Whether there is a constitutional requirement that counsel engage in plea negotiations with prosecuting authorities to provide effective assistance and protect a defendant's autonomous rights

QUESTION(S) PRESENTED 1) Given this Court has ruled that our criminal justice system is largely a_ system of pleas rather than trials, is there a constitutional requirement that counsel engage in plea negotiations with prosecuting authorities in order to provide a defendant effective assistance and protect the defendant's full panoply of autonomous rights? 2) Ina state, such as Colorado, when a defendant's priors are automatically introduced if he decides to testify, is there a constitutional requirement that the defendant be advised that his admission of prior convictions cannot be used to convict him of being an habitual criminal at a latter bifuricated bench trial on that matter? i.