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)

sanguo_api/routes.py

@@ -387,12 +387,16 @@ def risk_series(task_id: str):
     alpha = series.get("alpha", {})
     beta = series.get("beta", {})
     drawdown = series.get("drawdown", {})
+    vol_s = series.get("volatility_strategy", {})
+    vol_b = series.get("volatility_benchmark", {})
 
     return {
         "dates": alpha.get("dates", []),
         "alpha": alpha.get("values", []),
         "beta": beta.get("values", []),
-        "drawdown": drawdown.get("values", [])
+        "drawdown": drawdown.get("values", []),
+        "strategy_vol": vol_s.get("values", []),
+        "benchmark_vol": vol_b.get("values", [])
     }