DeviceHub: /device WS with bearer auth + hello/hello_ack + ping/pong

backend/Program.cs

@@ -1,5 +1,6 @@
 using backend.Auth;
 using backend.Data;
+using backend.DeviceHub;
 using backend.Devices;
 using backend.Install;
 using backend.Pairing;
@@ -41,6 +42,7 @@ builder.Services.AddSingleton<backend.Tools.ITool, backend.Tools.SetVolumeTool>(
 builder.Services.AddSingleton<backend.Tools.ToolRegistry>();
 builder.Services.AddScoped<backend.Realtime.RealtimeSessionFactory>();
 builder.Services.AddSingleton<backend.DeviceHub.DeviceRegistry>();
+builder.Services.AddScoped<backend.DeviceHub.DeviceAuth>();
 
 var app = builder.Build();
 
@@ -69,6 +71,9 @@ app.MapInstallEndpoints();
 
 app.MapGet("/health", () => Results.Ok(new { ok = true }));
 
+app.UseWebSockets();
+app.MapDeviceHub();
+
 app.Run();
 
 public partial class Program { }