david df49a9aa7c book-4 L3 & L4: dissolve word-list intros into sentences ...

Regenerated with the firmed guide rule: a topic's vocab is now
introduced via TTS sentences (VOCAB + sentence per word), with the
cassette word-drill kept after as pronunciation reinforcement — no
cold word-list opener survives. 100% cassette coverage retained;
auto-declared dialogue speakers given proper voices.

Co-authored-by: Cursor <cursoragent@cursor.com>

2026-06-18 10:30:07 +08:00

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