Kind of working booster packs

Assets/Scripts/Data/CardSystem/CardInventory.cs

@@ -50,7 +50,27 @@ namespace AppleHills.Data.CardSystem
         /// </summary>
         public List<CardData> GetAllCards()
         {
-            return new List<CardData>(collectedCards.Values);
+            return collectedCards.Values.ToList();
+        }
+        
+        /// <summary>
+        /// Clears all cards from the inventory
+        /// Primarily used for testing
+        /// </summary>
+        public void ClearAllCards()
+        {
+            collectedCards.Clear();
+            
+            // Clear lookup dictionaries
+            foreach (var zone in cardsByZone.Keys)
+            {
+                cardsByZone[zone].Clear();
+            }
+            
+            foreach (var rarity in cardsByRarity.Keys)
+            {
+                cardsByRarity[rarity].Clear();
+            }
         }
         
         /// <summary>