.GROUP,
             websocketMessage.groupId,
             websocketMessage.id
@@ -839,10 +853,17 @@ export const useImWebSocketStore = defineStore('imWebSocketStore', {
           conversationStore.markConversationRead(
             ImConversationType.GROUP,
             websocketMessage.groupId,
-            readCovered ? undefined : websocketMessage.id
+            websocketMessage.id
           )
-          if (MESSAGE_GROUP_READ_ENABLED && !readCovered) {
+          if (MESSAGE_GROUP_READ_ENABLED && !readReported) {
             apiReadGroupMessages(websocketMessage.groupId, websocketMessage.id)
+              .then(() =>
+                conversationStore.markConversationReadReported(
+                  ImConversationType.GROUP,
+                  websocketMessage.groupId,
+                  websocketMessage.id
+                )
+              )
               .catch((error) => {
                 console.warn(
                   '[IM WS] 群聊自动已读上报失败',
diff --git a/apps/web-ele/src/views/im/home/types/index.ts b/apps/web-ele/src/views/im/home/types/index.ts
index 7af29ae76..303095d81 100644
--- a/apps/web-ele/src/views/im/home/types/index.ts
+++ b/apps/web-ele/src/views/im/home/types/index.ts
@@ -110,6 +110,7 @@ export interface Conversation {
   silent?: boolean // 是否免打扰（不展示未读徽标 + 不响提示音）
   atMe?: boolean // 群聊：是否有人 @我
   atAll?: boolean // 群聊：是否有人 @全体成员
+  readMessageId?: number // 已上报到服务端的最大已读消息编号
   draft?: {
     html: string // 输入框 HTML
     plain: string // 输入框纯文本
@@ -147,6 +148,7 @@ export interface Message {
 
 // ==================== IndexedDB 本地存储结构 ====================
 
+/** 会话 IndexedDB 存储结构 */
 export interface ConversationDO extends Conversation {
   clientConversationId: string // `${type}:${targetId}`
 }
@@ -158,16 +160,19 @@ export interface ConversationRead {
   updateTime?: number // 更新时间
 }
 
+/** 会话读位置 IndexedDB 存储结构 */
 export interface ConversationReadDO extends ConversationRead {
   clientConversationId: string // `${conversationType}:${targetId}`
 }
 
+/** 消息 IndexedDB 存储结构 */
 export interface MessageDO extends Omit<Message, '_ackMerging' | '_localFile' | 'uploadProgress'> {
   messageKey: string // `${conversationType}:${id}` 或 `client:${clientMessageId}`
   conversationType: number // 会话类型，对齐 ImConversationType
   clientConversationId: string // ConversationDO.clientConversationId
 }
 
+/** 设置 IndexedDB 存储结构 */
 export interface SettingDO<T = unknown> {
   key: string
   value: T
@@ -195,12 +200,18 @@ export interface Group {
   groupRemark?: string // 群备注。从当前用户的 GroupMember 回填（当前用户对该群的自定义名）
   members?: GroupMember[] // 群成员缓存（按需懒加载）
   infoLoaded?: boolean // 群详情是否已加载，本轮会话内存标记，不持久化
+  activeCallLoaded?: boolean // 群活跃通话是否已探测，本轮会话内存标记，不持久化
+  activeCallExpired?: boolean // 群活跃通话探测是否已过期
   membersLoaded?: boolean // members 是否"完整加载"——只有整群 loadGroupMemberList / fetchGroupMemberList 命中时为 true；fetchGroupMember 单成员补齐不置位，避免 fetchGroupMemberList(force=false) 命中缓存时误判整群已加载
   membersExpired?: boolean // 群成员缓存是否已过期；重连 / 重新进入 IM 后只标记不删除，下次进入群会话再刷新
   memberCount?: number // 成员总数
 }
 
-export type GroupDO = Omit<Group, 'infoLoaded' | 'members' | 'membersExpired' | 'membersLoaded'>
+/** 群 IndexedDB 存储结构 */
+export type GroupDO = Omit<
+  Group,
+  'activeCallExpired' | 'activeCallLoaded' | 'infoLoaded' | 'members' | 'membersExpired' | 'membersLoaded'
+>
 
 // 群成员实体（前端内部结构）
 export interface GroupMember {