Deduction before splitting for fees

bot.py

@@ -187,9 +187,10 @@ def run_cycle(config: Config) -> bool:
         return bool(closed)
 
     to_buy = opportunities[:num_to_buy]
-    # Deduct fee reserve before splitting so each order has room for Kraken's taker fee
+    # Deduct fee reserve before splitting so each order has room for Kraken's taker fee.
+    # Floor to the nearest cent so floating point never pushes us over the available balance.
     fee_multiplier = 1 - (config.taker_fee_pct / 100)
-    alloc_per_asset = (balance * fee_multiplier) / num_to_buy
+    alloc_per_asset = math.floor((balance * fee_multiplier / num_to_buy) * 100) / 100
     log.info(
         "Buying %d asset(s) @ $%.2f each (total $%.2f, %.1f%% fee reserve applied)",
         num_to_buy, alloc_per_asset, alloc_per_asset * num_to_buy, config.taker_fee_pct,