Import royalty CSVs

Sales tab → Import royalty CSV. We auto-detect KDP, IngramSpark, Draft2Digital, Apple Books, Kobo, and Google Play column shapes. Rows are de-duped by an external reference so re-imports are safe. When Accounting is on, each sale auto-posts to journal entries (debit AR / credit Book Royalty Revenue) so your books-side income reconciles with your books-side accounting.