Summer means free theater in New York, and Molière in the Park, an organization co-founded by Lucie Tiberghien and Garth Belcon. The Miser becomes the third free production at LeFrak Center, following The Misanthrope (2022) and Tartuffe (2023). Directed by Tiberghien, it’s an invigorating new version of the French playwright’s 1668 satire.