refactor(Program): simplify Quartz job registration and add EnvelopeTaskApiJob

- Replaced manual FinishEnvelopeJob Quartz setup with ScheduleJobDefault extension
- Added scheduling for EnvelopeTaskApiJob
- Updated using directives to include EnvelopeGenerator.Finalizer namespace
- Improved maintainability by removing redundant Quartz configuration logic

EnvelopeGenerator.Finalizer/Program.cs

@@ -1,6 +1,7 @@
 using CommandDotNet.Execution;
 using EnvelopeGenerator.Application.ThirdPartyModules.Queries;
 using EnvelopeGenerator.DependencyInjection;
+using EnvelopeGenerator.Finalizer;
 using EnvelopeGenerator.Finalizer.Job;
 using EnvelopeGenerator.Finalizer.Models;
 using EnvelopeGenerator.Infrastructure;
@@ -49,21 +50,8 @@ try
     #region Quartz
     builder.Services.AddQuartz(q =>
     {
-        var name = $"{typeof(FinishEnvelopeJob).FullName}";
-        var jobKey = new JobKey(name);
-        q.AddJob<FinishEnvelopeJob>(opts => opts.WithIdentity(jobKey));
-
-        var expression = config[nameof(FinishEnvelopeJob) + ":CronExpression"];
-        if (string.IsNullOrWhiteSpace(expression))
-            throw new InvalidOperationException(
-             "Cron expression for the Worker job is not configured. " +
-             "Please provide a valid cron schedule in the configuration under " +
-             $"'{nameof(FinishEnvelopeJob)}:CronExpression'.");
-
-        q.AddTrigger(opts => opts
-            .ForJob(jobKey)
-            .WithIdentity(name + "-trigger")
-            .WithCronSchedule(expression));
+        q.ScheduleJobDefault<FinishEnvelopeJob>(config);
+        q.ScheduleJobDefault<EnvelopeTaskApiJob>(config);
     });
 
     builder.Services.AddQuartzServer(options =>