style(teacher): make the retry action a playful sticker

tests/e2e/teacher-reply-layout.spec.ts

@@ -21,6 +21,31 @@ test.beforeAll(async () => {
   await server.listen(); url = server.resolvedUrls!.local[0];
 });
 test.afterAll(async () => { await server?.close(); });
+test('retry stickers stay readable and preserve drafts in a 319px consultation', async ({ page }) => {
+  await page.setViewportSize({ width: 1180, height: 800 });
+  await page.addInitScript(() => localStorage.clear());
+  for (const status of ['failed', 'cancelled']) {
+    await page.goto(`${url}?kind=retry&status=${status}&width=319`);
+    const panel = page.getByTestId('teacher-chat-panel');
+    const retry = page.getByRole('button', { name: '继续看看👀', exact: true });
+    await expect(retry).toBeEnabled();
+    await expect(retry).toHaveText('继续看看👀');
+    expect(await retry.evaluate(el => el.scrollWidth <= el.clientWidth)).toBe(true);
+    const [panelBounds, retryBounds] = await Promise.all([panel.boundingBox(), retry.boundingBox()]);
+    expect(retryBounds!.x).toBeGreaterThanOrEqual(panelBounds!.x);
+    expect(retryBounds!.x + retryBounds!.width).toBeLessThanOrEqual(panelBounds!.x + panelBounds!.width);
+    await panel.screenshot({ path: test.info().outputPath(`retry-${status}-319.png`) });
+    const input = page.getByRole('textbox', { name: '向智能体提问' });
+    await input.fill('我还有一点自己的想法');
+    await retry.click();
+    await expect(page.getByText('我们可以先从一个小地方开始。')).toBeVisible();
+    await expect(input).toHaveValue('我还有一点自己的想法');
+    expect(await page.evaluate(() => (window as unknown as { __teacherReplyInputs: unknown[] }).__teacherReplyInputs)).toEqual([
+      { requestId: expect.any(String), text: '给我一点提示', intent: 'suggestions', references: [], sourceConversationId: 'source' },
+    ]);
+  }
+});
+
 for (const width of [319, 508]) {
   test(`empty-composer hint stays lightweight and keeps the send position stable at ${width}px`, async ({ page }) => {
     await page.setViewportSize({ width: 1180, height: 800 });