Optimize crypto ATR Stop Loss buffer multiplier to 1.5 to handle spread spacing

src/analysis/signalGenerator.js

@@ -428,7 +428,8 @@ function buildSignal(
   if (score < 3) return null;
 
   // --- Entry, SL, TP ---
-  const atrBuffer = lastATR * 0.5;
+  const atrBufferMultiplier = (symbol === 'BTCUSDT' || symbol === 'ETHUSDT') ? 1.5 : 0.5;
+  const atrBuffer = lastATR * atrBufferMultiplier;
   const spread = getSpread(symbol);
   let entry, sl, tp1, tp2;