Six months ago, the New Orleans Museum of Art was on the verge of launching a $100 million capital campaign and planning a major expansion of its building. Hurricane Katrina and its devastating aftermath, of course, changed everything, although the museum and its collection escaped largely unscathed. Six weeks after the storm, the museum was forced to lay off all but a skeleton staff. Now, the museum’s director finds himself attempting to sketch out a future in a city that may not have one of its own.