fix(detail-page-structure-progress-actions): 收敛操作面板定位并补充制单诊断

client/src/index.css

@@ -666,7 +666,7 @@
   }
 
   .workflow-action-panel {
-    @apply relative z-30 lg:sticky lg:top-20;
+    @apply relative z-30;
   }
 
   .workflow-action-bar {

client/src/pages/WorkflowTaskDetailPage.tsx

@@ -444,7 +444,7 @@ export function WorkflowTaskDetailPage() {
         <BusinessDetailAside>
           <BusinessDetailActionPanel
             title="处理"
-            className="workflow-action-panel lg:top-20"
+            className="workflow-action-panel"
             secondaryActions={(
               <>
                 <Button

client/tests/e2e/pc-detail-mobile-visual-wave3.spec.ts

@@ -1159,6 +1159,8 @@ test("Wave3 PC 详情和通知中心视觉截图", async ({ page }) => {
   await expect(page.getByTestId("workflow-task-overview")).toBeVisible();
   await expect(page.getByTestId("workflow-task-overview")).toContainText("2026年5月27日 17:05");
   await expect(page.locator(".workflow-action-panel")).toHaveCSS("position", "sticky");
+  await expect(page.locator(".workflow-action-panel")).toHaveCSS("top", "96px");
+  await expect(page.locator(".workflow-action-panel")).toHaveCSS("z-index", "30");
   await page.setViewportSize({ width: 1440, height: 960 });
   await page.getByTestId("workflow-task-reimbursement-detail-link").click();
   await expect(page).toHaveURL(/\/reimbursements\/reim-wave3$/);