add: Book 4 Lesson 1 master module — 5 lessons (1A-1E), 51 activities from ST L1 + LLA 1A-1D

Co-authored-by: Cursor <cursoragent@cursor.com>
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2026-06-12 01:59:11 +08:00
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commit 9165d0791c
337 changed files with 1341 additions and 0 deletions

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book-4-lesson-1.module Normal file

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