feat: 风险可见性控制与差旅详情页交互优化

- 新增风险可见性工具函数与风险日趋势图表组件
- 优化差旅请求详情页费用模型与视图交互
- 完善顶部导航栏样式与应用壳路由逻辑
- 补充风险可见性、风险看板与差旅详情测试覆盖

web/src/views/scripts/TravelRequestDetailView.js

@@ -1682,7 +1682,7 @@ export default {
       const target = card
         ? document.getElementById(resolveRiskCardDomId(card))
         : riskSection
-      target?.scrollIntoView({ behavior: 'smooth', block: 'center' })
+      target?.scrollIntoView({ behavior: 'smooth', block: 'nearest', inline: 'nearest' })
 
       if (highlightedRiskCardTimer) {
         window.clearTimeout(highlightedRiskCardTimer)