feat(aiot): ROI配置页面改用cameraCode参数和截图调用

- 路由参数：从query读取cameraCode替代cameraId
- 移除app/stream状态变量，统一使用cameraCode
- 截图调用：getSnapUrl(cameraCode)替代getSnapUrl(app, stream)
- loadCameraOptions：使用cameraCode作为选项value和label
- onCameraSelected：直接设置cameraCode，移除app/stream赋值
- 配置推送/导出：使用cameraCode参数
- 页面标题：显示cameraCode

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

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

@@ -46,9 +46,7 @@ const router = useRouter();
 
 // ==================== 摄像头选择 ====================
 
-const cameraId = ref('');
-const app = ref('');
-const stream = ref('');
+const cameraCode = ref('');
 
 const showCameraSelector = ref(false);
 const cameraOptions = ref<
@@ -74,10 +72,8 @@ const selectedRoi = computed(() => {
 
 onMounted(async () => {
   const q = route.query;
-  if (q.cameraId) {
-    cameraId.value = String(q.cameraId);
-    app.value = String(q.app || '');
-    stream.value = String(q.stream || '');
+  if (q.cameraCode) {
+    cameraCode.value = String(q.cameraCode);
     await buildSnapUrl();
     loadRois();
   } else {
@@ -94,8 +90,8 @@ async function loadCameraOptions() {
     const res = await getCameraList({ page: 1, count: 200 });
     const list = res.list || [];
     cameraOptions.value = list.map((cam: AiotDeviceApi.Camera) => ({
-      value: `${cam.app}/${cam.stream}`,
-      label: `${cam.app}/${cam.stream}${cam.srcUrl ? ` (${cam.srcUrl})` : ''}`,
+      value: cam.cameraCode || '',
+      label: `${cam.cameraCode || cam.stream}${cam.srcUrl ? ` (${cam.srcUrl})` : ''}`,
       camera: cam,
     }));
   } catch {
@@ -108,9 +104,7 @@ async function loadCameraOptions() {
 async function onCameraSelected(val: string) {
   const opt = cameraOptions.value.find((o) => o.value === val);
   if (opt) {
-    cameraId.value = val;
-    app.value = opt.camera.app || '';
-    stream.value = opt.camera.stream || '';
+    cameraCode.value = val;
     showCameraSelector.value = false;
     await buildSnapUrl();
     loadRois();
@@ -124,8 +118,8 @@ function goBack() {
 // ==================== 截图 ====================
 
 async function buildSnapUrl() {
-  if (app.value && stream.value) {
-    snapUrl.value = await getSnapUrl(app.value, stream.value);
+  if (cameraCode.value) {
+    snapUrl.value = await getSnapUrl(cameraCode.value);
   }
 }
 
@@ -137,7 +131,7 @@ async function refreshSnap() {
 
 async function loadRois() {
   try {
-    const data = await getRoiByCameraId(cameraId.value);
+    const data = await getRoiByCameraId(cameraCode.value);
     roiList.value = Array.isArray(data) ? data : [];
     if (selectedRoiId.value) {
       loadRoiDetail();
@@ -168,7 +162,7 @@ function startDraw(mode: string) {
 async function onRoiDrawn(data: { coordinates: string; roi_type: string }) {
   drawMode.value = null;
   const newRoi: Partial<AiotDeviceApi.Roi> = {
-    cameraId: cameraId.value,
+    cameraId: cameraCode.value,
     name: `ROI-${roiList.value.length + 1}`,
     roiType: data.roi_type,
     coordinates: data.coordinates,
@@ -251,7 +245,7 @@ function handlePush() {
     content: '确定将此摄像头的所有ROI配置推送到边缘端？',
     async onOk() {
       try {
-        await pushConfig(cameraId.value);
+        await pushConfig(cameraCode.value);
         message.success('推送成功');
       } catch (err: any) {
         message.error(err?.message || '推送失败，请检查AI服务是否启用');
@@ -286,7 +280,7 @@ function handlePush() {
       <div class="page-header">
         <div class="header-left">
           <Button size="small" @click="goBack">返回</Button>
-          <h3>{{ cameraId }} - ROI配置</h3>
+          <h3>{{ cameraCode }} - ROI配置</h3>
         </div>
         <div class="header-right">
           <Button