There are two types of people: those who think salad can be dinner and those who don’t. (Maybe an oversimplification, but I stand by it.) I get it; for some people, dinner is only dinner if it’s a meal served hot. The same people may wonder if a salad can be substantial enough to fill you up. And as it stands now, I make salad for dinner only at the height of summer, when the idea of a cold, light meal made with gorgeous, fresh vegetables is as …