收紧预览 Trace 标题断言

将 Trace 标题匹配限定在段落元素内

兼容 Markdown 多行段落并避免重复文本命中

apps/ai-game-creator-shell/tests/appSurface/project-preview/preview-shortcuts/assert-project-tools-and-preview.ts

@@ -570,7 +570,11 @@ export async function assertProjectToolsAndPreviewFlow(
   expect(screen.getByText(/下一步：设计实现组 \/ Director/)).not.toBeNull();
 
   fireEvent.click(screen.getByRole('button', { name: 'Trace' }));
-  const traceHeading = await screen.findByText(/Run：run-main-shortcut-trace/);
+  const traceHeading = await screen.findByText(
+    (content, element) =>
+      element?.tagName === 'P' &&
+      content.trimStart().startsWith('Run：run-main-shortcut-trace'),
+  );
   expect(messageBubble(traceHeading).textContent).toContain('产物快照：');
   expect(screen.getByText(/产物快照：/)).not.toBeNull();
   expect(