修复画布生成配方恢复边界

兼容生成配方未来字段与历史完美像素快照
补齐参数回退、旧版恢复告警和本地参考图上传
收紧生成任务幂等比较与裁扩来源归属
同步画布编辑器设计文档和回归测试

src/components/image-editor/ImageCanvasExportModel.ts

@@ -546,7 +546,7 @@ function buildVisibleGenerationInputs(layer: CanvasLayer) {
   const references =
     layer.generationInputs?.references.map((reference) => ({
       title: reference.title,
-      label: reference.label ?? '参考素材',
+      label: reference.label?.trim() || '参考素材',
       refType: reference.refType,
       refId: reference.refId,
     })) ?? [];