add: implementacao inicial

Program.cs

@@ -1,41 +1,56 @@
+// Note: repository implementation removed for workshop exercise (TODOs in project files)
+using Microsoft.AspNetCore.Diagnostics;
+using Microsoft.AspNetCore.Mvc;
+
 var builder = WebApplication.CreateBuilder(args);
 
-// Add services to the container.
-// Learn more about configuring OpenAPI at https://aka.ms/aspnet/openapi
-builder.Services.AddOpenApi();
+// Add services
+builder.Services.AddControllers();
+builder.Services.AddEndpointsApiExplorer();
+builder.Services.AddSwaggerGen(o =>
+{
+    o.SwaggerDoc("v1", new Microsoft.OpenApi.Models.OpenApiInfo
+    {
+        Title = "CampusWorkshops API",
+        Version = "v1",
+        Description = "API para gestão de workshops do campus (MVP in-memory)."
+    });
+});
+
+// DI
 
 var app = builder.Build();
 
-// Configure the HTTP request pipeline.
-if (app.Environment.IsDevelopment())
+// Exception handler that returns RFC7807 ProblemDetails for unhandled errors
+app.UseExceptionHandler(errApp =>
 {
-    app.MapOpenApi();
-}
+    errApp.Run(async context =>
+    {
+        var feature = context.Features.Get<IExceptionHandlerFeature>();
+        var ex = feature?.Error;
+
+        var pd = new ProblemDetails
+        {
+            Title = "An unexpected error occurred.",
+            Status = StatusCodes.Status500InternalServerError,
+            Detail = app.Environment.IsDevelopment() ? ex?.Message : null
+        };
+
+        context.Response.StatusCode = pd.Status.Value;
+        context.Response.ContentType = "application/problem+json";
+        await context.Response.WriteAsJsonAsync(pd);
+    });
+});
 
 app.UseHttpsRedirection();
 
-var summaries = new[]
+app.UseSwagger();
+app.UseSwaggerUI(c =>
 {
-    "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
-};
+    c.SwaggerEndpoint("/swagger/v1/swagger.json", "CampusWorkshops API v1");
+    c.RoutePrefix = "swagger"; // serve at /swagger
+});
 
-app.MapGet("/weatherforecast", () =>
-{
-    var forecast =  Enumerable.Range(1, 5).Select(index =>
-        new WeatherForecast
-        (
-            DateOnly.FromDateTime(DateTime.Now.AddDays(index)),
-            Random.Shared.Next(-20, 55),
-            summaries[Random.Shared.Next(summaries.Length)]
-        ))
-        .ToArray();
-    return forecast;
-})
-.WithName("GetWeatherForecast");
+app.MapControllers();
 
 app.Run();
-
-record WeatherForecast(DateOnly Date, int TemperatureC, string? Summary)
-{
-    public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
-}