Converted, refined, and re-sliced both LLA tracks from the tape with the
tester-round rules (passage->DIALOGUE+REFERENCE splits, vocab on the first
teaching line, sentence-sized read-only cards, merged-beat detection with
best-of-two sampling, repair loop hard-gated on figure coverage).
Book 10 masters now include tape lessons 2C-4D — ten lessons of audio content
the earlier masters never shipped (they used only 1A-2B). All ten masters
lint clean, 100% cassette coverage on every taped lesson.
Co-authored-by: Cursor <cursoragent@cursor.com>
