- Integrated Quiz completion with ProgressService: when a quiz is passed (>=80%), the associated lesson is automatically marked as completed
- Created LessonUnlockService for centralized lesson unlocking business logic
- Created LevelCompletionCalculator for calculating level completion metrics
- Registered new services in Program.cs DI container
- Updated QuizQuestionService to include ProgressService dependency
- Updated documentation (ROADMAP.md, lesson-management.md) to reflect completion
- Fixed QuizQuestionServiceTests to work with updated dependencies
All tests pass (296 total: 148 unit + 148 integration).
Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>
