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AUTOMATED CURL TESTING RESULTS: ✅ Normal answers get Socratic questions ✅ First 'don't know' gets another question ✅ Repeated 'don't know' gets explanation instead of questions! BUGS FIXED: - Added missing originalTopic parameter to server endpoint - Fixed undefined variable reference in repeated don't know handler - Server now properly extracts originalTopic from request body VERIFICATION COMPLETE: - Server logs show: '🎯 Detected repeated don't know - providing explanation' - System switches from questioning to explaining mode automatically - Both chat and step-by-step modes have full detection logic - German and English phrase detection working correctly The infinite questioning loop issue is completely resolved! Children now get appropriate help when they repeatedly say 'I don't know'.