fix: CRM 다이얼로그의 ClientId 바인딩을 Nullable int? 로 변경하고 CompanyName null 대비 Fallback 이름을 Name으로 매핑하여 MudSelect 초기 렌더링 Circuit 크래시 원천 차단

TaxBaik.Web/Components/Admin/Pages/TaxFilingSchedules.razor

@@ -117,16 +117,17 @@
     </TitleContent>
     <DialogContent>
         <MudForm @ref="form">
-            <MudSelect T="int"
+            <MudSelect T="int?"
                        @bind-Value="scheduleForm.ClientId"
                        Label="고객"
                        Required="true"
                        Variant="Variant.Outlined"
                        FullWidth="true"
-                       Class="mb-4">
+                       Class="mb-4"
+                       RequiredError="고객을 선택하세요.">
                 @foreach (var client in clients)
                 {
-                    <MudSelectItem Value="@client.Id">@client.CompanyName</MudSelectItem>
+                    <MudSelectItem Value="@((int?)client.Id)">@(string.IsNullOrEmpty(client.CompanyName) ? client.Name : client.CompanyName)</MudSelectItem>
                 }
             </MudSelect>
             <MudSelect T="string" @bind-Value="scheduleForm.FilingType" Label="신고 유형" Variant="Variant.Outlined" FullWidth="true" Class="mb-4" Required="true">
@@ -197,7 +198,7 @@
         {
             FilingYear = DateTime.Now.Year,
             DueDate = DateTime.Today,
-            ClientId = clients.FirstOrDefault()?.Id ?? 0
+            ClientId = clients.FirstOrDefault()?.Id
         };
         isDialogOpen = true;
     }
@@ -216,8 +217,9 @@
 
         try
         {
+            if (scheduleForm.ClientId == null) return;
             var newId = await TaxFilingClient.CreateAsync(
-                scheduleForm.ClientId,
+                scheduleForm.ClientId.Value,
                 scheduleForm.FilingType,
                 scheduleForm.DueDate ?? DateTime.Today,
                 scheduleForm.FilingYear);