- Add vocabulary learning system with recognition→familiarity→dialogue→review progression
- Add life points system (命條系統) with 5-hour auto-recovery mechanics
- Add spaced repetition algorithm using 2^review_count formula
- Add reply assistance system with 3-layer architecture and Google Translate integration
- Add 13-stage learning progression with sequential unlocking
- Update user flow specification with complete learning flows including life points checks
- Update AI algorithm specs with vocabulary learning modules
- Update business logic with comprehensive gamification mechanics
- Update content management with vocabulary data structures
- Update system schema with new data bindings: Vocabulary, VocabularyReview, LifePoints, ContinuousLearning, TimeWarp
- Add requirement documents for vocabulary review, vocabulary learning stages, scenario dialogue, and challenge learning
- Remove deprecated UI mockup images from 05_views directory
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
鄭沛軒
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