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/features/ecommerce/ecommerceVideoService.ts

@@ -20,6 +20,7 @@ import type {
 export interface PlanCallbacks {
   onStepStart: (step: PlanStep) => void;
   onStepDone: (step: PlanStep) => void;
+  onImagesUploaded?: (urls: string[]) => void;
   signal?: AbortSignal;
 }
 
@@ -46,7 +47,9 @@ export async function runVideoPlan(
       // skip images that fail to upload
     }
   }
+  if (!imageUrls.length) throw new Error("图片上传失败，请检查图片格式或网络后重试");
   onStepDone("upload");
+  callbacks.onImagesUploaded?.(imageUrls);
 
   onStepStart("analyze");
   const imageDesc = await analyzeProductImages(imageUrls, signal);
@@ -80,6 +83,45 @@ export async function runVideoPlan(
   return { imageUrls, summary, selling, creatives, storyboard, videoPrompts, compliance };
 }
 
+export interface RenderSceneImageInput {
+  sceneId: number;
+  prompt: string;
+  aspectRatio: string;
+}
+
+export interface RenderImageCallbacks {
+  onSceneImageSubmitted: (sceneId: number, taskId: string) => void;
+  onSceneImageProgress: (sceneId: number, progress: number) => void;
+  onSceneImageCompleted: (sceneId: number, resultUrl: string) => void;
+  onSceneImageFailed: (sceneId: number, error: string) => void;
+}
+
+export async function renderSceneImage(
+  input: RenderSceneImageInput,
+  callbacks: RenderImageCallbacks,
+  abortRef: { current: boolean },
+): Promise<void> {
+  const { taskId } = await aiGenerationClient.createImageTask({
+    model: "gpt-image-2",
+    prompt: input.prompt,
+    ratio: input.aspectRatio,
+    quality: "2K",
+  });
+
+  callbacks.onSceneImageSubmitted(input.sceneId, taskId);
+
+  const resultUrl = await waitForTask(taskId, {
+    abortRef,
+    onProgress: (e) => callbacks.onSceneImageProgress(input.sceneId, e.progress),
+  });
+
+  if (resultUrl) {
+    callbacks.onSceneImageCompleted(input.sceneId, resultUrl);
+  } else {
+    callbacks.onSceneImageFailed(input.sceneId, "图片生成未返回结果");
+  }
+}
+
 export interface RenderSceneInput {
   sceneId: number;
   prompt: string;
@@ -114,7 +156,7 @@ export async function renderScene(
     duration: input.durationSeconds,
     quality: input.resolution,
     resolution: input.resolution,
-    imageUrl: input.imageUrl,
+    frameMode: "start-end",
     referenceUrls: [input.imageUrl],
     hasReferenceVideo: false,
   });
@@ -137,12 +179,12 @@ export function buildSceneTasks(
   plan: EcommerceVideoPlanResult,
 ): EcommerceVideoSceneTask[] {
   return plan.storyboard.scenes.map((scene) => {
-    const prompt = plan.videoPrompts.find((p) => p.scene_id === scene.scene_id);
+    const matchedPrompt = plan.videoPrompts.find((p) => p.scene_id === scene.scene_id);
     return {
       sceneId: scene.scene_id,
-      prompt: prompt?.positive_prompt || scene.visual_description,
+      prompt: matchedPrompt?.positive_prompt || scene.visual_description,
       durationSeconds: Number.parseInt(scene.duration, 10) || 5,
-      status: "idle",
+      status: "idle" as const,
       progress: 0,
     };
   });