feat(design): integrate conversation-first creation flow

tests/unit/image-canvas-page.test.tsx

@@ -61,7 +61,7 @@ function prepareWorkspace(overrides = {}) {
 }
 
 function openMobileCreationCard() {
-  fireEvent.click(screen.getByRole('button', { name: /^我的创作/ }));
+  fireEvent.click(screen.getByRole('button', { name: /^当前想法与作品/ }));
 }
 
 describe('youth AI Design Canvas page', () => {
@@ -76,28 +76,62 @@ describe('youth AI Design Canvas page', () => {
     useImageWorkspaceStore.getState().reset();
   });
 
-  it('starts with conversation and a concise Creation Card instead of a professional field matrix', () => {
+  it('starts with a guided conversation and keeps the structured summary secondary', () => {
     prepareWorkspace();
     render(<ImageCanvas />);
 
     expect(screen.getByTestId('image-workspace-conversation')).toBeInTheDocument();
-    expect(screen.getByRole('heading', { name: '一起做作品' })).toBeInTheDocument();
+    expect(screen.getByRole('heading', { name: '和 AI 聊聊你的想法' })).toBeInTheDocument();
+    expect(screen.getByText('像和同学讲故事一样说就好。AI 会先听懂，再一次问一个最重要的问题。')).toBeInTheDocument();
     openMobileCreationCard();
     const card = screen.getByTestId('youth-creation-card');
     expect(card).toBeInTheDocument();
-    expect(within(card).getByRole('heading', { name: '我的创作' })).toBeInTheDocument();
+    expect(within(card).getByRole('heading', { name: 'AI 听懂的想法' })).toBeInTheDocument();
     expect(screen.getByText('做一张便携咖啡机的小红书主视觉')).toBeInTheDocument();
     expect(screen.queryByText('Living Form')).not.toBeInTheDocument();
     expect(screen.queryByText('目标与用途')).not.toBeInTheDocument();
     expect(screen.queryByText(/规格版本|编译器|生成策略|字段决策/)).not.toBeInTheDocument();
   });
 
+  it('invites a free description and does not turn a legacy decision prompt into a form', () => {
+    const workspace = designWorkspaceFixture({
+      form: designFormFixture({
+        decisionPrompts: [{
+          id: 'choice-1',
+          kind: 'question',
+          basedOnSpecificationRevisionId: 'specification-revision-3',
+          targetPaths: ['visual.art_direction'],
+          title: '画面想要什么感觉？',
+          body: '请从下面选一个。',
+          options: [
+            { id: 'cartoon', label: '有趣的卡通', description: null },
+            { id: 'cinema', label: '像电影一样', description: null },
+          ],
+        }],
+      }),
+      turns: [],
+    });
+    prepareWorkspace(workspace);
+    render(<ImageCanvas />);
+
+    const conversation = screen.getByTestId('image-workspace-conversation');
+    expect(within(conversation).getByRole('heading', { name: '先把脑中的画面说出来' })).toBeInTheDocument();
+    expect(within(conversation).getByText(/想画什么、发生在哪里/)).toBeInTheDocument();
+    expect(within(conversation).queryByText('画面想要什么感觉？')).not.toBeInTheDocument();
+    expect(within(conversation).queryByRole('button', { name: '有趣的卡通' })).not.toBeInTheDocument();
+
+    fireEvent.click(within(conversation).getByRole('button', { name: '我想做一张热闹的社团招新海报' }));
+    expect(within(conversation).getByRole('textbox', { name: '告诉 AI 你想创作什么' })).toHaveValue(
+      '我想做一张热闹的社团招新海报',
+    );
+  });
+
   it('sends high-impact fine adjustments through the existing typed field operations', () => {
     const { actions } = prepareWorkspace();
     render(<ImageCanvas />);
 
     openMobileCreationCard();
-    fireEvent.click(screen.getByRole('button', { name: '精细调整' }));
+    fireEvent.click(screen.getByRole('button', { name: '手动调整（可选）' }));
     fireEvent.click(screen.getByRole('button', { name: '电脑横屏' }));
 
     expect(actions.applyFieldOperations).toHaveBeenCalledWith(
@@ -160,7 +194,9 @@ describe('youth AI Design Canvas page', () => {
     fireEvent.click(screen.getByRole('button', { name: '发送消息' }));
 
     await waitFor(() => {
-      expect(toastErrorMock).toHaveBeenCalledWith('AI 没有整理好这次想法，请再试一次');
+      expect(toastErrorMock).toHaveBeenCalledWith(
+        'AI 这次没听懂。你的内容还在输入框里，可以补充一个画面细节后再发送',
+      );
     });
     expect(toastErrorMock).not.toHaveBeenCalledWith('消息没有发出去，请再试一次');
   });