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(defun build-books-stub
  (book-paths state)
  "Build a list of books. This is a stub for certification.
   The real implementation is in the raw Lisp loader."
  (declare (xargs :guard (string-listp book-paths)
      :stobjs state
      :mode :program)
    (ignore book-paths))
  (mv "Build function stub - load raw Lisp for actual functionality"
    state))