修复画板私有素材预览

让生成参考图和角色动作参考图通过 objectKey 换签显示

让视频图层 poster 与框选预览复用签名读取

补充参考槽、框选预览和视频图层回归测试

沉淀框选预览换签缓存踩坑

src/components/image-editor/ImageCanvasSpecGenerationPanelView.tsx

@@ -140,6 +140,7 @@ export function ImageCanvasSpecGenerationPanelView({
                 )
               }
               imageSrc={reference?.src}
+              objectKey={reference?.objectKey}
               label={referenceSlotLabel}
               ariaLabel={referenceLabel}
               title={reference?.label ?? referenceLabel}