Stash work

Assets/Scripts/UI/CardSystem/StateMachine/States/CardFlippingPendingState.cs

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+using Core;
+using Core.SaveLoad;
+using UnityEngine;
+
+namespace UI.CardSystem.StateMachine.States
+{
+    /// <summary>
+    /// Handles flipping a pending face-down card after data assignment.
+    /// Transitions to DraggingRevealedState when flip completes.
+    /// </summary>
+    public class CardFlippingPendingState : AppleState
+    {
+        private CardContext context;
+        private GameObject cardBack;
+        
+        private void Awake()
+        {
+            context = GetComponentInParent<CardContext>();
+            if (context != null)
+            {
+                var backTransform = context.RootTransform.Find("CardBack");
+                if (backTransform != null) cardBack = backTransform.gameObject;
+            }
+        }
+        
+        public override void OnEnterState()
+        {
+            if (context == null) return;
+            // Ensure card back visible and front hidden at start
+            if (cardBack != null) cardBack.SetActive(true);
+            if (context.CardDisplay != null) context.CardDisplay.gameObject.SetActive(false);
+            
+            // Optional: album navigation
+            var albumPage = Object.FindObjectOfType<AlbumViewPage>();
+            if (albumPage != null && context.CardData != null)
+            {
+                int targetPage = albumPage.FindPageForCard(context.CardData); // placeholder; method may be private
+            }
+            
+            if (context.Animator != null)
+            {
+                Transform back = cardBack != null ? cardBack.transform : null;
+                Transform front = context.CardDisplay != null ? context.CardDisplay.transform : null;
+                context.Animator.PlayFlip(back, front, onComplete: () =>
+                {
+                    context.StateMachine.ChangeState("DraggingRevealedState");
+                });
+            }
+            else
+            {
+                if (cardBack != null) cardBack.SetActive(false);
+                if (context.CardDisplay != null) context.CardDisplay.gameObject.SetActive(true);
+                context.StateMachine.ChangeState("DraggingRevealedState");
+            }
+        }
+    }
+}