The play’s futuristic framework notwithstanding, and despite the distinct “Groundhog Day” element to its conceit, connoisseurs of Nora Ephron’s movie “You’ve Got Mail” will detect several echoes of that classic here. Not because of any writerly pilfering but mainly because Hanks, who made his Broadway debut a dozen years ago in a posthumous production of Ephron’s “Lucky Guy,” is the one speaking the lines.