修复画布图层保存体积过大

画布布局不再写入图片base64正文

加载画布时从项目资源补回图层图片地址

补充大图素材保存布局回归测试

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

@@ -1623,6 +1623,49 @@ describe('ImageCanvasEditorView', () => {
     expect(createEditorAssetMock).not.toHaveBeenCalled();
   });
 
+  it('saves canvas layout without embedding image payloads in layer snapshots', async () => {
+    loadEditorAssetLibraryMock.mockResolvedValueOnce({
+      folders: [
+        {
+          folderId: 'project',
+          label: '项目素材',
+          sortOrder: 0,
+          collapsed: false,
+          systemDefault: true,
+        },
+      ],
+      assets: [
+        {
+          assetId: 'asset-data-heavy',
+          folderId: 'project',
+          label: '大图素材',
+          imageSrc: 'data:image/png;base64,'.concat('a'.repeat(4000)),
+          width: 1024,
+          height: 768,
+          sourceType: 'uploaded',
+        },
+      ],
+    });
+    render(<ImageCanvasEditorView />);
+
+    await screen.findByRole('button', { name: '添加大图素材' });
+    fireEvent.click(screen.getByRole('button', { name: '添加大图素材' }));
+
+    await waitFor(() => {
+      expect(saveEditorProjectLayoutMock).toHaveBeenCalled();
+    });
+    const layoutCalls = saveEditorProjectLayoutMock.mock.calls;
+    const lastLayout = layoutCalls.at(-1)?.[1];
+
+    expect(lastLayout.layers).toEqual(
+      expect.arrayContaining([
+        expect.not.objectContaining({
+          src: expect.stringMatching(/^data:image/u),
+        }),
+      ]),
+    );
+  });
+
   it('adds an asset library image to the canvas with pointer dragging', async () => {
     await renderLoadedEditor();