Make a generic booster pack giver

Assets/Scripts/Core/GameManager.cs

@@ -307,6 +307,92 @@ namespace Core
             }
         }
 
+        /// <summary>
+        /// Displays the booster pack reward UI and grants the specified number of booster packs.
+        /// This method is awaitable and handles input mode switching automatically.
+        /// Supports awarding 1 to N booster packs with animated visuals.
+        /// </summary>
+        /// <param name="count">Number of booster packs to grant</param>
+        /// <returns>Task that completes when the UI sequence is finished</returns>
+        public async System.Threading.Tasks.Task GiveBoosterPacksAsync(int count)
+        {
+            Logging.Debug($"[GameManager] GiveBoosterPacksAsync called with count: {count}");
+            
+            // Get prefab from settings
+            var settings = GetSettingsObject<ICardSystemSettings>();
+            if (settings?.BoosterPackRewardPrefab == null)
+            {
+                Logging.Warning("[GameManager] BoosterPackRewardPrefab not set in CardSystemSettings. Cannot show reward UI.");
+                return;
+            }
+            
+            // Find main canvas
+            GameObject mainCanvasObj = GameObject.FindGameObjectWithTag("MainCanvas");
+            if (mainCanvasObj == null)
+            {
+                Logging.Warning("[GameManager] MainCanvas not found in scene. Cannot show reward UI.");
+                return;
+            }
+            
+            // Switch to UI input mode
+            InputManager.Instance?.SetInputMode(InputMode.UI);
+            Logging.Debug("[GameManager] Switched to UI input mode");
+            
+            // Instantiate UI prefab
+            GameObject uiInstance = Instantiate(settings.BoosterPackRewardPrefab);
+            var component = uiInstance.GetComponent<UI.CardSystem.MinigameBoosterGiver>();
+            
+            if (component == null)
+            {
+                Logging.Warning("[GameManager] BoosterPackRewardPrefab does not have MinigameBoosterGiver component!");
+                Destroy(uiInstance);
+                InputManager.Instance?.SetInputMode(InputMode.GameAndUI);
+                return;
+            }
+            
+            // Parent to main canvas and set stretch-fill anchoring
+            RectTransform rectTransform = uiInstance.GetComponent<RectTransform>();
+            if (rectTransform != null)
+            {
+                rectTransform.SetParent(mainCanvasObj.transform, false);
+                
+                // Set anchors to stretch-fill (all corners)
+                rectTransform.anchorMin = Vector2.zero;
+                rectTransform.anchorMax = Vector2.one;
+                rectTransform.offsetMin = Vector2.zero;
+                rectTransform.offsetMax = Vector2.zero;
+                
+                Logging.Debug("[GameManager] UI parented to MainCanvas with stretch-fill anchoring");
+            }
+            else
+            {
+                // Fallback: just parent without RectTransform adjustments
+                uiInstance.transform.SetParent(mainCanvasObj.transform, false);
+                Logging.Warning("[GameManager] UI does not have RectTransform, parented without anchor adjustment");
+            }
+            
+            // Create TaskCompletionSource for awaiting
+            var tcs = new System.Threading.Tasks.TaskCompletionSource<bool>();
+            
+            // Initialize the component with pack count
+            component.Initialize(count);
+            
+            // Call GiveBooster to start the sequence
+            component.GiveBooster(() =>
+            {
+                Logging.Debug("[GameManager] Booster reward UI sequence completed");
+                Destroy(uiInstance);
+                tcs.SetResult(true);
+            });
+            
+            // Await completion
+            await tcs.Task;
+            
+            // Restore input mode to GameAndUI (default gameplay mode)
+            InputManager.Instance?.SetInputMode(InputMode.GameAndUI);
+            Logging.Debug("[GameManager] Restored to GameAndUI input mode");
+        }
+
 
         // Helper method to get settings
         private T GetSettings<T>() where T : class