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/ValueObjects/JobChain.php

@@ -82,6 +82,7 @@ final readonly class JobChain
     public function getJobPosition(string $jobId): ?int
     {
         $position = array_search($jobId, $this->jobIds, true);
+
         return $position !== false ? $position : null;
     }
 
@@ -138,7 +139,7 @@ final readonly class JobChain
             'execution_mode' => $this->executionMode->value,
             'stop_on_failure' => $this->stopOnFailure,
             'job_count' => $this->getJobCount(),
-            'metadata' => $this->metadata
+            'metadata' => $this->metadata,
         ];
     }
 
@@ -162,4 +163,4 @@ final readonly class JobChain
             }
         }
     }
-}
+}