修复：状态栏位置调整 + HEAD请求检测截图状态

1. 状态栏位置调整
   - 列顺序改为：应用名 -> 流ID -> 状态 -> 拉流地址 -> ROI

2. 状态检测优化
   - 使用 HEAD 请求替代 GET，避免下载完整图片
   - 使用 fetch API 直接发送 HEAD 请求到 /snap/image
   - 大幅提升状态检测性能

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

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

@@ -36,10 +36,14 @@ import {
   pushAllConfig,
   saveCamera,
 } from '#/api/aiot/device';
-import { wvpRequestClient } from '#/api/aiot/request';
+import { wvpRequestClient, getWvpToken } from '#/api/aiot/request';
 
 defineOptions({ name: 'AiotDeviceCamera' });
 
+import { useAppConfig } from '@vben/hooks';
+
+const { apiURL } = useAppConfig(import.meta.env, import.meta.env.PROD);
+
 const router = useRouter();
 
 // ==================== 列表状态 ====================
@@ -54,9 +58,9 @@ const total = ref(0);
 const searchQuery = ref('');
 
 const columns = [
+  { title: '应用名', dataIndex: 'app', width: 100 },
+  { title: '流ID', dataIndex: 'stream', width: 100 },
   { title: '状态', key: 'status', width: 60, align: 'center' as const },
-  { title: '应用名', dataIndex: 'app', width: 120 },
-  { title: '流ID', dataIndex: 'stream', width: 150 },
   { title: '拉流地址', dataIndex: 'srcUrl', ellipsis: true },
   { title: 'ROI', key: 'roiCount', width: 80, align: 'center' as const },
   { title: '操作', key: 'actions', width: 240, fixed: 'right' as const },
@@ -138,21 +142,19 @@ function loadRoiCounts() {
   }
 }
 
-function loadCameraStatus() {
+async function loadCameraStatus() {
   for (const cam of cameraList.value) {
     const cameraCode = cam.cameraCode;
     if (!cameraCode) continue;
-    wvpRequestClient
-      .get('/aiot/device/roi/snap/image', {
-        params: { cameraCode },
-        responseType: 'blob',
-      })
-      .then(() => {
-        cameraStatus.value = { ...cameraStatus.value, [cameraCode]: true };
-      })
-      .catch(() => {
-        cameraStatus.value = { ...cameraStatus.value, [cameraCode]: false };
-      });
+    // 使用 fetch HEAD 请求检测截图是否可用，避免下载完整图片
+    try {
+      const token = await getWvpToken();
+      const url = `${apiURL}/aiot/device/roi/snap/image?cameraCode=${encodeURIComponent(cameraCode)}&access-token=${encodeURIComponent(token)}`;
+      const res = await fetch(url, { method: 'HEAD' });
+      cameraStatus.value = { ...cameraStatus.value, [cameraCode]: res.ok };
+    } catch {
+      cameraStatus.value = { ...cameraStatus.value, [cameraCode]: false };
+    }
   }
 }