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/Queue/Services/DatabaseDeadLetterQueue.php

@@ -8,10 +8,9 @@ use App\Framework\Database\ConnectionInterface;
 use App\Framework\Database\EntityManager;
 use App\Framework\Database\ValueObjects\SqlQuery;
 use App\Framework\Queue\Contracts\DeadLetterQueueInterface;
-use App\Framework\Queue\Contracts\QueueInterface;
+use App\Framework\Queue\Queue;
 use App\Framework\Queue\Entities\DeadLetterJob;
 use App\Framework\Queue\ValueObjects\DeadLetterQueueName;
-use App\Framework\Queue\ValueObjects\JobPayload;
 use App\Framework\Queue\ValueObjects\QueueName;
 use App\Framework\Queue\ValueObjects\QueuePriority;
 
@@ -23,8 +22,9 @@ final readonly class DatabaseDeadLetterQueue implements DeadLetterQueueInterface
     public function __construct(
         private ConnectionInterface $connection,
         private EntityManager $entityManager,
-        private QueueInterface $originalQueue
-    ) {}
+        private Queue $originalQueue
+    ) {
+    }
 
     public function addFailedJob(DeadLetterJob $deadLetterJob): void
     {
@@ -69,7 +69,7 @@ final readonly class DatabaseDeadLetterQueue implements DeadLetterQueueInterface
         try {
             // Get the dead letter job
             $deadLetterJob = $this->findDeadLetterJob($deadLetterJobId);
-            if (!$deadLetterJob) {
+            if (! $deadLetterJob) {
                 return false;
             }
 
@@ -96,6 +96,7 @@ final readonly class DatabaseDeadLetterQueue implements DeadLetterQueueInterface
             return true;
         } catch (\Throwable $e) {
             $this->connection->rollback();
+
             throw $e;
         }
     }
@@ -122,6 +123,7 @@ final readonly class DatabaseDeadLetterQueue implements DeadLetterQueueInterface
     public function clearQueue(DeadLetterQueueName $deadLetterQueueName): int
     {
         $sql = "DELETE FROM dead_letter_jobs WHERE dead_letter_queue = ?";
+
         return $this->connection->execute(SqlQuery::create($sql, [$deadLetterQueueName->toString()]));
     }
 
@@ -150,7 +152,7 @@ final readonly class DatabaseDeadLetterQueue implements DeadLetterQueueInterface
             'avg_retry_count' => round((float) $stats['avg_retry_count'], 2),
             'max_retry_count' => (int) $stats['max_retry_count'],
             'oldest_job' => $stats['oldest_job'],
-            'newest_job' => $stats['newest_job']
+            'newest_job' => $stats['newest_job'],
         ];
     }
 
@@ -177,6 +179,7 @@ final readonly class DatabaseDeadLetterQueue implements DeadLetterQueueInterface
     private function deleteJobById(string $deadLetterJobId): bool
     {
         $sql = "DELETE FROM dead_letter_jobs WHERE id = ?";
+
         return $this->connection->execute(SqlQuery::create($sql, [$deadLetterJobId])) > 0;
     }
 
@@ -198,4 +201,4 @@ final readonly class DatabaseDeadLetterQueue implements DeadLetterQueueInterface
             lastRetryAt: $row['last_retry_at']
         );
     }
-}
+}