Initial commit: JDE Scoping Tool migration project

Set up repository with legacy .NET Framework 4.8 source (OLD/),
new .NET 10 Blazor solution (NEW/), OpenSpec specifications,
documentation, and project configuration.

NEW/src/JdeScoping.Client/Program.cs

@@ -0,0 +1,39 @@
+using JdeScoping.Client;
+using JdeScoping.Client.Auth;
+using JdeScoping.Client.Services;
+using Microsoft.AspNetCore.Components.Authorization;
+using Microsoft.AspNetCore.Components.Web;
+using Microsoft.AspNetCore.Components.WebAssembly.Hosting;
+using Radzen;
+
+var builder = WebAssemblyHostBuilder.CreateDefault(args);
+builder.RootComponents.Add<App>("#app");
+builder.RootComponents.Add<HeadOutlet>("head::after");
+
+// Configure HttpClient with base address
+// In Blazor WebAssembly, the browser automatically handles cookies for same-origin requests
+builder.Services.AddScoped(sp => new HttpClient
+{
+    BaseAddress = new Uri(builder.HostEnvironment.BaseAddress)
+});
+
+// Radzen services
+builder.Services.AddRadzenComponents();
+
+// Authentication services (cookie-based)
+builder.Services.AddAuthorizationCore();
+builder.Services.AddScoped<IUserStorageService, UserStorageService>();
+builder.Services.AddScoped<AuthStateProvider>();
+builder.Services.AddScoped<AuthenticationStateProvider>(sp => sp.GetRequiredService<AuthStateProvider>());
+builder.Services.AddScoped<IAuthService, AuthService>();
+
+// SignalR service
+builder.Services.AddScoped<IHubConnectionService, HubConnectionService>();
+
+// API client services
+builder.Services.AddScoped<ISearchService, SearchService>();
+builder.Services.AddScoped<ILookupService, LookupService>();
+builder.Services.AddScoped<IFileService, FileService>();
+builder.Services.AddScoped<IRefreshStatusService, RefreshStatusService>();
+
+await builder.Build().RunAsync();