diff --git a/apps/web-antd/src/api/aiot/device/index.ts b/apps/web-antd/src/api/aiot/device/index.ts
index 7066818f4..ba1c7e3fd 100644
--- a/apps/web-antd/src/api/aiot/device/index.ts
+++ b/apps/web-antd/src/api/aiot/device/index.ts
@@ -188,14 +188,19 @@ export function deleteRoi(roiId: string) {
 
 /**
  * 获取摄像头截图 URL
- * 截图接口需要认证，通过 query param 传递 access-token
+ *
+ * /snap 端点会自动处理缓存逻辑：
+ * - 有 Redis 缓存时直接 302 重定向到 COS presigned URL（快）
+ * - 无缓存时触发 Edge 截图，等待完成后重定向（首次较慢）
+ * - force=true 时强制触发 Edge 截新图
  */
-export async function getSnapUrl(cameraCode: string): Promise<string> {
+export async function getSnapUrl(cameraCode: string, force = false): Promise<string> {
   const token = await getWvpToken();
   return (
     `${apiURL}/aiot/device/roi/snap` +
     `?cameraCode=${encodeURIComponent(cameraCode)}` +
     `&access-token=${encodeURIComponent(token)}` +
+    (force ? `&force=true` : '') +
     `&t=${Date.now()}`
   );
 }
@@ -255,3 +260,19 @@ export function exportConfig(cameraId: string) {
     { params: { cameraId } },
   );
 }
+
+// ==================== 告警图片代理 ====================
+
+/**
+ * 构造告警图片代理 URL（通过 WVP 下载 COS 图片后返回字节流）
+ * @param imagePath COS 对象路径或完整 URL
+ */
+export async function getAlertImageUrl(imagePath: string): Promise<string> {
+  if (!imagePath) return '';
+  const token = await getWvpToken();
+  return (
+    `${apiURL}/aiot/device/alert/image` +
+    `?imagePath=${encodeURIComponent(imagePath)}` +
+    `&access-token=${encodeURIComponent(token)}`
+  );
+}
diff --git a/apps/web-antd/src/api/aiot/edge/index.ts b/apps/web-antd/src/api/aiot/edge/index.ts
index 39cf9843c..3abc1091d 100644
--- a/apps/web-antd/src/api/aiot/edge/index.ts
+++ b/apps/web-antd/src/api/aiot/edge/index.ts
@@ -1,6 +1,6 @@
 import type { PageParam, PageResult } from '@vben/request';
 
-import { requestClient } from '#/api/request';
+import { wvpRequestClient } from '#/api/aiot/request';
 
 export namespace AiotEdgeApi {
   /** 边缘设备 VO */
@@ -34,22 +34,23 @@ export namespace AiotEdgeApi {
 
 /** 分页查询边缘设备列表 */
 export function getDevicePage(params: PageParam) {
-  return requestClient.get<PageResult<AiotEdgeApi.Device>>(
-    '/aiot/edge/device/page',
+  return wvpRequestClient.get<PageResult<AiotEdgeApi.Device>>(
+    '/api/ai/device/page',
     { params },
   );
 }
 
 /** 获取设备详情 */
-export function getDevice(id: string) {
-  return requestClient.get<AiotEdgeApi.Device>(
-    `/aiot/edge/device/get?id=${id}`,
+export function getDevice(deviceId: string) {
+  return wvpRequestClient.get<AiotEdgeApi.Device>(
+    '/api/ai/device/get',
+    { params: { deviceId } },
   );
 }
 
 /** 获取设备统计 */
 export function getDeviceStatistics() {
-  return requestClient.get<AiotEdgeApi.DeviceStatistics>(
-    '/aiot/edge/device/statistics',
+  return wvpRequestClient.get<AiotEdgeApi.DeviceStatistics>(
+    '/api/ai/device/statistics',
   );
 }
diff --git a/apps/web-antd/src/views/aiot/device/roi/components/RoiCanvas.vue b/apps/web-antd/src/views/aiot/device/roi/components/RoiCanvas.vue
index d4080fee1..f32621952 100644
--- a/apps/web-antd/src/views/aiot/device/roi/components/RoiCanvas.vue
+++ b/apps/web-antd/src/views/aiot/device/roi/components/RoiCanvas.vue
@@ -47,17 +47,32 @@ watch(() => props.drawMode, () => {
 watch(() => props.snapUrl, () => {
   loading.value = true;
   errorMsg.value = '';
+  nextTick(() => initCanvas());
 });
 
+let resizeObserver: ResizeObserver | null = null;
+
 onMounted(() => {
   nextTick(() => {
     initCanvas();
+    if (wrapper.value && typeof ResizeObserver !== 'undefined') {
+      resizeObserver = new ResizeObserver(() => {
+        if (wrapper.value && wrapper.value.clientWidth > 0) {
+          initCanvas();
+        }
+      });
+      resizeObserver.observe(wrapper.value);
+    }
     window.addEventListener('resize', handleResize);
   });
 });
 
 onUnmounted(() => {
   window.removeEventListener('resize', handleResize);
+  if (resizeObserver) {
+    resizeObserver.disconnect();
+    resizeObserver = null;
+  }
 });
 
 function onImageLoad() {
@@ -68,6 +83,8 @@ function onImageLoad() {
 function onImageError() {
   loading.value = false;
   errorMsg.value = '截图加载失败，请确认摄像头正在拉流';
+  // 关键：截图失败也初始化 canvas，使 ROI 区域可见可操作
+  nextTick(() => initCanvas());
 }
 
 function initCanvas() {
diff --git a/apps/web-antd/src/views/aiot/device/roi/index.vue b/apps/web-antd/src/views/aiot/device/roi/index.vue
index 617dc7168..e5dd122a0 100644
--- a/apps/web-antd/src/views/aiot/device/roi/index.vue
+++ b/apps/web-antd/src/views/aiot/device/roi/index.vue
@@ -35,6 +35,7 @@ import {
   pushConfig,
   saveRoi,
 } from '#/api/aiot/device';
+import { wvpRequestClient } from '#/api/aiot/request';
 
 import RoiAlgorithmBind from './components/RoiAlgorithmBind.vue';
 import RoiCanvas from './components/RoiCanvas.vue';
@@ -64,6 +65,17 @@ const selectedRoiId = ref<null | string>(null);
 const selectedRoiBindings = ref<AiotDeviceApi.RoiAlgoBinding[]>([]);
 const snapUrl = ref('');
 
+const edgeDevices = ref<Array<{ deviceId: string }>>([]);
+
+async function loadEdgeDevices() {
+  try {
+    const list = await wvpRequestClient.get<Array<{ deviceId: string }>>('/api/ai/device/list');
+    edgeDevices.value = (list as any) || [];
+  } catch {
+    edgeDevices.value = [{ deviceId: 'edge' }];
+  }
+}
+
 const selectedRoi = computed(() => {
   if (!selectedRoiId.value) return null;
   return roiList.value.find((r) => r.roiId === selectedRoiId.value) || null;
@@ -72,6 +84,7 @@ const selectedRoi = computed(() => {
 // ==================== 初始化 ====================
 
 onMounted(async () => {
+  loadEdgeDevices();
   const q = route.query;
   if (q.cameraCode) {
     cameraCode.value = String(q.cameraCode);
@@ -134,14 +147,14 @@ function goBack() {
 
 // ==================== 截图 ====================
 
-async function buildSnapUrl() {
+async function buildSnapUrl(force = false) {
   if (cameraCode.value) {
-    snapUrl.value = await getSnapUrl(cameraCode.value);
+    snapUrl.value = await getSnapUrl(cameraCode.value, force);
   }
 }
 
 async function refreshSnap() {
-  await buildSnapUrl();
+  await buildSnapUrl(true);
 }
 
 // ==================== ROI 数据加载 ====================
@@ -187,7 +200,7 @@ async function onRoiDrawn(data: { coordinates: string; roi_type: string }) {
     priority: 0,
     enabled: 1,
     description: '',
-    deviceId: 'edge-001', // 默认关联边缘设备
+    deviceId: edgeDevices.value[0]?.deviceId || 'edge', // 默认关联边缘设备
   };
   try {
     await saveRoi(newRoi);
@@ -416,11 +429,12 @@ function handlePush() {
                   placeholder="选择边缘设备"
                   @change="updateRoiData(selectedRoi!)"
                 >
-                  <Select.Option value="edge-001">edge-001（默认）</Select.Option>
-                  <!-- 未来支持动态加载 -->
+                  <Select.Option v-for="dev in edgeDevices" :key="dev.deviceId" :value="dev.deviceId">
+                    {{ dev.deviceId }}
+                  </Select.Option>
                 </Select>
                 <div style="margin-top: 4px; font-size: 12px; color: #999">
-                  关联的边缘推理节点，默认 edge-001
+                  关联的边缘推理节点
                 </div>
               </Form.Item>
               <Form.Item label="颜色">