feat(frontend): 结果页组件—MetricCards指标卡+5图(基准/Alpha/Beta/波动率/回撤)+API封装

frontend/src/api/backtest.ts

@@ -129,3 +129,47 @@ export async function getOptimizationResults(taskId: string): Promise<OptRow[]>
   return data.results
 }
 
+// ----- Task 5+6: Backtest result page components -----
+
+export interface RelativeMetrics {
+  total_return: number
+  annual_return: number
+  alpha: number
+  beta: number
+  sharpe_ratio: number
+  sortino_ratio: number
+  information_ratio: number
+  annual_volatility: number
+  max_drawdown: number
+  benchmark_return: number
+  benchmark_volatility: number
+}
+
+export interface BenchmarkCurveData {
+  dates: string[]
+  strategy: number[]
+  benchmark: number[]
+}
+
+export interface RiskSeriesData {
+  dates: string[]
+  alpha: number[]
+  beta: number[]
+  drawdown: number[]
+}
+
+export async function getRelativeMetrics(taskId: string): Promise<RelativeMetrics> {
+  const { data } = await apiClient.get<{ relative_metrics: RelativeMetrics }>(`/task/${taskId}/result`)
+  return data.relative_metrics
+}
+
+export async function getBenchmarkCurve(taskId: string): Promise<BenchmarkCurveData> {
+  const { data } = await apiClient.get<BenchmarkCurveData>(`/task/${taskId}/benchmark-curve`)
+  return data
+}
+
+export async function getRiskSeries(taskId: string): Promise<RiskSeriesData> {
+  const { data } = await apiClient.get<RiskSeriesData>(`/task/${taskId}/risk-series`)
+  return data
+}
+