Mayor Paul Pontieri’s pride in the bustling Village of Patchogue is evident as he strolls along Main Street, stopping to pick up a stray plastic bag littering the sidewalk, point out the newest restaurant that’s just opened, or chat with the constituents who stop him to say hello.It was noontime on Presidents Day and shoppers walked along the street, the restaurants were full and Pontieri was clearly delighted.“I love it,” Pontieri said. “You walk downtown now, there’s a nice vibe, a lot of energy.”