feat(aiot): Camera接口增加cameraCode字段,getSnapUrl改用cameraCode

- Camera interface 增加 cameraCode?: string 字段
- getSnapUrl 函数参数从 (app, stream) 改为 (cameraCode)
- 截图URL查询参数从 app/stream 改为 cameraCode
- 配合后端 camera_code 重构计划

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

apps/web-antd/src/api/aiot/device/index.ts

@@ -29,6 +29,7 @@ export namespace AiotDeviceApi {
     type?: string; // 'default' | 'ffmpeg'
     app?: string;
     stream?: string;
+    cameraCode?: string; // 摄像头唯一编码
     srcUrl?: string;
     timeout?: number;
     rtspType?: string; // '0'=TCP, '1'=UDP, '2'=Multicast
@@ -189,15 +190,11 @@ 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
  */
-export async function getSnapUrl(
-  app: string,
-  stream: string,
-): Promise<string> {
+export async function getSnapUrl(cameraCode: string): Promise<string> {
   const token = await getWvpToken();
   return (
     `${apiURL}/aiot/device/roi/snap` +
-    `?app=${encodeURIComponent(app)}` +
-    `&stream=${encodeURIComponent(stream)}` +
+    `?cameraCode=${encodeURIComponent(cameraCode)}` +
     `&access-token=${encodeURIComponent(token)}` +
     `&t=${Date.now()}`
   );