Last life cycle refactor updates + add comprehensive documentation (#57)

Co-authored-by: Michal Pikulski <michal.a.pikulski@gmail.com>
Reviewed-on: #57

Assets/Scripts/UI/CardSystem/BoosterNotificationDot.cs

@@ -70,16 +70,13 @@ namespace UI.CardSystem
             }
         }
         
-        protected override void OnDestroy()
+        internal override void OnManagedDestroy()
         {
             // Unsubscribe from CardSystemManager events to prevent memory leaks
             if (CardSystemManager.Instance != null)
             {
                 CardSystemManager.Instance.OnBoosterCountChanged -= OnBoosterCountChanged;
             }
-            
-            // Call base implementation
-            base.OnDestroy();
         }
         
         /// <summary>