feat: 前端页面和组件全面完善

- 优化通用组件：导航栏、页脚、图片上传、搜索
- 完善业务组件：商品卡片、秒杀卡片
- 更新用户端页面：首页、商品、秒杀、订单、购物车、个人中心
- 新增用户收藏页面
- 完善管理后台：仪表盘、商品/订单/用户/秒杀管理
- 新增管理后台：收藏管理、评价管理、系统监控页面

flash-sale-frontend/src/pages/admin/reviews.vue

@@ -0,0 +1,123 @@
+<template>
+  <div class="page-shell">
+    <div class="page-header">
+      <div>
+        <h2 class="page-title">评价管理</h2>
+        <p class="page-subtitle">查看、隐藏和回复用户评价</p>
+      </div>
+      <el-button @click="reloadData"><el-icon><Refresh /></el-icon>刷新</el-button>
+    </div>
+
+    <div class="stats-grid">
+      <div class="mini-stat blue"><div class="mini-stat__value">{{ stats.totalReviews }}</div><div class="mini-stat__label">评价总数</div></div>
+      <div class="mini-stat green"><div class="mini-stat__value">{{ stats.todayReviews }}</div><div class="mini-stat__label">今日新增</div></div>
+      <div class="mini-stat orange"><div class="mini-stat__value">{{ stats.averageRating.toFixed(1) }}</div><div class="mini-stat__label">平均评分</div></div>
+      <div class="mini-stat purple"><div class="mini-stat__value">{{ stats.fiveStarReviews }}</div><div class="mini-stat__label">五星评价</div></div>
+    </div>
+
+    <div class="panel-card filter-card">
+      <el-input v-model="keyword" clearable placeholder="搜索用户 / 商品 / 评价内容" @keyup.enter="loadReviews" />
+      <el-button type="primary" @click="loadReviews">搜索</el-button>
+    </div>
+
+    <div class="panel-card">
+      <el-table v-loading="loading" :data="reviews" stripe>
+        <el-table-column prop="productName" label="商品" min-width="160" show-overflow-tooltip />
+        <el-table-column prop="username" label="用户" width="120" />
+        <el-table-column prop="rating" label="评分" width="120"><template #default="{ row }"><el-rate :model-value="row.rating" disabled /></template></el-table-column>
+        <el-table-column prop="content" label="评价内容" min-width="240" show-overflow-tooltip />
+        <el-table-column prop="statusText" label="状态" width="90" />
+        <el-table-column prop="adminReply" label="回复" min-width="200" show-overflow-tooltip />
+        <el-table-column prop="createdAt" label="时间" min-width="170" />
+        <el-table-column label="操作" width="200">
+          <template #default="{ row }">
+            <el-button text type="primary" @click="openReply(row)">回复</el-button>
+            <el-button text :type="row.status === 1 ? 'warning' : 'success'" @click="toggleStatus(row)">{{ row.status === 1 ? '隐藏' : '显示' }}</el-button>
+            <el-button text type="danger" @click="removeReview(row.id)">删除</el-button>
+          </template>
+        </el-table-column>
+      </el-table>
+      <div class="table-footer">
+        <el-pagination v-model:current-page="page" v-model:page-size="size" :total="total" :page-sizes="[10,20,50]" layout="total, sizes, prev, pager, next, jumper" @current-change="loadReviews" @size-change="loadReviews" />
+      </div>
+    </div>
+
+    <el-dialog v-model="replyVisible" title="评价回复" width="600px">
+      <el-input v-model="replyText" type="textarea" :rows="5" maxlength="500" show-word-limit placeholder="请输入管理员回复" />
+      <template #footer>
+        <el-button @click="replyVisible = false">取消</el-button>
+        <el-button type="primary" @click="submitReply">保存回复</el-button>
+      </template>
+    </el-dialog>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { onMounted, reactive, ref } from 'vue'
+import { ElMessage, ElMessageBox } from 'element-plus'
+import { adminApi } from '@/api/modules/admin'
+import type { AdminReviewRow, AdminReviewStats } from '@/types/admin'
+
+const loading = ref(false)
+const keyword = ref('')
+const page = ref(1)
+const size = ref(10)
+const total = ref(0)
+const reviews = ref<AdminReviewRow[]>([])
+const stats = reactive<AdminReviewStats>({ totalReviews: 0, todayReviews: 0, averageRating: 0, fiveStarReviews: 0 })
+const replyVisible = ref(false)
+const currentReviewId = ref<number | null>(null)
+const replyText = ref('')
+
+const loadStats = async () => {
+  const res = await adminApi.getReviewStats()
+  Object.assign(stats, res.data)
+}
+const loadReviews = async () => {
+  loading.value = true
+  try {
+    const res = await adminApi.getReviews({ page: page.value, size: size.value, keyword: keyword.value || undefined })
+    reviews.value = res.data.reviews
+    total.value = res.data.total
+  } finally { loading.value = false }
+}
+const openReply = (row: AdminReviewRow) => { currentReviewId.value = row.id; replyText.value = row.adminReply || ''; replyVisible.value = true }
+const submitReply = async () => {
+  if (!currentReviewId.value) return
+  await adminApi.updateReview(currentReviewId.value, { adminReply: replyText.value, status: 1 })
+  ElMessage.success('回复已保存')
+  replyVisible.value = false
+  loadReviews()
+}
+const toggleStatus = async (row: AdminReviewRow) => {
+  await adminApi.updateReview(row.id, { status: row.status === 1 ? 0 : 1 })
+  ElMessage.success('状态已更新')
+  loadStats(); loadReviews()
+}
+const removeReview = async (id: number) => {
+  await ElMessageBox.confirm('确定删除该评价吗？', '提示', { type: 'warning' })
+  await adminApi.deleteReview(id)
+  ElMessage.success('删除成功')
+  loadStats(); loadReviews()
+}
+const reloadData = async () => { await Promise.all([loadStats(), loadReviews()]) }
+onMounted(() => { reloadData() })
+</script>
+
+<style scoped lang="scss">
+.page-shell { display:flex; flex-direction:column; gap:20px; }
+.page-header { display:flex; justify-content:space-between; align-items:flex-start; gap:16px; }
+.page-title { @apply text-2xl font-bold text-slate-900; }
+.page-subtitle { @apply text-sm text-slate-500 mt-1; }
+.stats-grid { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:16px; }
+.mini-stat { @apply rounded-xl text-white p-5 shadow-sm; }
+.mini-stat.blue { background:linear-gradient(135deg,#3b82f6,#2563eb); }
+.mini-stat.green { background:linear-gradient(135deg,#10b981,#059669); }
+.mini-stat.orange { background:linear-gradient(135deg,#f59e0b,#ea580c); }
+.mini-stat.purple { background:linear-gradient(135deg,#8b5cf6,#7c3aed); }
+.mini-stat__value { @apply text-3xl font-bold; }
+.mini-stat__label { @apply text-sm opacity-90 mt-2; }
+.panel-card { @apply bg-white rounded-xl shadow-sm p-5; }
+.filter-card { display:grid; grid-template-columns:1fr 100px; gap:12px; }
+.table-footer { @apply flex justify-end mt-4; }
+</style>