When most people ponder the past at the Transbay Terminal construction site, they imagine the hustle and bustle of gray-suited commuters swarming in and out of the Art Deco-style train depot in the mid-20th century. But archaeologists working at the site during demolition of the dingy old terminal last winter and construction of its grand replacement have unearthed artifacts that help reveal what it must have been like to live in the Irish working-class neighborhood that existed in that part of the South of Market in the mid- to late 1800s. They've dug up bottles that once held soda, booze...