Add backbone for card creation and implement Camera minigame mechanics

Assets/Scripts/UI/CardSystem/CardAlbumUI.cs

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+using System;
+using AppleHills.Data.CardSystem;
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace AppleHills.UI.CardSystem
+{
+    /// <summary>
+    /// Main UI controller for the card album system.
+    /// Manages the backpack icon and navigation between card system pages.
+    /// </summary>
+    public class CardAlbumUI : MonoBehaviour
+    {
+        [Header("UI References")]
+        [SerializeField] private GameObject backpackIcon;
+        [SerializeField] private UIPage mainMenuPage;
+        [SerializeField] private UIPage albumViewPage;
+        [SerializeField] private UIPage boosterOpeningPage;
+        
+        [Header("UI Elements")]
+        [SerializeField] private Button backpackButton;
+        [SerializeField] private Text boosterCountText;
+        
+        private UIPageController _pageController;
+        private CardSystemManager _cardManager;
+        private bool _isInitialized = false;
+        
+        private void Awake()
+        {
+            // Get or create a UI page controller
+            _pageController = FindAnyObjectByType<UIPageController>();
+            if (_pageController == null)
+            {
+                GameObject controllerObj = new GameObject("UIPageController");
+                controllerObj.transform.SetParent(transform);
+                _pageController = controllerObj.AddComponent<UIPageController>();
+            }
+            
+            // Initialize pages and hide them
+            InitializePages();
+            
+            // Set up backpack button
+            if (backpackButton != null)
+            {
+                backpackButton.onClick.AddListener(OnBackpackButtonClicked);
+            }
+            
+            // Initially show only the backpack icon
+            ShowOnlyBackpackIcon();
+        }
+
+        private void Start()
+        {
+            // Get card manager
+            _cardManager = CardSystemManager.Instance;
+            
+            // Subscribe to events
+            if (_cardManager != null)
+            {
+                _cardManager.OnBoosterCountChanged += UpdateBoosterCount;
+                UpdateBoosterCount(_cardManager.GetBoosterPackCount());
+            }
+            
+            _isInitialized = true;
+        }
+        
+        private void OnDestroy()
+        {
+            // Unsubscribe from events
+            if (_cardManager != null)
+            {
+                _cardManager.OnBoosterCountChanged -= UpdateBoosterCount;
+            }
+            
+            // Clean up button listeners
+            if (backpackButton != null)
+            {
+                backpackButton.onClick.RemoveListener(OnBackpackButtonClicked);
+            }
+        }
+
+        /// <summary>
+        /// Initializes all UI pages and sets them up with proper callbacks
+        /// </summary>
+        private void InitializePages()
+        {
+            // Ensure all pages are inactive at start
+            if (mainMenuPage != null) 
+            {
+                mainMenuPage.gameObject.SetActive(false);
+            }
+            
+            if (albumViewPage != null) 
+            {
+                albumViewPage.gameObject.SetActive(false);
+            }
+            
+            if (boosterOpeningPage != null) 
+            {
+                boosterOpeningPage.gameObject.SetActive(false);
+            }
+            
+            // Set up page changed callback
+            if (_pageController != null)
+            {
+                _pageController.OnPageChanged += OnPageChanged;
+            }
+        }
+
+        /// <summary>
+        /// Handles click on the backpack icon
+        /// </summary>
+        private void OnBackpackButtonClicked()
+        {
+            // If no pages are open, push the main menu
+            if (_pageController.CurrentPage == null)
+            {
+                _pageController.PushPage(mainMenuPage);
+            }
+            else if (_pageController.CurrentPage == mainMenuPage)
+            {
+                // If main menu is open, pop it
+                _pageController.PopPage();
+            }
+        }
+        
+        /// <summary>
+        /// Handles changes to the current page
+        /// </summary>
+        private void OnPageChanged(UIPage newPage)
+        {
+            // Hide/show backpack icon based on current page
+            if (newPage == null)
+            {
+                ShowOnlyBackpackIcon();
+            }
+            else
+            {
+                backpackIcon.SetActive(false);
+            }
+        }
+
+        /// <summary>
+        /// Shows only the backpack icon, hiding all other UI elements
+        /// </summary>
+        private void ShowOnlyBackpackIcon()
+        {
+            backpackIcon.SetActive(true);
+        }
+
+        /// <summary>
+        /// Opens the album view page
+        /// </summary>
+        public void OpenAlbumView()
+        {
+            _pageController.PushPage(albumViewPage);
+        }
+
+        /// <summary>
+        /// Opens the booster opening page if boosters are available
+        /// </summary>
+        public void OpenBoosterPack()
+        {
+            if (_cardManager != null && _cardManager.GetBoosterPackCount() > 0)
+            {
+                _pageController.PushPage(boosterOpeningPage);
+            }
+            else
+            {
+                Debug.Log("[CardAlbumUI] No booster packs available");
+                // TODO: Show "no boosters available" message
+            }
+        }
+        
+        /// <summary>
+        /// Updates the booster count display
+        /// </summary>
+        private void UpdateBoosterCount(int count)
+        {
+            if (boosterCountText != null)
+            {
+                boosterCountText.text = count.ToString();
+            }
+        }
+    }
+}