feat(web): 差旅申请详情进度 viewer 与审批/加载态组件增强

- 新增 requestProgressViewer，申请单在直属领导审批视角下将当前步骤展示为'等待批复'，travel-request-detail/app-shell/useRequests 接入
- TravelRequestApprovalDialog 增强审批交互，TableLoadingState 补充表格加载占位，ConfirmDialog 扩展确认对话框能力
- useAppShell/useRequests/AppShellRouteView 配套适配申请详情跳转与会话状态
- 同步更新 requestProgressSteps、travel-request-detail-leader-approval、assistant-session-draft-delete、documents-center-status-filter、app-shell-financial-assistant-entry、request-progress-viewer 等测试

web/src/utils/requestProgressViewer.js

@@ -0,0 +1,22 @@
+export function resolveProgressStepsForViewer(steps = [], options = {}) {
+  const safeSteps = Array.isArray(steps) ? steps : []
+  if (!options.isApplicationDocument || !options.isCurrentDirectManagerApprover) {
+    return safeSteps
+  }
+
+  return safeSteps.map((step) => {
+    if (!step?.current || step?.rawLabel !== '直属领导审批') {
+      return step
+    }
+    const nextLabel = '等待批复'
+    const currentLabel = String(step.label || '').trim()
+    const title = String(step.title || '').trim()
+    return {
+      ...step,
+      label: nextLabel,
+      title: currentLabel && title.includes(currentLabel)
+        ? title.replace(currentLabel, nextLabel)
+        : title
+    }
+  })
+}