Manual exposure control on a P&S narrows the choice a lot. Maybe no camera can meet this requirement.

Firstly I thought of the Minolta TC-1 but that's Aperture Priority not full manual and has a 3.5 lens.The Ricoh GR1 family has the 2.8 lens but again, they're Aperture Priority, as is the Nikon 35TI and the Hexar. There's a bunch of '70s rangefinders that have manual exposure and 2.8 lenses, but they're not point and shoots as they require manual focusing.