feat: add withdrawal requests feature and update VAT loading mechanism

src/FrontOffice.Main/Pages/Store/Cart.razor.cs

@@ -16,7 +16,16 @@ public partial class Cart : ComponentBase, IDisposable
         // لود سبد خرید (فقط اگر کاربر لاگین کرده باشد)
         await CartService.EnsureInitializedAsync();
         CartService.OnChange += StateHasChanged;
-        await VAT.LoadAsync();
+    }
+
+    protected override async Task OnAfterRenderAsync(bool firstRender)
+    {
+        if (firstRender)
+        {
+            // بارگذاری نرخ VAT
+            await VAT.LoadAsync();
+        }
+        await base.OnAfterRenderAsync(firstRender);
     }
 
     private async Task IncrementQty(long productId)

src/FrontOffice.Main/Pages/Store/CheckoutSummary.razor.cs

@@ -30,7 +30,16 @@ public partial class CheckoutSummary : ComponentBase
         await Cart.EnsureInitializedAsync();
         await LoadAddresses();
         await LoadWalletBalance();
-        await VAT.LoadAsync();
+    }
+
+    protected override async Task OnAfterRenderAsync(bool firstRender)
+    {
+        if (firstRender)
+        {
+            // بارگذاری نرخ VAT
+            await VAT.LoadAsync();
+        }
+        await base.OnAfterRenderAsync(firstRender);
     }
 
     private async Task LoadWalletBalance()
@@ -79,7 +88,7 @@ public partial class CheckoutSummary : ComponentBase
         {
             var request = new SubmitShopBuyOrderRequest
             {
-                TotalAmount = Cart.Total
+                TotalAmount = VAT.AddVAT(Cart.Total)
             };
 
             var response = await UserOrderContract.SubmitShopBuyOrderAsync(request);

src/FrontOffice.Main/Pages/Store/Orders.razor.cs

@@ -19,7 +19,6 @@ public partial class Orders : ComponentBase
         _loading = true;
         try
         {
-            await VAT.LoadAsync();
             _orders = await OrderService.GetOrdersAsync();
         }
         catch (Exception ex)
@@ -33,6 +32,16 @@ public partial class Orders : ComponentBase
         }
     }
 
+    protected override async Task OnAfterRenderAsync(bool firstRender)
+    {
+        if (firstRender)
+        {
+            // بارگذاری نرخ VAT
+            await VAT.LoadAsync();
+        }
+        await base.OnAfterRenderAsync(firstRender);
+    }
+
     private static string FormatPrice(long price) => string.Format("{0:N0} تومان", price);
 
 

src/FrontOffice.Main/Pages/Store/ProductDetail.razor.cs

@@ -30,7 +30,7 @@ public partial class ProductDetail : ComponentBase, IDisposable
     private IReadOnlyList<ProductCategoryPathInfo> _categoryPaths = Array.Empty<ProductCategoryPathInfo>();
     private ProductGalleryImage? _selectedGalleryImage;
     private readonly List<BreadcrumbItem> _breadcrumbItems = new();
-    private long TotalPrice => VAT.AddVAT((_product?.Price ?? 0) * _qty);
+    private long TotalPrice => (_product?.Price ?? 0) * _qty;
     private bool HasDiscount => _product is { Discount: > 0 and < 100 };
 
     private long? OriginalPrice => HasDiscount && _product is not null
@@ -55,8 +55,7 @@ public partial class ProductDetail : ComponentBase, IDisposable
         await Cart.EnsureInitializedAsync();
         Cart.OnChange += HandleCartChanged;
         
-        // بارگذاری نرخ VAT
-        await VAT.LoadAsync();
+   
         
         _loading = true;
         _product = await ProductService.GetByIdAsync(id);
@@ -80,7 +79,15 @@ public partial class ProductDetail : ComponentBase, IDisposable
         await base.OnInitializedAsync();
     }
 
-  
+    protected override async Task OnAfterRenderAsync(bool firstRender)
+    {
+       await base.OnAfterRenderAsync(firstRender);
+        if (firstRender)
+        {
+            // بارگذاری نرخ VAT
+            await VAT.LoadAsync();
+        }
+    }
 
     private async Task AddToCart()
     {

src/FrontOffice.Main/Pages/Store/Products.razor.cs

@@ -26,10 +26,19 @@ public partial class Products : ComponentBase, IDisposable
         await Cart.EnsureInitializedAsync();
         Cart.OnChange += StateHasChanged;
         Navigation.LocationChanged += HandleLocationChanged;
-        await VAT.LoadAsync();
         await Load();
     }
 
+    protected override async Task OnAfterRenderAsync(bool firstRender)
+    {
+        if (firstRender)
+        {
+            // بارگذاری نرخ VAT
+            await VAT.LoadAsync();
+        }
+        await base.OnAfterRenderAsync(firstRender);
+    }
+
     private async Task Load()
     {
         _loading = true;