refactor: remove backup files

frontend/src/components/Navbar.vue.backup

@@ -1,97 +0,0 @@
-<template>
-  <el-menu
-    :default-active="activeMenu"
-    mode="horizontal"
-    :ellipsis="false"
-    @select="handleSelect"
-  >
-    <div class="flex-grow">
-      <el-menu-item index="/">
-        <el-icon><HomeFilled /></el-icon>
-        <span class="logo-text">接龙自动打卡系统</span>
-      </el-menu-item>
-
-      <el-menu-item index="/dashboard">
-        <el-icon><User /></el-icon>
-        <span>我的仪表盘</span>
-      </el-menu-item>
-
-      <el-menu-item index="/records">
-        <el-icon><List /></el-icon>
-        <span>打卡记录</span>
-      </el-menu-item>
-
-      <!-- 管理员菜单 -->
-      <el-sub-menu v-if="authStore.isAdmin" index="admin">
-        <template #title>
-          <el-icon><Setting /></el-icon>
-          <span>管理后台</span>
-        </template>
-        <el-menu-item index="/admin/users">用户管理</el-menu-item>
-        <el-menu-item index="/admin/records">所有打卡记录</el-menu-item>
-        <el-menu-item index="/admin/stats">统计信息</el-menu-item>
-        <el-menu-item index="/admin/logs">系统日志</el-menu-item>
-      </el-sub-menu>
-    </div>
-
-    <div class="flex-grow" />
-
-    <el-sub-menu index="user">
-      <template #title>
-        <el-icon><Avatar /></el-icon>
-        <span>{{ authStore.userSignature || '用户' }}</span>
-      </template>
-      <el-menu-item @click="handleLogout">
-        <el-icon><SwitchButton /></el-icon>
-        <span>退出登录</span>
-      </el-menu-item>
-    </el-sub-menu>
-  </el-menu>
-</template>
-
-<script setup>
-import { computed } from 'vue'
-import { useRouter, useRoute } from 'vue-router'
-import { useAuthStore } from '@/stores/auth'
-import { ElMessageBox } from 'element-plus'
-
-const router = useRouter()
-const route = useRoute()
-const authStore = useAuthStore()
-
-const activeMenu = computed(() => route.path)
-
-const handleSelect = (index) => {
-  if (index !== route.path) {
-    router.push(index)
-  }
-}
-
-const handleLogout = () => {
-  ElMessageBox.confirm('确定要退出登录吗？', '提示', {
-    confirmButtonText: '确定',
-    cancelButtonText: '取消',
-    type: 'warning',
-  })
-    .then(() => {
-      authStore.logout()
-      router.push('/login')
-    })
-    .catch(() => {
-      // 取消操作
-    })
-}
-</script>
-
-<style scoped>
-.flex-grow {
-  flex-grow: 1;
-  display: flex;
-}
-
-.logo-text {
-  font-weight: bold;
-  font-size: 18px;
-  margin-left: 8px;
-}
-</style>