fix(providers): retry transient Codex response failures (#1334)

Backport of #1332 to dev — retry transient Codex failures

cmd/gateway_cron.go

@@ -139,6 +139,7 @@ func makeCronJobHandler(sched *scheduler.Scheduler, msgBus *bus.MessageBus, cfg
 		var modelOverride string
 		if job.Model != nil {
 			modelOverride = *job.Model
+
 		}
 
 		// Schedule through cron lane — scheduler handles agent resolution and concurrency