修复图片画布素材上传鉴权

统一侧栏上传入口走上传工作流

未登录素材上传先弹账号入口，不再打开文件选择器

补充上传鉴权回归测试和编辑器拆分文档记录

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

@@ -141,6 +141,9 @@ function UploadWorkflowHarness({
       >
         上传素材
       </button>
+      <button type="button" onClick={() => workflow.requestUpload('asset')}>
+        请求素材上传
+      </button>
       <button
         type="button"
         onClick={() =>
@@ -171,6 +174,12 @@ function UploadWorkflowHarness({
       >
         选择角色规范
       </button>
+      <button
+        type="button"
+        onClick={() => workflow.requestUpload('character-spec')}
+      >
+        请求角色规范上传
+      </button>
     </div>
   );
 }
@@ -227,6 +236,40 @@ describe('useImageCanvasUploadWorkflow', () => {
     });
   });
 
+  it('opens login instead of the asset file picker when protected data is unavailable', () => {
+    const openEditorLoginModal = vi.fn();
+    render(
+      <UploadWorkflowHarness
+        canAccessProtectedData={false}
+        openEditorLoginModal={openEditorLoginModal}
+      />,
+    );
+    const uploadInput = screen.getByLabelText('上传图片文件') as HTMLInputElement;
+    const clickUploadInput = vi.spyOn(uploadInput, 'click');
+
+    fireEvent.click(screen.getByRole('button', { name: '请求素材上传' }));
+
+    expect(openEditorLoginModal).toHaveBeenCalledTimes(1);
+    expect(clickUploadInput).not.toHaveBeenCalled();
+  });
+
+  it('keeps generation reference uploads local and opens the file picker without login', () => {
+    const openEditorLoginModal = vi.fn();
+    render(
+      <UploadWorkflowHarness
+        canAccessProtectedData={false}
+        openEditorLoginModal={openEditorLoginModal}
+      />,
+    );
+    const uploadInput = screen.getByLabelText('上传图片文件') as HTMLInputElement;
+    const clickUploadInput = vi.spyOn(uploadInput, 'click');
+
+    fireEvent.click(screen.getByRole('button', { name: '请求角色规范上传' }));
+
+    expect(openEditorLoginModal).not.toHaveBeenCalled();
+    expect(clickUploadInput).toHaveBeenCalledTimes(1);
+  });
+
   it('creates an uploading asset card, adds a canvas layer, and patches the layer with the persisted asset id', async () => {
     const deferredAsset = createDeferred<{
       assetId: string;