Adam B. Vary Senior Entertainment WriterSPOILER WARNING: This story discusses major plot developments in Season 1, Episode 7 of Lucasfilm’s “The Book of Boba Fett,” currently streaming on Disney Plus.Prior to the debut of “The Book of Boba Fett,” the titular bounty hunter with the Mandalorian armor was at once one of the most beloved and least explored characters in the “Star Wars” universe.