Where a law enforcement witness who has been seated at counsel table throughout trial gives testimony bolstering other witnesses' credibility and summarizing the State's case, do the resulting capital murder conviction and death sentence violate the defendant's rights to due process, trial by jury, and a reliable process in keeping with this Court's heightened standards in death-penalty cases?

Does a capital murder conviction and death sentence violate due-process, trial-by-jury, and reliable-process rights when a law-enforcement witness who sat at counsel table throughout trial gives testimony bolstering other witnesses' credibility and summarizing the state's case?