保存抠图实际模型元数据

在 generationInputs 顶层记录实际抠图供应商与模型

覆盖 BgFilter、阿里云和本地键色及三条派生资产持久化链路

保持源生图模型与图片信息展示契约不变

补充后端前端测试并同步数据契约和决策文档

src/components/image-editor/ImageCanvasMetadataModalView.test.tsx

@@ -68,17 +68,20 @@ describe('ImageCanvasMetadataModalView', () => {
   });
 
   it('keeps the generation model while hiding internal processing models', () => {
+    const generationInputsWithInternalMattingMetadata = {
+      fields: [
+        { title: '处理阶段', value: '角色抠图' },
+        { title: '处理模型', value: 'birefnet' },
+      ],
+      references: [],
+      mattingProvider: 'Aliyun Matting',
+      mattingModel: 'segment-common-image',
+    };
     const { rerender } = render(
       <ImageCanvasMetadataModalView
         layer={createLayer({
           model: 'gpt-image-2',
-          generationInputs: {
-            fields: [
-              { title: '处理阶段', value: '角色抠图' },
-              { title: '处理模型', value: 'birefnet' },
-            ],
-            references: [],
-          },
+          generationInputs: generationInputsWithInternalMattingMetadata,
         })}
         onClose={vi.fn()}
       />,
@@ -92,6 +95,8 @@ describe('ImageCanvasMetadataModalView', () => {
     expect(within(dialog).getByText('Model')).toBeTruthy();
     expect(within(dialog).getByText('gpt-image-2')).toBeTruthy();
     expect(within(dialog).queryByText('birefnet')).toBeNull();
+    expect(within(dialog).queryByText('Aliyun Matting')).toBeNull();
+    expect(within(dialog).queryByText('segment-common-image')).toBeNull();
 
     rerender(
       <ImageCanvasMetadataModalView