功能：算法绑定页增加告警等级选择器

支持在 ROI 算法绑定中配置告警等级（紧急/重要/普通/轻微），
等级保存在 params JSON 中，各算法有默认等级。

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/web-antd/src/views/aiot/device/roi/components/RoiAlgorithmBind.vue

@@ -22,6 +22,22 @@ import {
 
 import AlgorithmParamEditor from './AlgorithmParamEditor.vue';
 
+/** 告警等级选项 */
+const ALARM_LEVEL_OPTIONS = [
+  { value: 0, label: '紧急', color: '#f5222d' },
+  { value: 1, label: '重要', color: '#fa8c16' },
+  { value: 2, label: '普通', color: '#1677ff' },
+  { value: 3, label: '轻微', color: '#8c8c8c' },
+];
+
+/** 算法默认告警等级 */
+const DEFAULT_ALARM_LEVELS: Record<string, number> = {
+  intrusion: 1,
+  leave_post: 2,
+  illegal_parking: 1,
+  vehicle_congestion: 2,
+};
+
 interface Props {
   roiId: string;
   bindings: AiotDeviceApi.RoiAlgoBinding[];
@@ -141,6 +157,35 @@ function getAlgoFrameRate(algoCode: string): string {
   };
   return frameRates[algoCode] || '5帧/秒';
 }
+
+/** 从 params JSON 中读取告警等级 */
+function getAlarmLevel(item: AiotDeviceApi.RoiAlgoBinding): number {
+  try {
+    const params = JSON.parse(item.bind.params || '{}');
+    if (params.alarm_level !== undefined) return params.alarm_level;
+  } catch { /* empty */ }
+  return DEFAULT_ALARM_LEVELS[item.bind.algoCode || ''] ?? 2;
+}
+
+/** 修改告警等级 */
+async function onAlarmLevelChange(item: AiotDeviceApi.RoiAlgoBinding, level: number) {
+  try {
+    let params: Record<string, any> = {};
+    try {
+      params = JSON.parse(item.bind.params || '{}');
+    } catch { /* empty */ }
+    params.alarm_level = level;
+    await updateAlgoParams({
+      bindId: item.bind.bindId!,
+      params: JSON.stringify(params),
+    });
+    // 更新本地数据
+    item.bind.params = JSON.stringify(params);
+    message.success('告警等级已更新');
+  } catch {
+    message.error('更新告警等级失败');
+  }
+}
 </script>
 
 <template>
@@ -194,9 +239,22 @@ function getAlgoFrameRate(algoCode: string): string {
           <Tag color="green" style="font-size: 11px">
             {{ getAlgoFrameRate(item.bind.algoCode) }}
           </Tag>
-          <span style="color: #999; font-size: 12px">
+          <Select
-            {{ item.bind.algoCode }}
+            :value="getAlarmLevel(item)"
-          </span>
+            size="small"
+            style="width: 90px"
+            @change="(val: any) => onAlarmLevelChange(item, val as number)"
+          >
+            <Select.Option
+              v-for="opt in ALARM_LEVEL_OPTIONS"
+              :key="opt.value"
+              :value="opt.value"
+            >
+              <span :style="{ color: opt.color, fontWeight: 500 }">
+                {{ opt.label }}
+              </span>
+            </Select.Option>
+          </Select>
         </div>
         <div style="display: flex; align-items: center; gap: 8px">
           <Switch