Update _iStatFlag for stash items

Source/items.cpp

@@ -2713,6 +2713,10 @@ void CalcPlrInv(Player &player, bool loadgfx)
 		CalcPlrBookVals(player);
 		player.CalcScrolls();
 		CalcPlrStaff(player);
+		if (IsStashOpen) {
+			// If stash is open, ensure the items are displayed correctly
+			Stash.RefreshItemStatFlags();
+		}
 	}
 }
 

Source/qol/stash.cpp

@@ -548,6 +548,13 @@ void StashStruct::SetPage(int newPage)
 	page = clamp(newPage, 0, CountStashPages - 1);
 }
 
+void StashStruct::RefreshItemStatFlags()
+{
+	for (auto &item : Stash.stashList) {
+		item._iStatFlag = MyPlayer->CanUseItem(item);
+	}
+}
+
 void WithdrawGoldKeyPress(char vkey)
 {
 	auto &myPlayer = Players[MyPlayerId];

Source/qol/stash.h

@@ -28,6 +28,8 @@ public:
 	}
 
 	void SetPage(int newPage);
+	/** @brief Updates _iStatFlag for all stash items. */
+	void RefreshItemStatFlags();
 
 private:
 	/** Current Page */

Source/stores.cpp

@@ -2169,6 +2169,7 @@ void BarmaidEnter()
 	case 14:
 		stextflag = STORE_NONE;
 		IsStashOpen = true;
+		Stash.RefreshItemStatFlags();
 		invflag = true;
 		if (ControlMode != ControlTypes::KeyboardAndMouse) {
 			if (pcurs == CURSOR_DISARM)