fix tests

DieHammerTests/Bunch_O__DiceTests.swift

@@ -203,8 +203,8 @@ struct RerollTests {
         var d = Dice()
         d.one = 2; d.two = 2; d.three = 2; d.six = 4
         d.rerollBelow(cutoff: 4)
-        // The 4 sixes were not in the reroll range and should be unchanged
-        #expect(d.six == 4)
+        // Sixes were not in the reroll range; rerolled dice may also produce sixes
+        #expect(d.six >= 4)
     }
 
     @Test("applyReroll: none mode leaves hasRerolled false")
@@ -266,7 +266,7 @@ struct RerollTests {
         let total = roll.dice.one + roll.dice.two + roll.dice.three +
                     roll.dice.four + roll.dice.five + roll.dice.six
         #expect(total == 5)
-        #expect(roll.dice.six == 2) // dice above cutoff are untouched
+        #expect(roll.dice.six >= 2) // dice above cutoff are untouched; rerolls may also produce sixes
     }
 
     @Test("resetPool: clears hitHasRerolled flag")