feat: enable gateway buttons - remove بزودی disabled state

- ChargeDiscountWallet: active payment button with StartDiscountCharge
- MagicWallet: active payment button with StartMagicCharge
- Index: both branch buttons call DirectPayment with loading state

src/FrontOffice.Main/Pages/Profile/MagicWallet.razor

@@ -138,13 +138,22 @@
                         </MudStack>
 
                         <MudButton Variant="Variant.Filled"
-                                   Color="Color.Default"
+                                   Color="Color.Primary"
                                    Size="Size.Large"
                                    FullWidth="true"
-                                   Disabled="true"
-                                   StartIcon="@Icons.Material.Filled.AccessTime"
+                                   Disabled="@(_isProcessing || _chargeAmount < 10_000)"
+                                   OnClick="StartMagicCharge"
+                                   StartIcon="@Icons.Material.Filled.Payment"
                                    Class="rounded-lg mt-2">
-                            <span>بزودی</span>
+                            @if (_isProcessing)
+                            {
+                                <MudProgressCircular Size="Size.Small" Indeterminate="true" Class="me-2" />
+                                <span>در حال انتقال به درگاه...</span>
+                            }
+                            else
+                            {
+                                <span>پرداخت با کارت بانکی</span>
+                            }
                         </MudButton>
                     </MudStack>
                 </MudPaper>