Changes backend in preparation for frontend work

src/SlpModularCms.Api/Program.cs

@@ -14,6 +14,8 @@ orchestrator.DiscoverModules();
 
 // 2. Add Core Infrastructure
 builder.Services.AddCoreInfrastructure(builder.Configuration);
+builder.Services.AddCmsCors(builder.Configuration);
+builder.Services.AddCmsRateLimiting(builder.Configuration);
 
 // 3. Add Module Services
 orchestrator.RegisterModuleServices(builder.Services);
@@ -29,6 +31,8 @@ var app = builder.Build();
 // 5. Global Exception Handling
 app.UseExceptionHandler();
 
+app.UseRateLimiter();
+
 // 6. Configure Pipeline
 if (app.Environment.IsDevelopment())
 {
@@ -38,6 +42,8 @@ if (app.Environment.IsDevelopment())
 
 app.UseHttpsRedirection();
 
+app.UseCors();
+
 // 7. Use Module Middleware
 orchestrator.UseModules(app);