U.S. Rep. Lori Chavez-DeRemer has agreed to participate in four televised debates ahead of the general election in Oregon’s closest congressional district.Chavez-DeRemer’s announcement continues more than a month of negotiations over debates since her Democratic opponent, state Rep. Janelle Bynum, challenged her to three debates — one hosted by a Portland TV station, one hosted by a Bend TV station and one live-streamed debate hosted by an organ…