Enable CORS for the Vite dev origin

backend/Program.cs

@@ -8,7 +8,14 @@ var builder = WebApplication.CreateBuilder(args);
 builder.Services.AddDbContext<AppDbContext>(options =>
     options.UseNpgsql(builder.Configuration.GetConnectionString("Postgres")));
 
-// MARKER: CORS SERVICES
+const string DevCorsPolicy = "DevCors";
+builder.Services.AddCors(options =>
+{
+    options.AddPolicy(DevCorsPolicy, policy => policy
+        .WithOrigins("http://localhost:5173")
+        .AllowAnyHeader()
+        .WithMethods("GET", "POST", "PATCH", "DELETE"));
+});
 
 builder.Services
     .AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
@@ -37,7 +44,10 @@ builder.Services.AddControllers();
 
 var app = builder.Build();
 
-// MARKER: CORS MIDDLEWARE
+if (app.Environment.IsDevelopment())
+{
+    app.UseCors(DevCorsPolicy);
+}
 
 app.UseAuthentication();
 app.UseAuthorization();