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/travelRequestDetailExpenseModel.js

@@ -454,10 +454,33 @@ function resolveSourceStandardAdjustment(source, id, requestModel) {
   if (reimbursableAmount === null) {
     return null
   }
+  const originalAmount = parseOptionalCurrency(
+    source?.originalItemAmount
+    ?? source?.original_item_amount
+    ?? source?.originalAmount
+    ?? source?.original_amount
+  )
+  const employeeAbsorbedAmount = parseOptionalCurrency(
+    source?.employeeAbsorbedAmount
+    ?? source?.employee_absorbed_amount
+  ) || 0
+  const hasExplicitAdjustmentMarker = Boolean(
+    source?.standardAdjustmentAccepted
+    || source?.standard_adjustment_accepted
+    || source?.hasStandardAdjustment
+    || source?.has_standard_adjustment
+    || String(source?.standardAdjustmentMessage || source?.standard_adjustment_message || '').trim()
+    || employeeAbsorbedAmount > 0
+    || (originalAmount !== null && reimbursableAmount < originalAmount)
+  )
+  if (!hasExplicitAdjustmentMarker) {
+    return null
+  }
+
   return {
-    originalAmount: parseOptionalCurrency(source?.originalItemAmount ?? source?.original_item_amount ?? source?.originalAmount ?? source?.original_amount),
+    originalAmount,
     reimbursableAmount,
-    employeeAbsorbedAmount: parseOptionalCurrency(source?.employeeAbsorbedAmount ?? source?.employee_absorbed_amount) || 0,
+    employeeAbsorbedAmount,
     message: String(source?.standardAdjustmentMessage || source?.standard_adjustment_message || '').trim()
   }
 }