Prohibits segregated confinement of children in a detention facility

This bill prohibits detention facilities from placing children in "segregated confinement" (cell confinement for more than 17 hours daily) under any circumstances, except during facility-wide emergencies or for medical/mental health treatment. It directly affects children detained under New York's Family Court Act or Criminal Procedure Law who are held in certified detention facilities. The law defines "segregated confinement" specifically and excludes room confinement authorized by the Office of Children and Family Services when a child poses a serious immediate danger to themselves or others. The bill amends the Family Court Act and Executive Law to implement this ban, taking effect immediately upon passage.