fix(chat): reconcile reply recovery with continuous agent conversations

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

@@ -47,10 +47,10 @@ test('retry stickers stay readable and preserve drafts in a 319px consultation',
 });
 
 for (const width of [319, 508]) {
-  test(`quoted replies recover fully and incomplete replies retry without losing the draft at ${width}px`, async ({ page }) => {
+  for (const chat of ['legacy', 'continuous']) test(`quoted ${chat} replies recover fully and incomplete replies retry without losing the draft at ${width}px`, async ({ page }) => {
     await page.setViewportSize({ width: 1180, height: 800 });
     const sent = () => page.evaluate(() => (window as unknown as { __teacherReplyInputs: unknown[] }).__teacherReplyInputs);
-    await page.goto(`${url}?kind=recovered&width=${width}`);
+    await page.goto(`${url}?kind=recovered&width=${width}&chat=${chat}`);
     const panel = page.getByTestId('teacher-chat-panel');
     const body = page.getByTestId('teacher-reply');
     await expect(body).toContainText('它早就不是"刚搭好架子"那种阶段了');
@@ -61,7 +61,7 @@ for (const width of [319, 508]) {
     expect(await body.evaluate(el => el.scrollWidth <= el.clientWidth)).toBe(true);
     await panel.screenshot({ path: test.info().outputPath(`recovered-${width}.png`) });
 
-    await page.goto(`${url}?kind=incomplete&width=${width}`);
+    await page.goto(`${url}?kind=incomplete&width=${width}&chat=${chat}`);
     await expect(page.getByRole('status')).toHaveText('这次回复未能完整显示');
     await expect(page.getByTestId('teacher-reply')).toHaveCount(0);
     expect(await sent()).toEqual([]);
@@ -76,7 +76,7 @@ for (const width of [319, 508]) {
     await expect(page.getByText('好，我们就从这一个问题聊起。')).toBeVisible();
     await expect(input).toHaveValue('我还在写的新想法');
     expect(await sent()).toEqual([{
-      requestId: expect.any(String), text: '现在项目是什么阶段？',
+      requestId: expect.any(String), text: '现在项目是什么阶段？', ...(chat === 'continuous' ? { projectId: 'fixture' } : {}),
       sourceConversationId: 'original-source', references: [{ messageId: 'original-message', text: '原来的项目记录', role: 'assistant' }],
     }]);
   });