8d794b6318
ROOT CAUSE FOUND: - Chat mode was missing repeated 'don't know' detection logic entirely - Only step-by-step mode had this functionality - Server had undefined variable error when checking instructions - This caused infinite questioning loops in chat conversations FIXES APPLIED: 1. Added complete repeated 'don't know' detection to chat mode: - Conversation history tracking (last 4 messages) - German phrase detection variants - Threshold-based triggering (2+ occurrences) - Proper context passing to server 2. Fixed server-side undefined variable error: - Added null check for instructions parameter - Prevents TypeError when checking for repeated scenarios 3. Enhanced context handling: - Chat mode now sends 'repeated_dont_know' context - Proper instruction differentiation for different scenarios - Better debugging logs for both modes RESULT: - Both chat AND step-by-step modes now detect repeated frustration - Children get explanations instead of endless questioning - Eliminated infinite loop scenarios completely - Better educational experience with adaptive responses