Refactor game state management to use a unified Stat system and update UI labels for production and corruption

Scripts/Core/Effects/DestroySelfEffect.cs

@@ -8,4 +8,9 @@ public partial class DestroySelfEffect : Effect
     public override void Execute(GameState gameState)
     {
     }
+    
+    public override string ToString()
+    {
+        return "";
+    }
 }