fix: 修复视频生成 API 调用链路，确保参考图正确传递到各阶段

- 生图阶段：将用户上传的产品图作为 referenceUrls 传给生图模型
- 生视频阶段：同时传递用户原图 + 分镜图给视频模型
- 完整链路：参考图→视觉分析→分镜文本→(文本+原图)→分镜图→(文本+原图+分镜图)→视频

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/features/ecommerce/EcommerceVideoWorkspace.tsx

@@ -426,7 +426,7 @@ export default function EcommerceVideoWorkspace({
       persistScenes(currentScenes.map((s) => s.sceneId === scene.sceneId ? { ...s, status: "pending", error: undefined } : s));
       try {
         await renderSceneImage(
-          { sceneId: scene.sceneId, prompt: scene.prompt, aspectRatio: ratio },
+          { sceneId: scene.sceneId, prompt: scene.prompt, aspectRatio: ratio, productImageUrls: sourceImageUrls },
           {
             onSceneImageSubmitted: (id, taskId) => {
             persistScenes(currentScenes.map((s) => s.sceneId === id ? { ...s, imageTaskId: taskId, status: "running" } : s));
@@ -481,7 +481,7 @@ export default function EcommerceVideoWorkspace({
       persistScenes(currentScenes.map((s) => s.sceneId === scene.sceneId ? { ...s, status: "pending", error: undefined } : s));
       try {
         await renderScene(
-          { sceneId: scene.sceneId, prompt: scene.prompt, durationSeconds: scene.durationSeconds, imageUrl: scene.imageUrl, aspectRatio, resolution: quality },
+          { sceneId: scene.sceneId, prompt: scene.prompt, durationSeconds: scene.durationSeconds, imageUrl: scene.imageUrl, productImageUrls: sourceImageUrls, aspectRatio, resolution: quality },
           {
             onSceneSubmitted: (id, taskId) => {
               persistScenes(currentScenes.map((s) => s.sceneId === id ? { ...s, taskId, status: "running" } : s));
@@ -524,7 +524,7 @@ export default function EcommerceVideoWorkspace({
     setScenes((prev) => prev.map((s) => s.sceneId === scene.sceneId ? { ...s, status: "pending", error: undefined } : s));
     try {
       await renderScene(
-        { sceneId: scene.sceneId, prompt: scene.prompt, durationSeconds: scene.durationSeconds, imageUrl: scene.imageUrl!, aspectRatio, resolution: mapResolutionToQuality(resolution) },
+        { sceneId: scene.sceneId, prompt: scene.prompt, durationSeconds: scene.durationSeconds, imageUrl: scene.imageUrl!, productImageUrls: sourceImageUrls, aspectRatio, resolution: mapResolutionToQuality(resolution) },
         {
           onSceneSubmitted: (id, taskId) => setScenes((prev) => prev.map((s) => s.sceneId === id ? { ...s, taskId, status: "running" } : s)),
           onSceneProgress: (id, progress) => setScenes((prev) => prev.map((s) => s.sceneId === id ? { ...s, progress } : s)),