diff --git a/im-web/src/components/account/AccountSwitchMenu.vue b/im-web/src/components/account/AccountSwitchMenu.vue
new file mode 100644
index 0000000..ecd1ffb
--- /dev/null
+++ b/im-web/src/components/account/AccountSwitchMenu.vue
@@ -0,0 +1,845 @@
+<template>
+  <div>
+    <!-- 账号切换菜单主体 -->
+    <div 
+      class="account-switch-menu" 
+      v-if="visible" 
+      @click.stop 
+      ref="menu" 
+      v-loading="loading">
+      <!-- 当前账号 -->
+      <div class="menu-header">
+        <div class="current-label">当前账号</div>
+        <div class="current-account">
+          <img 
+            :src="currentUser.headImageThumb || currentUser.headImage || defaultAvatar" 
+            class="user-avatar"
+            @error="handleAvatarError">
+          <div class="account-info">
+            <div class="nick-name">
+              {{ currentUser.nickName }}
+              <el-tag type="success" size="mini" class="role-tag">客服</el-tag>
+            </div>
+            <div class="account-name">@{{ currentUser.userName }}</div>
+          </div>
+          <i class="el-icon-check current-icon"></i>
+        </div>
+      </div>
+
+      <!-- 其他账号列表 -->
+      <div class="other-accounts" v-if="allAccounts.length > 0">
+        <div class="divider"></div>
+        <div class="other-label">
+          可切换账号
+          <span class="account-count">{{ allAccounts.length }}</span>
+        </div>
+        <div 
+          class="account-item"
+          v-for="account in allAccounts" 
+          :key="account.id"
+          @click="handleSwitch(account)">
+          <div class="chat-left">
+            <img 
+              :src="account.headImageThumb || account.headImage || defaultAvatar" 
+              class="user-avatar"
+              @error="handleAvatarError">
+            <!-- 未读消息角标 -->
+            <div 
+              v-show="account.unreadCount > 0" 
+              class="unread-text">
+              {{ account.unreadCount > 99 ? '99+' : account.unreadCount }}
+            </div>
+          </div>
+          <div class="account-info">
+            <div class="nick-name">
+              {{ account.nickName }}
+              <el-tag type="success" size="mini" class="role-tag">客服</el-tag>
+            </div>
+            <div class="account-name">@{{ account.userName }}</div>
+            <div class="account-id">ID: {{ account.id }}</div>
+          </div>
+          <div class="account-actions">
+            <el-button 
+              type="primary" 
+              size="small" 
+              @click.stop="handleSwitch(account)">
+              切换
+            </el-button>
+            <i 
+              class="el-icon-close delete-icon" 
+              @click.stop="handleRemove(account)"
+              title="移除可切换账号">
+            </i>
+          </div>
+        </div>
+      </div>
+
+      <!-- 空状态 -->
+      <div class="empty-state" v-else-if="!loading">
+        <i class="el-icon-info"></i>
+        <p>暂无其他可切换账号</p>
+      </div>
+
+      <!-- 加载中 -->
+      <div class="loading-state" v-if="loading">
+        <i class="el-icon-loading"></i>
+        <p>加载中...</p>
+      </div>
+
+      <div class="divider"></div>
+      
+      <!-- 底部操作 -->
+      <div class="menu-footer">
+        <div class="menu-item add-account" @click="handleAddAccount">
+          <i class="el-icon-plus"></i>
+          <span>添加账号</span>
+        </div>
+      </div>
+    </div>
+
+    <!-- 添加账号登录对话框 -->
+    <el-dialog
+      title="添加账号"
+      :visible.sync="addAccountDialogVisible"
+      width="400px"
+      custom-class="add-account-dialog"
+      :close-on-click-modal="false"
+      :modal-append-to-body="true"
+      :append-to-body="true"
+      @click.stop=""
+      >
+      <el-form :model="loginForm" :rules="loginRules" ref="loginForm" label-width="80px" @submit.native.prevent>
+        <el-form-item label="账号" prop="userName">
+          <el-input 
+            v-model="loginForm.userName" 
+            placeholder="请输入账号"
+            prefix-icon="el-icon-user"
+            @keyup.enter.native="handleAddAccountLogin">
+          </el-input>
+        </el-form-item>
+        
+        <el-form-item label="密码" prop="password">
+          <el-input 
+            v-model="loginForm.password" 
+            type="password" 
+            placeholder="请输入密码"
+            prefix-icon="el-icon-lock"
+            show-password
+            @keyup.enter.native="handleAddAccountLogin">
+          </el-input>
+        </el-form-item>
+      </el-form>
+      <span slot="footer">
+        <el-button @click="addAccountDialogVisible = false">取消</el-button>
+        <el-button type="primary" @click="handleAddAccountLogin" :loading="adding">添加</el-button>
+      </span>
+    </el-dialog>
+  </div>
+</template>
+
+<script>
+const ACCOUNTS_CACHE_KEY = 'switchable_accounts_cache';  // 本地缓存key
+
+export default {
+  name: 'AccountSwitchMenu',
+  
+  props: {
+    visible: {
+      type: Boolean,
+      default: false
+    },
+    currentUser: {
+      type: Object,
+      required: true
+    },
+    position: {
+      type: Object,
+      default: () => ({ x: 0, y: 0 })
+    }
+  },
+  
+  data() {
+    return {
+      allAccounts: [],
+      loading: false,
+      adding: false,
+      addAccountDialogVisible: false,
+      loginForm: {
+        userName: '',
+        password: ''
+      },
+      loginRules: {
+        userName: [
+          { required: true, message: '请输入账号', trigger: 'blur' }
+        ],
+        password: [
+          { required: true, message: '请输入密码', trigger: 'blur' }
+        ]
+      },
+      defaultAvatar: 'https://cube.elemecdn.com/3/7c/3ea6beec64369c2642b92c6726f1epng.png',
+      unreadTimer: null,
+      wsListenerAdded: false
+    };
+  },
+  
+  watch: {
+    visible: {
+      handler(val) {
+        if (val) {
+          this.loadAccountList();
+          this.$nextTick(() => {
+            this.positionMenu();
+          });
+          document.addEventListener('click', this.handleClickOutside);
+          this.addMessageListener();
+          this.startUnreadTimer();
+        } else {
+          document.removeEventListener('click', this.handleClickOutside);
+          this.stopUnreadTimer();
+        }
+      },
+      immediate: true
+    }
+  },
+  
+  mounted() {
+    this.addMessageListener();
+    this.startUnreadTimer();
+  },
+  
+  beforeDestroy() {
+    document.removeEventListener('click', this.handleClickOutside);
+    this.stopUnreadTimer();
+    this.removeMessageListener();
+  },
+  
+  methods: {
+    // 获取本地缓存的账号列表
+    getCachedAccounts() {
+      try {
+        const cached = localStorage.getItem(ACCOUNTS_CACHE_KEY);
+        return cached ? JSON.parse(cached) : [];
+      } catch (e) {
+        console.error('读取缓存失败:', e);
+        return [];
+      }
+    },
+    
+    // 保存账号列表到本地缓存
+    saveCachedAccounts(accounts) {
+      try {
+        // 只保存必要字段，减少存储空间
+        const cacheData = accounts.map(a => ({
+          id: a.id,
+          userName: a.userName,
+          nickName: a.nickName,
+          headImage: a.headImage,
+          headImageThumb: a.headImageThumb
+        }));
+        localStorage.setItem(ACCOUNTS_CACHE_KEY, JSON.stringify(cacheData));
+      } catch (e) {
+        console.error('保存缓存失败:', e);
+      }
+    },
+    
+    // 添加单个账号到缓存
+    addAccountToCache(account) {
+      const accounts = this.getCachedAccounts();
+      // 检查是否已存在
+      const exists = accounts.some(a => a.id === account.id);
+      if (!exists) {
+        accounts.push({
+          id: account.id,
+          userName: account.userName,
+          nickName: account.nickName,
+          headImage: account.headImage,
+          headImageThumb: account.headImageThumb
+        });
+        this.saveCachedAccounts(accounts);
+      }
+    },
+    
+    // 从缓存移除账号
+    removeAccountFromCache(accountId) {
+      let accounts = this.getCachedAccounts();
+      accounts = accounts.filter(a => a.id !== accountId);
+      this.saveCachedAccounts(accounts);
+    },
+    
+    async loadAccountList() {
+      this.loading = true;
+      try {
+        // 1. 先从缓存读取
+        let accounts = this.getCachedAccounts();
+        
+        // 2. 过滤掉当前账号
+        accounts = accounts.filter(a => a.id !== this.currentUser.id);
+        
+        console.log('从缓存加载账号列表:', accounts);
+        
+        // 3. 尝试从后端获取最新列表（可选，用于同步）
+        try {
+          const res = await this.$http({
+            url: '/user/getSwitchableAccounts',
+            method: 'post'
+          });
+          
+          const data = res.data || res || {};
+          const serverAccounts = data.switchableUsers || [];
+          
+          // 合并缓存和后端数据
+          if (serverAccounts.length > 0) {
+            // 用后端数据更新缓存
+            const mergedAccounts = this.mergeAccounts(accounts, serverAccounts);
+            this.saveCachedAccounts(mergedAccounts);
+            accounts = mergedAccounts.filter(a => a.id !== this.currentUser.id);
+          }
+        } catch (error) {
+          console.log('后端接口获取失败，使用缓存数据:', error);
+        }
+        
+        // 4. 获取未读消息数
+        if (accounts.length > 0) {
+          accounts = await this.fetchUnreadCounts(accounts);
+        }
+        
+        this.allAccounts = accounts;
+        
+      } catch (error) {
+        console.error('加载账号列表失败:', error);
+        // 最终降级：只显示缓存数据
+        const cached = this.getCachedAccounts();
+        this.allAccounts = cached.filter(a => a.id !== this.currentUser.id);
+      } finally {
+        this.loading = false;
+      }
+    },
+    
+    // 合并账号列表
+    mergeAccounts(cached, server) {
+      const map = new Map();
+      // 先添加缓存数据
+      cached.forEach(a => map.set(a.id, a));
+      // 用后端数据覆盖/补充
+      server.forEach(a => map.set(a.id, a));
+      return Array.from(map.values());
+    },
+    
+    // 刷新未读消息数
+    async refreshUnreadCounts() {
+      if (this.allAccounts.length === 0) return;
+      
+      try {
+        const accounts = await this.fetchUnreadCounts(this.allAccounts);
+        this.allAccounts = accounts;
+      } catch (error) {
+        console.error('刷新未读消息数失败:', error);
+      }
+    },
+    
+    // 获取未读消息数
+    async fetchUnreadCounts(accounts) {
+      try {
+        const userIds = accounts.map(a => a.id);
+        
+        const res = await this.$http({
+          url: '/message/private/unreadCounts',
+          method: 'post',
+          data: {
+            userIds: userIds
+          }
+        });
+        
+        const unreadMap = res.data || res || {};
+        
+        return accounts.map(account => ({
+          ...account,
+          unreadCount: unreadMap[account.id] || 0
+        }));
+        
+      } catch (error) {
+        console.error('获取未读消息数失败:', error);
+        return accounts.map(account => ({
+          ...account,
+          unreadCount: 0
+        }));
+      }
+    },
+    
+    addMessageListener() {
+      if (this.wsListenerAdded) return;
+      this.$eventBus.$on('onPrivateMessage', this.handleNewMessage);
+      this.$eventBus.$on('onMessageReaded', this.handleMessageReaded);
+      this.wsListenerAdded = true;
+    },
+    
+    removeMessageListener() {
+      this.$eventBus.$off('onPrivateMessage', this.handleNewMessage);
+      this.$eventBus.$off('onMessageReaded', this.handleMessageReaded);
+      this.wsListenerAdded = false;
+    },
+    
+    handleNewMessage(msg) {
+      const account = this.allAccounts.find(a => a.id === msg.recvId);
+      if (account) {
+        account.unreadCount = (account.unreadCount || 0) + 1;
+        this.$forceUpdate();
+      }
+    },
+    
+    handleMessageReaded(data) {
+      this.refreshUnreadCounts();
+    },
+    
+    startUnreadTimer() {
+      this.stopUnreadTimer();
+      this.unreadTimer = setInterval(() => {
+        if (this.visible && this.allAccounts.length > 0) {
+          this.refreshUnreadCounts();
+        }
+      }, 30000);
+    },
+    
+    stopUnreadTimer() {
+      if (this.unreadTimer) {
+        clearInterval(this.unreadTimer);
+        this.unreadTimer = null;
+      }
+    },
+    
+    positionMenu() {
+      const menu = this.$refs.menu || this.$el;
+      if (!menu || typeof menu.getBoundingClientRect !== 'function') {
+        setTimeout(() => this.positionMenu(), 10);
+        return;
+      }
+      
+      try {
+        const rect = menu.getBoundingClientRect();
+        const windowWidth = window.innerWidth;
+        const windowHeight = window.innerHeight;
+        
+        let left = this.position.x;
+        let top = this.position.y;
+        
+        if (left + rect.width > windowWidth - 10) {
+          left = windowWidth - rect.width - 10;
+        }
+        
+        if (top + rect.height > windowHeight - 10) {
+          top = windowHeight - rect.height - 10;
+        }
+        
+        left = Math.max(10, left);
+        top = Math.max(10, top);
+        
+        menu.style.left = left + 'px';
+        menu.style.top = top + 'px';
+      } catch (e) {
+        console.error('定位菜单失败', e);
+      }
+    },
+    
+    handleClickOutside(event) {
+      if (!this.visible) return;
+      if (this.addAccountDialogVisible) return;
+      
+      const menu = this.$refs.menu || this.$el;
+      if (menu && !menu.contains(event.target)) {
+        const trigger = document.querySelector('.user-head-image');
+        if (trigger && trigger.contains(event.target)) {
+          return;
+        }
+        this.$emit('close');
+      }
+    },
+    
+    handleAddAccount() {
+      this.loginForm = {
+        userName: '',
+        password: ''
+      };
+      this.addAccountDialogVisible = true;
+      
+      this.$nextTick(() => {
+        if (this.$refs.loginForm) {
+          this.$refs.loginForm.clearValidate();
+        }
+      });
+    },
+    
+    async handleAddAccountLogin() {
+      this.$refs.loginForm.validate(async (valid) => {
+        if (!valid) return;
+        
+        this.adding = true;
+        try {
+          const res = await this.$http({
+            url: '/user/addAccounts',
+            method: 'post',
+            data: {
+              userName: this.loginForm.userName,
+              password: this.loginForm.password,
+              terminal: this.getTerminalType()
+            }
+          });
+          
+          // 获取添加的账号信息
+          const accountData = res.data || res || {};
+          
+          // 添加到缓存
+          if (accountData.user) {
+            this.addAccountToCache(accountData.user);
+          } else if (accountData.id) {
+            this.addAccountToCache(accountData);
+          }
+          
+          this.$message.success('添加账号成功');
+          this.addAccountDialogVisible = false;
+          
+          await this.loadAccountList();
+          this.$emit('update');
+          
+        } catch (error) {
+          console.error('添加失败:', error);
+          if (error.response && error.response.data) {
+            this.$message.error(error.response.data.message || '添加失败');
+          } else {
+            this.$message.error('添加失败');
+          }
+        } finally {
+          this.adding = false;
+        }
+      });
+    },
+    
+    handleSwitch(account) {
+      // 切换前，确保目标账号在缓存中
+      this.addAccountToCache(account);
+      // 确保当前账号也在缓存中
+      this.addAccountToCache(this.currentUser);
+      
+      this.$emit('switch', account);
+    },
+    
+    getTerminalType() {
+      const userAgent = navigator.userAgent;
+      if (/mobile/i.test(userAgent)) {
+        return 2;
+      }
+      if (/tablet/i.test(userAgent)) {
+        return 3;
+      }
+      return 1;
+    },
+    
+    async handleRemove(account) {
+      try {
+        await this.$confirm(`确定要移除账号【${account.nickName}】吗？`, '移除账号', {
+          confirmButtonText: '确定移除',
+          cancelButtonText: '取消',
+          type: 'warning'
+        });
+        
+        // 从缓存移除
+        this.removeAccountFromCache(account.id);
+        
+        // 尝试调用后端接口
+        try {
+          await this.$http({
+            url: '/user/removeSwitchableAccount',
+            method: 'post',
+            data: {
+              targetUserId: account.id
+            }
+          });
+        } catch (error) {
+          console.log('后端移除失败，已从本地缓存移除');
+        }
+        
+        this.$message.success('账号已移除');
+        await this.loadAccountList();
+        this.$emit('update');
+      } catch (error) {
+        // 用户取消
+      }
+    },
+    
+    handleAvatarError(e) {
+      e.target.src = this.defaultAvatar;
+    }
+  }
+};
+</script>
+
+
+<style lang="scss">
+
+.add-account-dialog {
+    border-radius: 10px !important;
+}
+.account-switch-menu {
+  position: fixed;
+  z-index: 9999;
+  background: #fff;
+  border-radius: 12px;
+  box-shadow: 0 6px 30px rgba(0, 0, 0, 0.2);
+  width: 380px;
+  max-width: 90vw;
+  padding: 12px 0;
+  user-select: none;
+
+  .menu-header {
+    padding: 8px 16px;
+    
+    .current-label {
+      font-size: 12px;
+      color: #999;
+      margin-bottom: 10px;
+    }
+    
+    .current-account {
+      display: flex;
+      align-items: center;
+      padding: 10px 12px;
+      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+      border-radius: 12px;
+      
+      .user-avatar {
+        width: 44px;
+        height: 44px;
+        border-radius: 50%;
+        object-fit: cover;
+        border: 2px solid rgba(255, 255, 255, 0.3);
+        flex-shrink: 0;
+      }
+      
+      .account-info {
+        flex: 1;
+        margin-left: 14px;
+        
+        .nick-name {
+          font-size: 16px;
+          font-weight: 500;
+          color: #fff;
+          display: flex;
+          align-items: center;
+          
+          .role-tag {
+            margin-left: 8px;
+            background: rgba(255, 255, 255, 0.2);
+            border: none;
+            color: #fff;
+          }
+        }
+        
+        .account-name {
+          font-size: 13px;
+          color: rgba(255, 255, 255, 0.85);
+          margin-top: 3px;
+        }
+      }
+      
+      .current-icon {
+        color: #fff;
+        font-size: 20px;
+        font-weight: bold;
+      }
+    }
+  }
+  
+  .divider {
+    height: 1px;
+    background: #f0f0f0;
+    margin: 12px 0;
+  }
+  
+  .other-accounts {
+    padding: 0 4px;
+    max-height: 320px;
+    overflow-y: auto;
+    
+    &::-webkit-scrollbar {
+      width: 4px;
+    }
+    
+    &::-webkit-scrollbar-thumb {
+      background: #ddd;
+      border-radius: 2px;
+    }
+    
+    .other-label {
+      font-size: 12px;
+      color: #999;
+      margin-bottom: 10px;
+      padding-left: 12px;
+      display: flex;
+      align-items: center;
+      justify-content: space-between;
+      
+      .account-count {
+        background: #f0f0f0;
+        padding: 2px 8px;
+        border-radius: 10px;
+        font-size: 11px;
+      }
+    }
+    
+    .account-item {
+      display: flex;
+      align-items: center;
+      padding: 10px 16px;
+      margin: 2px 0;
+      border-radius: 10px;
+      cursor: pointer;
+      transition: all 0.2s;
+      
+      &:hover {
+        background: #f5f7fa;
+        
+        .delete-icon {
+          opacity: 1;
+        }
+      }
+      
+      .chat-left {
+        position: relative;
+        display: flex;
+        justify-content: center;
+        align-items: center;
+        flex-shrink: 0;
+        
+        .user-avatar {
+          width: 40px;
+          height: 40px;
+          border-radius: 50%;
+          object-fit: cover;
+        }
+        
+        .unread-text {
+          position: absolute;
+          background-color: #f56c6c;
+          right: -4px;
+          top: -8px;
+          color: white;
+          border-radius: 30px;
+          padding: 1px 5px;
+          font-size: 10px;
+          text-align: center;
+          white-space: nowrap;
+          border: 1px solid #f1e5e5;
+          min-width: 16px;
+          height: 18px;
+          line-height: 16px;
+        }
+      }
+      
+      .account-info {
+        flex: 1;
+        margin-left: 14px;
+        min-width: 0;
+        
+        .nick-name {
+          font-size: 14px;
+          font-weight: 500;
+          color: #333;
+          display: flex;
+          align-items: center;
+          
+          .role-tag {
+            margin-left: 6px;
+            transform: scale(0.85);
+          }
+        }
+        
+        .account-name {
+          font-size: 12px;
+          color: #999;
+          margin-top: 2px;
+        }
+        
+        .account-id {
+          font-size: 11px;
+          color: #bbb;
+          margin-top: 2px;
+        }
+      }
+      
+      .account-actions {
+        display: flex;
+        align-items: center;
+        gap: 8px;
+        flex-shrink: 0;
+        
+        .delete-icon {
+          opacity: 0;
+          color: #999;
+          font-size: 16px;
+          padding: 6px;
+          cursor: pointer;
+          transition: all 0.2s;
+          border-radius: 50%;
+          
+          &:hover {
+            color: #f56c6c;
+            background: rgba(245, 108, 108, 0.1);
+          }
+        }
+      }
+    }
+  }
+  
+  .empty-state,
+  .loading-state {
+    text-align: center;
+    padding: 30px 20px;
+    color: #999;
+    
+    i {
+      font-size: 36px;
+      margin-bottom: 8px;
+    }
+    
+    p {
+      margin: 0;
+      font-size: 13px;
+    }
+  }
+  
+  .menu-footer {
+    padding: 4px 8px 0;
+    border-radius: 10px;
+    .menu-item {
+      display: flex;
+      align-items: center;
+      padding: 12px 16px;
+      border-radius: 10px;
+      cursor: pointer;
+      transition: background 0.2s;
+      
+      i {
+        font-size: 18px;
+        margin-right: 14px;
+        width: 20px;
+        text-align: center;
+      }
+      
+      span {
+        font-size: 14px;
+      }
+      
+      &:hover {
+        background: #f5f7fa;
+      }
+      
+      &.add-account {
+        color: #667eea;
+        
+        &:hover {
+          background: rgba(102, 126, 234, 0.08);
+        }
+      }
+    }
+  }
+}
+</style>
\ No newline at end of file
diff --git a/im-web/src/utils/accountManager.js b/im-web/src/utils/accountManager.js
new file mode 100644
index 0000000..34e6282
--- /dev/null
+++ b/im-web/src/utils/accountManager.js
@@ -0,0 +1,94 @@
+// utils/accountManager.js
+const ACCOUNT_LIST_KEY = 'IM_ACCOUNT_LIST';
+const MAX_ACCOUNT_COUNT = 5;
+
+class AccountManager {
+  // 获取所有保存的账号
+  static getAccountList() {
+    try {
+      const list = localStorage.getItem(ACCOUNT_LIST_KEY);
+      return list ? JSON.parse(list) : [];
+    } catch (e) {
+      console.error('获取账号列表失败', e);
+      return [];
+    }
+  }
+
+  // 保存账号列表
+  static saveAccountList(accounts) {
+    try {
+      localStorage.setItem(ACCOUNT_LIST_KEY, JSON.stringify(accounts));
+    } catch (e) {
+      console.error('保存账号列表失败', e);
+    }
+  }
+
+  // 保存或更新账号信息
+  static saveAccount(accountInfo) {
+    if (!accountInfo || !accountInfo.account) return;
+    
+    let accounts = this.getAccountList();
+    const existingIndex = accounts.findIndex(item => item.account === accountInfo.account);
+    
+    const newAccount = {
+      account: accountInfo.account,
+      nickName: accountInfo.nickName || accountInfo.account,
+      headImage: accountInfo.headImage || '',
+      headImageThumb: accountInfo.headImageThumb || '',
+      lastLoginTime: new Date().getTime(),
+      userId: accountInfo.userId || accountInfo.id
+    };
+    
+    if (existingIndex >= 0) {
+      accounts[existingIndex] = newAccount;
+    } else {
+      accounts.unshift(newAccount);
+    }
+    
+    if (accounts.length > MAX_ACCOUNT_COUNT) {
+      accounts = accounts.slice(0, MAX_ACCOUNT_COUNT);
+    }
+    
+    this.saveAccountList(accounts);
+  }
+
+  // 删除账号
+  static removeAccount(account) {
+    let accounts = this.getAccountList();
+    accounts = accounts.filter(item => item.account !== account);
+    this.saveAccountList(accounts);
+  }
+
+  // 获取其他账号
+  static getOtherAccounts(currentAccount) {
+    const accounts = this.getAccountList();
+    return accounts.filter(item => item.account !== currentAccount);
+  }
+
+  // 设置要切换的账号
+  static setSwitchAccount(account) {
+    sessionStorage.setItem('switch_account', account);
+  }
+
+  // 清除切换账号标记
+  static clearSwitchAccount() {
+    sessionStorage.removeItem('switch_account');
+  }
+
+  // 格式化时间
+  static formatTime(timestamp) {
+    if (!timestamp) return '';
+    const date = new Date(timestamp);
+    const now = new Date();
+    const diff = now - date;
+    
+    if (diff < 60000) return '刚刚';
+    if (diff < 3600000) return Math.floor(diff / 60000) + '分钟前';
+    if (diff < 86400000) return Math.floor(diff / 3600000) + '小时前';
+    if (diff < 604800000) return Math.floor(diff / 86400000) + '天前';
+    
+    return `${date.getMonth() + 1}月${date.getDate()}日`;
+  }
+}
+
+export default AccountManager;
\ No newline at end of file