feat(alerts): 添加微信告警、WebSocket实时推送和地图功能

- 新增微信告警服务（wechat_service）和告警任务（alert_tasks）
- 新增 WebSocket 实时推送端点
- 新增监控管理模块（monitor）
- 增强统计仪表板：趋势图、区域分布、光功率历史
- 设备管理：添加坐标信息、标签系统、复合索引优化
- 前端：重构Dashboard/Charts页面，新增业务组件
- 新增5个数据库迁移（坐标、复合索引、标签、光功率历史、显示名）
- 更新部署配置和脚本
- 新增测试框架基础结构

frontend/src/views/DeviceList.vue

@@ -16,6 +16,13 @@
         <el-button v-if="can('device.import')" type="success" size="small" @click="importDialogVisible = true">
           数据导入
         </el-button>
+        <a href="/api/devices/export/csv" class="csv-export-btn" title="导出CSV">
+          <svg width="13" height="13" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+            <path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"/>
+            <polyline points="7 10 12 15 17 10"/><line x1="12" y1="15" x2="12" y2="3"/>
+          </svg>
+          导出CSV
+        </a>
       </div>
     </div>
 
@@ -49,6 +56,12 @@
           <el-option label="未知" value="unknown" />
         </el-select>
       </div>
+      <div class="filter-group">
+        <label class="filter-label">标签</label>
+        <el-select v-model="filters.tag" placeholder="全部" clearable @change="search" size="small" style="width:130px">
+          <el-option v-for="t in availableTags" :key="t" :label="t" :value="t" />
+        </el-select>
+      </div>
       <div class="filter-group">
         <label class="filter-label">搜索</label>
         <el-input
@@ -428,6 +441,7 @@
           <el-input v-model="editForm.place_type" placeholder="如：宿舍、教室、办公室…" />
         </el-form-item>
         <el-form-item label="备注"><el-input v-model="editForm.notes" type="textarea" :rows="2" /></el-form-item>
+        <el-form-item label="标签"><el-input v-model="editForm.tags" placeholder="多个标签用逗号分隔，如：重点设备,考试用" /></el-form-item>
       </el-form>
       <template #footer>
         <el-button @click="editVisible = false">取消</el-button>
@@ -632,7 +646,8 @@ const total = ref(0)
 const page = ref(1)
 const pageSize = ref(20)
 const regions = ref([])
-const filters = ref({ region: '', keyword: '', school_name: '', status: '' })
+const filters = ref({ region: '', keyword: '', school_name: '', status: '', tag: '' })
+const availableTags = ref([])
 
 const detailVisible = ref(false)
 const selectedDevice = ref({})
@@ -647,7 +662,7 @@ let cooldownTimer = null
 const clearing = ref(false)
 
 const editVisible = ref(false)
-const editForm = ref({ region: '', school_name: '', building: '', room_number: '', place_type: '', notes: '' })
+const editForm = ref({ region: '', school_name: '', building: '', room_number: '', place_type: '', notes: '', tags: '' })
 const regionOptions = ref([])
 const editSaving = ref(false)
 
@@ -1003,6 +1018,7 @@ const openEdit = () => {
     room_number: selectedDevice.value.room_number || '',
     place_type: selectedDevice.value.place_type || '',
     notes: selectedDevice.value.notes || '',
+    tags: selectedDevice.value.tags || '',
   }
   loadRegionOptions()
   detailVisible.value = false
@@ -1063,6 +1079,7 @@ const loadDevices = async () => {
     keyword: filters.value.keyword || undefined,
     school_name: filters.value.school_name || undefined,
     status: filters.value.status || undefined,
+    tag: filters.value.tag || undefined,
   })
   devices.value = data.items
   total.value = data.total
@@ -1079,12 +1096,20 @@ const handleSizeChange = (val) => {
   loadDevices()
 }
 
+const fetchTags = async () => {
+  try {
+    const { data } = await request.get('/devices/tags')
+    availableTags.value = data || []
+  } catch {}
+}
+
 onMounted(() => {
   if (route.query.school_name) {
     filters.value.keyword = route.query.school_name
   }
   loadRegions()
   loadDevices()
+  fetchTags()
 })
 </script>
 
@@ -1123,6 +1148,26 @@ onMounted(() => {
 .header-actions {
   display: flex;
   gap: 8px;
+  align-items: center;
+}
+
+.csv-export-btn {
+  display: flex;
+  align-items: center;
+  gap: 5px;
+  padding: 5px 12px;
+  background: var(--bg-elevated);
+  border: 1px solid var(--border-default);
+  border-radius: var(--radius-sm);
+  color: var(--text-secondary);
+  font-size: 12px;
+  font-family: var(--font-sans);
+  text-decoration: none;
+  transition: all 0.15s;
+}
+.csv-export-btn:hover {
+  border-color: var(--accent);
+  color: var(--accent);
 }
 
 /* 筛选栏 */