Adjust runtime calculation for parallel jobs

Update runtime calculation to reflect the impact of parallel job execution, dividing the total runtime by the number of parallel runs.

src/components/JobCardDetails.tsx

@@ -203,7 +203,7 @@ const JobCardDetails: React.FC<JobCardDetailsProps> = ({ job }) => {
               <span>Runtime:</span>
             </div>
             <div className="text-sm text-white flex items-center gap-1">
-              {formatDuration(job.runtime)}
+              {formatDuration(job.runtime / (job.parallel || 1))}
               <span className="text-gray-400">(</span>
               {editingField === 'parallel' ? (
                 <Input