feat: 交互式对话框生成器 + 电商取消生成与上传优化

新增:
- 交互式对话框生成器模块（路由、页面、样式、MorePage入口）
- 电商模块取消生成功能（任务追踪/取消按钮/中止逻辑）
- 视频服务图片上传支持 Blob/dataURL/远程URL 多种来源

优化:
- 电商图片上传修复本地 blob 预览图缺少原始文件的问题
- 视频规划管线错误信息改进
- 生成流程中多处增加中止检查点

src/App.tsx

@@ -48,6 +48,7 @@ const CommunityCaseAddPage = lazy(() => import("./features/community-review/Comm
 const CommunityReviewPage = lazy(() => import("./features/community-review/CommunityReviewPage"));
 const AvatarConsolePage = lazy(() => import("./features/digital-human/AvatarConsolePage"));
 const DigitalHumanPage = lazy(() => import("./features/digital-human/DigitalHumanPage"));
+const DialogGeneratorPage = lazy(() => import("./features/dialog-generator/DialogGeneratorPage"));
 const EcommercePage = lazy(() => import("./features/ecommerce/EcommercePage"));
 const HomePage = lazy(() => import("./features/home/HomePage"));
 const ImageWorkbenchPage = lazy(() => import("./features/image-workbench/ImageWorkbenchPage"));
@@ -110,6 +111,7 @@ const VIEW_KEYS = new Set<WebViewKey>([
   "resolutionUpscale",
   "watermarkRemoval",
   "subtitleRemoval",
+  "dialogGenerator",
   "digitalHuman",
   "avatarConsole",
   "characterMix",
@@ -123,7 +125,7 @@ const VIEW_KEYS = new Set<WebViewKey>([
   "not-found",
 ]);
 
-const PUBLIC_VIEW_SET = new Set<WebViewKey>(["home", "login", "community", "more", "userAgreement", "privacyPolicy", "not-found"]);
+const PUBLIC_VIEW_SET = new Set<WebViewKey>(["home", "login", "community", "more", "dialogGenerator", "userAgreement", "privacyPolicy", "not-found"]);
 
 function normalizeViewKey(rawView: string): WebViewKey {
   const normalized =
@@ -1159,6 +1161,8 @@ function App() {
             onSelectView={handleSetView}
           />
         );
+      case "dialogGenerator":
+        return <DialogGeneratorPage />;
       case "report":
         return <ReportPage />;
       case "providerHealth":