Refine admin login flow and verification harness

src/TaxBaik.Web.Client/Components/Admin/Pages/Contracts.razor

@@ -147,7 +147,7 @@ else
     private MudForm? form;
     private bool isEditMode;
     private Contract? selectedContract;
-    private ContractForm contractForm = new();
+    private ContractFormModel contractForm = new();
 
     private RenderFragment ContractSkeleton => builder =>
     {
@@ -198,7 +198,7 @@ else
     {
         selectedContract = null;
         isEditMode = false;
-        contractForm = new ContractForm
+        contractForm = new ContractFormModel
         {
             ClientId = clients.FirstOrDefault()?.Id,
             StartDate = DateTime.Today
@@ -210,7 +210,7 @@ else
         if (contract == null) return;
         selectedContract = contract;
         isEditMode = true;
-        contractForm = new ContractForm
+        contractForm = new ContractFormModel
         {
             ClientId = contract.ClientId,
             ContractNumber = contract.ContractNumber,
@@ -292,12 +292,4 @@ else
                 ? client.Name
                 : $"Client #{client.Id}";
 
-    private class ContractForm
-    {
-        public int? ClientId { get; set; }
-        public string ContractNumber { get; set; } = "";
-        public string ServiceType { get; set; } = "";
-        public DateTime? StartDate { get; set; }
-        public decimal? MonthlyFee { get; set; }
-    }
 }