🔧 Fixing Koch Analytics Column Issue...

🔍 Checking current table structure...
✅ koch_character_analytics table exists with columns:
   - id (int(11))
   - username (varchar(255))
   - char_symbol (char(10))
   - session_date (datetime)
   - attempts (int(11))
   - correct (int(11))
   - accuracy (decimal(5,2))
   - avg_response_time (decimal(6,2))
   - min_response_time (decimal(6,2))
   - max_response_time (decimal(6,2))
   - common_errors (longtext)
   - error_patterns (longtext)
   - improvement_rate (decimal(5,2))
   - mastery_level (enum('learning','practicing','mastered','expert'))
   - consecutive_correct (int(11))
   - char_speed (int(11))
   - effective_speed (int(11))
   - session_id (bigint(20))

✅ Table already has correct 'char_symbol' column

🔨 Ensuring all Koch analytics tables exist...
✅ koch_progression_analytics table ready
✅ koch_speed_analytics table ready
✅ koch_achievements table ready

🧪 Testing API compatibility...
✅ API query structure is compatible
✅ Koch analytics API should now work correctly

🎉 Koch Analytics Fix Complete!
📊 Your Koch trainer should now save analytics successfully
🔗 Test the trainer at: koch-cw-trainer.html