实现 B-2b 统一报销工作台迁移（reimbursement-form-shared-component-migration）

client/tests/e2e/r6-wecom-mobile-rendering-hardening.spec.ts

@@ -563,7 +563,7 @@ async function exerciseMobileRendering(page: Page, key: string, label: string) {
   expect(meMetrics.mobileMe.hasDecorativeTopLine, `${label} mobile section top line hidden`).toBe(false);
 
   await page.goto("/mobile/reimbursements/wcm6-reimbursement");
-  await expect(page.getByTestId("mobile-reimbursement-detail")).toBeVisible();
+  await expect(page.getByTestId("reimbursement-mobile-workspace")).toBeVisible();
   await expect(page.getByTestId("mobile-bottom-nav")).toHaveCount(0);
   await expect(page.getByTestId("mobile-reimbursement-sticky-actions")).toBeVisible();
   const detailMetrics = await expectRenderingStable(page, label, `${key}-mobile-reimbursement-detail`);