Handle non-positive capacities in idealUnitForCapacity method

src/main/java/be/seeseepuff/pcinv/meta/CapacityInfo.java

@@ -44,6 +44,10 @@ public class CapacityInfo {
     }
 
     public static CapacityUnit idealUnitForCapacity(long capacity, CapacityUnit[] units) {
+        if (capacity <= 0) {
+            return CapacityUnit.BYTES; // Default to bytes for non-positive capacities
+        }
+
         return Arrays.stream(units)
                 .sorted(Comparator.comparing(CapacityUnit::getBytes).reversed())
                 .filter(unit -> capacity % unit.getBytes() == 0)