Refactor BacktestSpotBot signal generation to utilize base implementation for optimizations; update BacktestExecutorTests with revised metrics reflecting recent backtest results; add new performance benchmark entries for improved tracking.

src/Managing.Application/Bots/BacktestSpotBot.cs

@@ -163,13 +163,11 @@ public class BacktestSpotBot : TradingBotBase, ITradingBot
     protected override async Task UpdateSignalsCore(IReadOnlyList<Candle> candles,
         Dictionary<IndicatorType, IndicatorsResultBase> preCalculatedIndicatorValues = null)
     {
-        // For spot trading, always fetch signals regardless of open positions
-        // Check if we're in cooldown period
-        if (await IsInCooldownPeriodAsync())
-        {
-            // Still in cooldown period, skip signal generation
-            return;
-        }
+        // Call base implementation for common optimizations (flip check, cooldown check)
+        // This will return early if:
+        // - FlipPosition is disabled AND there's an open position
+        // - Bot is in cooldown period
+        await base.UpdateSignalsCore(candles, preCalculatedIndicatorValues);
 
         // For backtest, if no candles provided (called from Run()), skip signal generation
         // Signals are generated in BacktestExecutor with rolling window candles