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/views/scripts/TravelRequestDetailView.js

@@ -51,6 +51,7 @@ import {
   buildApplicationDetailFactItems,
   buildRelatedApplicationFactItems
 } from '../../utils/expenseApplicationDetail.js'
+import { resolveProgressStepsForViewer } from '../../utils/requestProgressViewer.js'
 import { isArchivedRequestView, normalizeRequestForUi } from '../../utils/requestViewModel.js'
 import {
   buildAiAdviceViewModel,
@@ -1027,11 +1028,15 @@ export default {
       }
     ])
 
-    const progressSteps = computed(() =>
-      Array.isArray(request.value.progressSteps) && request.value.progressSteps.length
+    const progressSteps = computed(() => {
+      const sourceSteps = Array.isArray(request.value.progressSteps) && request.value.progressSteps.length
         ? request.value.progressSteps
         : buildFallbackProgressSteps(request.value)
-    )
+      return resolveProgressStepsForViewer(sourceSteps, {
+        isApplicationDocument: isApplicationDocument.value,
+        isCurrentDirectManagerApprover: isCurrentDirectManagerApprover.value
+      })
+    })
 
     const currentProgressRingMotion = {
       initial: {