feat(backtest): 补全第5图VolatilityChart—metrics加rolling波动率时序+risk-series端点+前端接入(凑齐聚宽5图全套)

frontend/src/api/backtest.ts

@@ -156,6 +156,8 @@ export interface RiskSeriesData {
   alpha: number[]
   beta: number[]
   drawdown: number[]
+  strategy_vol?: number[]
+  benchmark_vol?: number[]
 }
 
 export async function getRelativeMetrics(taskId: string): Promise<RelativeMetrics> {

frontend/src/views/backtest/Result.vue

@@ -13,6 +13,7 @@ import BenchmarkCurve from '@/components/backtest/BenchmarkCurve.vue'
 import AlphaChart from '@/components/backtest/AlphaChart.vue'
 import BetaChart from '@/components/backtest/BetaChart.vue'
 import DrawdownChart from '@/components/backtest/DrawdownChart.vue'
+import VolatilityChart from '@/components/backtest/VolatilityChart.vue'
 
 const route = useRoute()
 const taskId = String(route.params.id)
@@ -194,6 +195,13 @@ onMounted(async () => {
               :drawdown="filteredRiskSeries.drawdown"
             />
           </el-card>
+          <el-card>
+            <VolatilityChart
+              :dates="filteredRiskSeries.dates"
+              :strategy="filteredRiskSeries.strategy_vol ?? []"
+              :benchmark="filteredRiskSeries.benchmark_vol ?? []"
+            />
+          </el-card>
         </div>
       </el-tab-pane>