The county is in the early phases of implementing a new program that will provide permanent housing and ongoing support for 50 chronically homeless people. An outline of the Whole Person Care program, expected to launch in October, was presented on Tuesday during the first-ever joint meeting of the Board of Supervisors and the Marin Housing Authority’s board of commissioners. Carrie Ellen Sager, the county’s homelessness program coordinator, told supervisors and commissioners that this effort…