feat(portfolio): 组合回测结果增强: 基准对比曲线(对齐交易日+归一化)+回撤序列+扩展指标(波动/Sortino/Calmar/超额/Alpha/Beta), worker与API透传, 结果页净值对比+回撤图 [vps]

frontend/src/api/portfolio.ts

@@ -51,6 +51,24 @@ export interface PortfolioMetrics {
   win_rate_daily: number | null
   win_rate_trade: number | null
   trading_days: number | null
+  // 扩展指标(后端 _compute_extended_metrics,可能缺失)
+  annual_volatility?: number | null
+  sortino?: number | null
+  calmar?: number | null
+  benchmark_return?: number | null
+  excess_return?: number | null
+  alpha?: number | null
+  beta?: number | null
+}
+
+export interface BenchmarkPoint {
+  date: string
+  benchmark: number
+}
+
+export interface DrawdownPoint {
+  date: string
+  drawdown: number
 }
 
 export interface PortfolioBacktestResult {
@@ -60,6 +78,8 @@ export interface PortfolioBacktestResult {
   trades: PortfolioTrade[]
   equity_curve: EquityPoint[]
   metrics: PortfolioMetrics
+  benchmark_curve?: BenchmarkPoint[]
+  drawdown_curve?: DrawdownPoint[]
   raw_summary?: Record<string, unknown>
 }