feat(admin): restore Blazor WebAssembly architecture for admin pages with hybrid Server routing

TaxBaik.Web/Program.cs

@@ -54,7 +54,9 @@ builder.Services.AddHealthChecks();
 
 // Razor Pages + Blazor Server 통합
 builder.Services.AddRazorPages();
-builder.Services.AddRazorComponents().AddInteractiveServerComponents();
+builder.Services.AddRazorComponents()
+    .AddInteractiveServerComponents()
+    .AddInteractiveWebAssemblyComponents();
 builder.Services.Configure<Microsoft.AspNetCore.Components.Server.CircuitOptions>(options =>
 {
     options.DetailedErrors = true;
@@ -354,6 +356,8 @@ app.MapRazorPages();
 // 인증은 Blazor AuthorizeRouteView → RedirectToLogin 에서 처리한다.
 app.MapRazorComponents<TaxBaik.Web.Components.Admin.App>()
    .AddInteractiveServerRenderMode()
+   .AddInteractiveWebAssemblyRenderMode()
+   .AddAdditionalAssemblies(typeof(TaxBaik.WasmClient._Imports).Assembly)
    .AllowAnonymous();
 
 // 애플리케이션 시작/종료 로깅