两端同步流式输出，刷新状态，强制退出。

pages/Chat/Chat.css

@@ -507,6 +507,10 @@
 	font-size: 48rpx;
 }
 
+.chat-btn-group .head-btn:nth-child(4) {
+	/* 刷新按钮 */
+}
+
 .log-out {
 	/* background: #ffd4d4; */
 }

pages/Chat/Chat.vue

@@ -99,10 +99,13 @@
 					<view class="head-btn" @click="goWorkSpace">
 						<view class="iconfont icon-wenjianjia"></view>
 					</view>
-					<view class="head-btn" @click="goCloudDatabase">
+				<view class="head-btn" @click="goCloudDatabase">
-						<view class="iconfont icon-cloud"></view>
+					<view class="iconfont icon-cloud"></view>
-					</view>
+				</view>
-					<view class="head-btn log-out" @click="logOut">
+				<view class="head-btn" @click="handleRefresh">
+					<uni-icons type="refreshempty" size="24" color="#52c41a"></uni-icons>
+				</view>
+				<view class="head-btn log-out" @click="logOut">
 						<view class="iconfont icon-tuichu"></view>
 					</view>
 				</view>
@@ -839,6 +842,71 @@ import { openFile as openFileNative, downloadAndOpen } from '@/utils/fileOpener.
 		})
 	}
 
+	// 刷新当前会话消息
+	const handleRefresh = async () => {
+		// 1. 重置输入框状态
+		isThinking.value = false
+		isSelfSent.value = false
+		socketStore.isThinking = false
+		textMessage.value = ''
+		uploadedFiles.value = []
+		previewFileArray.value = []
+		// 移除流式消息占位
+		if (streamingMessageId.value) {
+			allmessages.value = allmessages.value.filter(m => m._id !== streamingMessageId.value)
+			streamingMessageId.value = null
+		}
+
+		const titleMap = { 0: 'AI消息', 1: '好友消息', 2: '群聊消息' }
+		const title = titleMap[ChatType.value] || '消息'
+		uni.showLoading({ title: `刷新${title}中...`, mask: true })
+
+		try {
+			// 2. 检查当前 token 是否还有效
+			const token = getToken()
+			if (!token) {
+				uni.hideLoading()
+				uni.showToast({ title: '登录已失效，请重新登录', icon: 'none', duration: 1500 })
+				setTimeout(() => uni.reLaunch({ url: '/pages/Login/Login' }), 1500)
+				return
+			}
+			await getUserInfo(token)
+
+			// 3. 确保 AI 对话模式下 socket 连接正常（PC 离线由 watcher 实时监控）
+			if (ChatType.value === 0 && !socketStore.isConnected) {
+				await handleConnect()
+			}
+
+			// 4. 刷新消息
+			switch (ChatType.value) {
+				case 0:
+					await takeConversationMessages()
+					break
+				case 1:
+					await takeFriendMessages()
+					break
+				case 2:
+					await takeGroupMessages()
+					break
+				default:
+					await takeConversationMessages()
+					break
+			}
+			uni.hideLoading()
+			uni.showToast({ title: '已刷新', icon: 'success', duration: 1200 })
+		} catch (e) {
+			uni.hideLoading()
+			// 区分 token 失效和其他错误
+			const errMsg = typeof e === 'string' ? e : (e?.message || '')
+			if (errMsg.includes('token') || errMsg.includes('Token') || errMsg.includes('登录') || errMsg.includes('过期')) {
+				uni.showToast({ title: '登录已失效，请重新登录', icon: 'none', duration: 1500 })
+				setTimeout(() => uni.reLaunch({ url: '/pages/Login/Login' }), 1500)
+			} else {
+				uni.showToast({ title: '刷新失败', icon: 'error', duration: 1500 })
+			}
+		}
+	}
+
 	const previewFileArray = ref([])
 	const uploadPhoto = () => {
 		console.log('点击了拍照上传');
@@ -1368,7 +1436,10 @@ import { openFile as openFileNative, downloadAndOpen } from '@/utils/fileOpener.
 		if (!oldVal && newVal) {
 			console.log('AI开始回复（跨设备同步），锁定输入框');
 			isThinking.value = true
-			// 非本设备发起时，也需要添加流式气泡
+			// 跨设备场景：先加载最新消息（含 PC 发的用户消息），再追加流式气泡
+			if (!isSelfSent.value) {
+				await takeConversationMessages()
+			}
 			if (!streamingMessageId.value) {
 				streamingMessageId.value = 'streaming-' + Date.now()
 				allmessages.value = [...allmessages.value, {
@@ -1416,6 +1487,25 @@ import { openFile as openFileNative, downloadAndOpen } from '@/utils/fileOpener.
 		}
 	})
 
+	// 监听 pc_offline，PC 端下线时立即强制跳转登录页
+	watch(() => socketStore.pcOffline, (offline) => {
+		if (offline) {
+			isThinking.value = false
+			socketStore.isThinking = false
+			socketStore.pcOffline = false
+			uni.showToast({
+				title: 'PC端不在线，请先登录',
+				icon: 'none',
+				duration: 1500
+			})
+			setTimeout(() => {
+				uni.reLaunch({
+					url: '/pages/Login/Login'
+				})
+			}, 1500)
+		}
+	})
+
 	// 监听流式消息内容，实时更新 AI 回复（流式输出核心）
 	watch(() => socketStore.messageString, (newContent) => {
 		if (!streamingMessageId.value || !socketStore.isThinking) return

stores/socket.js

@@ -30,6 +30,7 @@ export const useSocketStore = defineStore('socket', () => {
 	const maxLogCount = ref(20)
 
 	const authFailReason = ref('')
+	const pcOffline = ref(false)
 
 	// ==================== 计算属性 ====================
 	const isConnected = computed(() => connectionStatus.value === 'connected')
@@ -66,6 +67,7 @@ export const useSocketStore = defineStore('socket', () => {
 			...config.value,
 			...options
 		}
+		pcOffline.value = false // 每次连接时重置 PC 离线标记
 		addLog('info',
 			`准备连接WebSocket。Token:${config.value.token || '未设置'}。ConversationId: ${config.value.conversationId || '未设置'}`
 		)
@@ -182,6 +184,7 @@ export const useSocketStore = defineStore('socket', () => {
 				break
 				
 			case 'pc_offline':
+				pcOffline.value = true
 				addLog('warn', 'PC 端已离线')
 				break
 
@@ -287,6 +290,7 @@ export const useSocketStore = defineStore('socket', () => {
 		logs,
 		config,
 		authFailReason,
+		pcOffline,
 
 		// 计算属性
 		isConnected,