feat(Production): Complete production deployment infrastructure

- Add comprehensive health check system with multiple endpoints
- Add Prometheus metrics endpoint
- Add production logging configurations (5 strategies)
- Add complete deployment documentation suite:
  * QUICKSTART.md - 30-minute deployment guide
  * DEPLOYMENT_CHECKLIST.md - Printable verification checklist
  * DEPLOYMENT_WORKFLOW.md - Complete deployment lifecycle
  * PRODUCTION_DEPLOYMENT.md - Comprehensive technical reference
  * production-logging.md - Logging configuration guide
  * ANSIBLE_DEPLOYMENT.md - Infrastructure as Code automation
  * README.md - Navigation hub
  * DEPLOYMENT_SUMMARY.md - Executive summary
- Add deployment scripts and automation
- Add DEPLOYMENT_PLAN.md - Concrete plan for immediate deployment
- Update README with production-ready features

All production infrastructure is now complete and ready for deployment.

src/Framework/Notification/Notification.php

@@ -4,12 +4,12 @@ declare(strict_types=1);
 
 namespace App\Framework\Notification;
 
+use App\Framework\Core\ValueObjects\Timestamp;
 use App\Framework\Notification\ValueObjects\NotificationChannel;
 use App\Framework\Notification\ValueObjects\NotificationId;
 use App\Framework\Notification\ValueObjects\NotificationPriority;
 use App\Framework\Notification\ValueObjects\NotificationStatus;
 use App\Framework\Notification\ValueObjects\NotificationType;
-use App\Framework\Core\ValueObjects\Timestamp;
 
 /**
  * Core notification entity
@@ -258,7 +258,7 @@ final readonly class Notification
             'title' => $this->title,
             'body' => $this->body,
             'data' => $this->data,
-            'channels' => array_map(fn($c) => $c->value, $this->channels),
+            'channels' => array_map(fn ($c) => $c->value, $this->channels),
             'priority' => $this->priority->value,
             'status' => $this->status->value,
             'created_at' => $this->createdAt->format('Y-m-d H:i:s'),