Noticing not everyone is reading this the way I did; a friend I ran into afterwards gave me a beaming "That was fun!," whereas I was left rather shaken. And it is fun — to a point. For most of the runtime, this played as a bourgeois French comedy — a razor-sharp bourgeois French comedy, mind you. (The dazzling opening has the film hit the ground running, with a minor character speeding through a dense rant to our protagonist, all…