Part civics lesson, part memoir—at once bittersweet and beautiful— Heidi Schreck’s mostly one-woman play “What the Constitution Means to Me” at New York Theatre Workshop recounts her formative experience of wrestling with the constitution’s meaning as a teenager through the lens of her adult self, the women in her family, and the bitterly divided nation it serves. Heartbreaking, humorous, brilliant, and profoundly important, this is a must-see event of the fall season.