feat: 产品/客户/订单批量删除；接入 GeoLite2 城市库（地理分布/激活记录/审计日志显示归属地）；仪表盘趋势图美化

frontend/src/views/Products.vue

@@ -3,10 +3,16 @@
     <el-card shadow="never">
       <div class="toolbar">
         <el-input v-model="keyword" placeholder="搜索产品名称/编码" clearable style="width: 240px" @keyup.enter="loadData" @clear="loadData" />
-        <el-button type="primary" @click="dialogVisible = true">新增产品</el-button>
+        <div>
+          <el-button type="danger" plain :disabled="!selectedRows.length" @click="batchDelete">
+            批量删除{{ selectedRows.length ? `（${selectedRows.length}）` : '' }}
+          </el-button>
+          <el-button type="primary" @click="dialogVisible = true">新增产品</el-button>
+        </div>
       </div>
 
-      <el-table :data="list" v-loading="loading" stripe>
+      <el-table :data="list" v-loading="loading" stripe @selection-change="onSelectionChange">
+        <el-table-column type="selection" width="48" />
         <el-table-column prop="name" label="产品名称" min-width="140" />
         <el-table-column prop="code" label="编码" width="120" />
         <el-table-column prop="version" label="版本" width="90" />
@@ -67,7 +73,29 @@
 <script setup>
 import { ref, reactive } from 'vue'
 import { ElMessage, ElMessageBox } from 'element-plus'
-import { getProducts, createProduct, updateProduct, deleteProduct, updateProductStatus } from '@/api/product'
+
+const selectedRows = ref([])
+
+function onSelectionChange(rows) {
+  selectedRows.value = rows || []
+}
+
+// 批量删除：被 License 引用的产品由后端自动跳过 // Logan.Li
+async function batchDelete() {
+  const ids = selectedRows.value.map((r) => r.id).filter(Boolean)
+  if (!ids.length) return
+  await ElMessageBox.confirm(
+    `已选 ${ids.length} 个产品；被 License 引用的将自动跳过，未引用的连同其定价计划一并删除。确认继续？`,
+    '批量删除',
+    { type: 'warning' },
+  )
+  const res = await batchDeleteProducts(ids)
+  const data = res.data || {}
+  ElMessage.success(`删除 ${data.deleted || 0} 条，跳过 ${data.skipped || 0} 条${data.failed ? `，失败 ${data.failed}` : ''}`)
+  selectedRows.value = []
+  loadData()
+}
+import { getProducts, createProduct, updateProduct, deleteProduct, updateProductStatus, batchDeleteProducts } from '@/api/product'
 
 const list = ref([])
 const loading = ref(false)