The four dancers in residence, from left, Aisha Reddick, Nick McGhee, Diane Campaña and Odessa Uno. (Photo by Argel Valdez/Arts District Liberty Station) The commute to Liberty Station begins hours before sunrise for Diane Campaña, with a wait at the San Ysidro border crossing that can stretch one, two, sometimes three hours before she reaches the trolley that carries her the rest of the way. That waiting, the ache of moving between two countrie…