feat(udt-001): application layer with LoginCommandHandler and ports

src/api/SIGCM2.Application/DependencyInjection.cs

@@ -0,0 +1,20 @@
+using FluentValidation;
+using Microsoft.Extensions.DependencyInjection;
+using SIGCM2.Application.Abstractions;
+using SIGCM2.Application.Auth.Login;
+
+namespace SIGCM2.Application;
+
+public static class DependencyInjection
+{
+    public static IServiceCollection AddApplication(this IServiceCollection services)
+    {
+        // Register command handlers
+        services.AddScoped<ICommandHandler<LoginCommand, LoginResponseDto>, LoginCommandHandler>();
+
+        // Register FluentValidation validators from this assembly
+        services.AddValidatorsFromAssemblyContaining<LoginCommandValidator>();
+
+        return services;
+    }
+}