This directory contains shared code and type definitions used by both the frontend and backend.

• types.ts - TypeScript interfaces and types for the platform

The shared types include:

• Lesson - Lesson content structure
• Exercise - Exercise definition structure
• TestCase - Test case for validating exercise solutions
• CompilationResult - Result of code compilation
• TestResult - Result of testing a solution
• ValidationResult - Overall validation result for a solution
• User - User information
• UserProgress - User progress tracking
• UserSolution - User submitted solutions
• LearningPathItem - Lesson with progress information