fix: 全站页面保活机制、登录拦截优化、UI修复与功能完善

- 移除未登录全页面拦截，改为浏览自由 + 功能使用时弹窗
- 修复PageTransition退出动画卡死导致黑屏的bug
- CanvasPage添加加载中状态避免首次访问黑屏假死
- 全站7个工具页添加页面保活机制，切页后台任务不中断
- 修复未登录时401误触发"用户已在别处登录"弹窗
- 删除MorePage模板板块、微信登录、EcommerceTemplates/SizeTemplate路由
- 剧本评分接入DashScope qwen3.7-max直连API
- 电商视频生成重构为3阶段可视管线（策划→生成图片→生成视频）
- 电商视频保活增强：异步函数直接写localStorage避免卸载丢失
- Workbench侧边栏移除mode过滤，三模式共用同一对话列表
- 首页更新轮播图/背景视频、按钮跳转修正、文案优化
- AppShell顶栏新增网站备案信息按钮
- 多个页面的terminate/cancel按钮覆盖、单镜头重试、批量保存下载

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

src/App.tsx

@@ -42,8 +42,6 @@ const CommunityReviewPage = lazy(() => import("./features/community-review/Commu
 const AvatarConsolePage = lazy(() => import("./features/digital-human/AvatarConsolePage"));
 const DigitalHumanPage = lazy(() => import("./features/digital-human/DigitalHumanPage"));
 const EcommercePage = lazy(() => import("./features/ecommerce/EcommercePage"));
-const EcommerceTemplatesPage = lazy(() => import("./features/ecommerce/EcommerceTemplatesPage"));
-import type { TemplateCase } from "./features/ecommerce/ecommerceTemplates";
 const HomePage = lazy(() => import("./features/home/HomePage"));
 const ImageWorkbenchPage = lazy(() => import("./features/image-workbench/ImageWorkbenchPage"));
 const MorePage = lazy(() => import("./features/more/MorePage"));
@@ -54,7 +52,6 @@ const ResolutionUpscalePage = lazy(() => import("./features/resolution-upscale/R
 const WatermarkRemovalPage = lazy(() => import("./features/watermark-removal/WatermarkRemovalPage"));
 const SubtitleRemovalPage = lazy(() => import("./features/subtitle-removal/SubtitleRemovalPage"));
 const ScriptTokensPage = lazy(() => import("./features/script-tokens/ScriptTokensPage"));
-const SizeTemplatePage = lazy(() => import("./features/size-template/SizeTemplatePage"));
 const TokenUsagePage = lazy(() => import("./features/script-tokens/TokenUsagePage"));
 const SettingsPage = lazy(() => import("./features/settings/SettingsPage"));
 const WorkbenchPage = lazy(() => import("./features/workbench/WorkbenchPage"));
@@ -101,7 +98,6 @@ const VIEW_KEYS = new Set<WebViewKey>([
   "assets",
   "ecommerceHub",
   "ecommerce",
-  "ecommerceTemplates",
   "scriptTokens",
   "tokenUsage",
   "settings",
@@ -113,14 +109,13 @@ const VIEW_KEYS = new Set<WebViewKey>([
   "avatarConsole",
   "characterMix",
   "more",
-  "sizeTemplate",
   "communityReview",
   "communityCaseAdd",
   "report",
   "providerHealth",
 ]);
 
-const PUBLIC_VIEW_SET = new Set<WebViewKey>(["home", "login", "community", "more", "ecommerceTemplates", "sizeTemplate"]);
+const PUBLIC_VIEW_SET = new Set<WebViewKey>(["home", "login", "community", "more"]);
 
 function normalizeViewKey(rawView: string): WebViewKey {
   const normalized =
@@ -312,12 +307,6 @@ function App() {
         hint: "AI创作与海报生成",
         icon: <ShoppingOutlined />,
       },
-      {
-        key: "sizeTemplate",
-        label: "示例模板",
-        hint: "平台比例与导出尺寸",
-        icon: <LayoutOutlined />,
-      },
       { key: "canvas", label: "画布", hint: "进入自由画布编排", icon: <BranchesOutlined /> },
       { key: "community", label: "社区", hint: "案例分享与导入", icon: <GlobalOutlined /> },
       { key: "scriptTokens", label: "剧本评分", hint: "剧本评分系统", icon: <BarChartOutlined /> },
@@ -380,11 +369,6 @@ function App() {
     };
   }, [showSessionReplacedModal]);
 
-  const handleOpenEcommerceTemplate = useCallback((template: TemplateCase) => {
-    setPendingEcommerceTemplate(template);
-    handleSetView("ecommerce");
-  }, [setPendingEcommerceTemplate, handleSetView]);
-
   const hydrateAccountData = useCallback(async (nextSession: WebUserSession | null) => {
     setProjectsLoaded(false);
     if (!nextSession) {
@@ -681,11 +665,14 @@ function App() {
     }
 
     canvasAutoOpenedRecentRef.current = true;
-    void handleOpenProject(projects[0]);
+    handleOpenProject(projects[0]).catch(() => {
+      // Reset flag on failure so auto-open can retry on next dependency change
+      canvasAutoOpenedRecentRef.current = false;
+    });
   }, [
     activeView,
-    canvasWorkflow?.nodes.length,
-    canvasWorkflow?.source,
+    canvasWorkflow.nodes.length,
+    canvasWorkflow.source,
     currentCanvasProjectId,
     handleOpenProject,
     projects,
@@ -987,25 +974,6 @@ function App() {
   }, [activeView, session]); // eslint-disable-line react-hooks/exhaustive-deps
 
   const activePage = (() => {
-    if (!session && !PUBLIC_VIEWS.has(activeView)) {
-      return (
-        <ProfilePage
-          session={session}
-          usage={usage}
-          projects={projects}
-          tasks={tasks}
-          pendingActionLabel={pendingAction?.label ?? null}
-          onLogin={handleLogin}
-          onRegister={handleRegister}
-          onAuthComplete={completeAuth}
-          onSessionChange={setSession}
-          onLogout={handleLogout}
-          onOpenWorkbench={() => handleSetView("workbench")}
-          onOpenCommunity={() => handleSetView("community")}
-          onDeleteProject={handleDeleteProject}
-        />
-      );
-    }
     switch (activeView) {
       case "login":
         return (
@@ -1049,7 +1017,7 @@ function App() {
       case "canvas":
         return (
           <CanvasPage
-            workflow={canvasWorkflow!}
+            workflow={canvasWorkflow}
             projectId={currentCanvasProjectId}
             projects={projects}
             projectsLoaded={projectsLoaded}
@@ -1081,18 +1049,6 @@ function App() {
             onInitialTemplateConsumed={() => setPendingEcommerceTemplate(null)}
           />
         );
-      case "ecommerceTemplates":
-        return (
-          <EcommerceTemplatesPage
-            projects={projects}
-            onOpenMore={() => handleSetView("more")}
-            onOpenEcommerce={() => handleSetView("ecommerce")}
-            onSelectTemplate={handleOpenEcommerceTemplate}
-            onStartCreate={handleStartTemplateCanvasCreate}
-            onOpenProject={handleOpenProject}
-            onDeleteProject={handleDeleteProject}
-          />
-        );
       case "digitalHuman":
         return (
           <DigitalHumanPage
@@ -1118,15 +1074,6 @@ function App() {
         );
       case "more":
         return <MorePage onSelectView={handleSetView} onOpenImageTool={handleOpenImageWorkbenchTool} />;
-      case "sizeTemplate":
-        return (
-          <SizeTemplatePage
-            isAuthenticated={Boolean(session)}
-            onOpenMore={() => handleSetView("more")}
-            onOpenEcommerce={() => handleSetView("ecommerce")}
-            onSelectView={handleSetView}
-          />
-        );
       case "scriptTokens":
         return <ScriptTokensPage />;
       case "tokenUsage":