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/tests/travel-request-detail-leader-approval.test.mjs

@@ -146,6 +146,8 @@ test('approval-mode detail collects leader opinion inside confirm dialog before
   assert.match(detailTemplate, /v-model:risk-confirmed="approvalRiskConfirmed"/)
   assert.match(detailTemplate, /:risk-confirm-items="approvalRiskConfirmItems"/)
   assert.doesNotMatch(detailTemplate, /:next-stage="approvalNextStage"/)
+  assert.match(approvalDialog, /size="approval"/)
+  assert.match(approvalDialog, /actions-align="end"/)
   assert.doesNotMatch(approvalDialog, /submit-confirm-summary/)
   assert.doesNotMatch(approvalDialog, /单据编号/)
   assert.doesNotMatch(approvalDialog, /当前节点/)
@@ -184,8 +186,14 @@ test('approval-mode detail collects leader opinion inside confirm dialog before
   assert.match(approvalDialog, /update:risk-confirmed/)
   assert.match(approvalDialog, /:confirm-disabled="confirmDisabled"/)
   assert.match(approvalDialog, /props\.opinionRequired && !currentOpinion\.value\.trim\(\)/)
+  assert.match(approvalDialog, /\.approval-opinion-field \{[\s\S]*gap: 6px;[\s\S]*margin-top: 8px;/)
+  assert.match(approvalDialog, /\.approval-opinion-field textarea \{[\s\S]*min-height: 74px;/)
   assert.match(confirmDialog, /confirmDisabled:\s*\{\s*type:\s*Boolean,\s*default:\s*false\s*\}/)
   assert.match(confirmDialog, /:disabled="busy \|\| confirmDisabled"/)
+  assert.match(confirmDialog, /\.shared-confirm-card--approval \{[\s\S]*width: min\(460px, calc\(100vw - 40px\)\);/)
+  assert.match(confirmDialog, /\.shared-confirm-card--approval h4 \{[\s\S]*font-size: 20px;/)
+  assert.match(confirmDialog, /\.shared-confirm-card--approval \.shared-confirm-body \{[\s\S]*max-height: min\(270px, calc\(100dvh - 238px\)\);/)
+  assert.match(confirmDialog, /\.shared-confirm-card--approval \.shared-confirm-btn \{[\s\S]*min-width: 118px;[\s\S]*min-height: 38px;/)
 
   assert.match(detailStyles, /\.detail-card-title-with-icon \{[\s\S]*display: inline-flex;[\s\S]*align-items: center;[\s\S]*gap: 8px;/)
   assert.match(detailStyles, /\.detail-card-title-with-icon i \{[\s\S]*font-size: 18px;[\s\S]*line-height: 1;/)