{
      workout_title: string,                  // Workout name
      workout_id: string,                     // Unique workout ID
      target_duration_seconds: number,        // Target workout duration
      completed_reps_count: number,           // Total completed reps
      target_reps_count: number,              // Total target reps
      calories_burned: number,                // Calories burned (2 decimal places)
      completion_percentage: number,          // Workout completion % (2 decimal places)
      total_mistakes: number,                 // Total mistake count
      accuracy_score: number,                 // Overall accuracy (0-100)
      efficiency_score: number,               // Efficiency metric (0-100)
      total_exercise: number,                 // Number of exercises
      actual_hold_time_seconds: number,       // Time in correct position (timer-based)
      target_hold_time_seconds: number        // Target hold time (timer-based exercises)
}

{
  exercise_title: string,        // Exercise name
  time_spent: number,           // Seconds spent
  repeats: number,              // Reps completed
  total_reps: number,         // Required reps
  total_duration: number,       // Countdown time
  calories: number,             // Calories burned
  exercise_id: string,           // Exercise ID
  mistakes: Array<{             // Mistakes made
    mistake: string,
    count: number
  }>,
  average_accuracy?: number      // Average accuracy (0-1, optional)
}

{
      exercise_title: string,            // exercise name
      exercise_id: string,               // Unique exercise ID
      time_spent: number,                // Time on exercise in seconds
      perfect_hold_position: number,     // Time in correct position (timer-based)
      repeats: number,                   // Reps completed
      total_required_reps: number,       // Target reps
      total_required_time: number,       // Target time in seconds
      calories: number,                  // Calories burned (2 decimal places)
      mistakes: Array<{                  // Detailed mistake breakdown
        mistake: string,                 // Mistake description
        count: number                    // Occurrence count
      }>,
      mistake_count: number,             // Total mistakes for exercise
      accuracy_reps?: number[],          // Optional: Per-rep accuracy scores
      average_accuracy?: number          // Optional: Average accuracy (0-100)
}

{
  username: string,             // User's username
  score: number,                // User's score
  position: number              // Leaderboard position (1-based)
}