In the fast and chic world of real estate staging, it's the ultimate job, the home of all homes, the stage of all stages.Genoa resident Bonnie Foster, owner of Shamrock Staged Homes, was notified this fall that she had been chosen to help decorate the White House for the holidays.A retired nurse turned professional stager, Foster, 72, had filled out an application earlier in the year detailing her business and staging experience. She was selected from a pool of 1,000 applicants to join 84 other professionals in a five-day decorating spree beginning the day after Thanksgiving."We were there for a …