So La Cieca’s Met spy tells her that Angela Gheorghiu sauntered into a rehearsal for the Café Momus scene 45 minutes late after what must have been a leisurely lunch, then proceeded to offer “suggestions” improving upon the Franco Zeffirelli staging of the scene. La Cieca would say that given the diva’s track record, the Met is well ahead of the curve. The first of seven sold-out performances of La bohème is Saturday night.