refactor: Use AddProfileWorker extension method in Program.cs

- Replace direct AddHostedService<ProfileManager> with AddProfileWorker()
- Enables IOptions configuration and validation at startup
- Add using directive for ECMJobRunner.WebCron.ProfileWorker namespace

ECMJobRunner.WebCron/Program.cs

@@ -1,6 +1,7 @@
 using ECMJobRunner.Application;
 using ECMJobRunner.Infrastructure;
 using ECMJobRunner.WebCron;
+using ECMJobRunner.WebCron.ProfileWorker;
 using Hangfire;
 using Hangfire.SqlServer;
 using Microsoft.Data.SqlClient;
@@ -53,7 +54,7 @@ try
 
 // Add services to the container.
 builder.Services.AddControllers();
-builder.Services.AddHostedService<ProfileManager>();
+builder.Services.AddProfileWorker(builder.Configuration);
 
 // Register services
 var cnnStr = builder.Configuration.GetConnectionString("SDD-VMP04-SQL17")