WIP lots of new tests and validation scenarios

Simulation tests to confirm threading and history traversal
Chain of communication and branching validation tests from live simulation
Temperature enforcement per model

server.py

@@ -310,7 +310,7 @@ final analysis and recommendations."""
         remaining_turns = max_turns - current_turn_count - 1
         return f"""
 
-🤝 CONVERSATION THREADING: You can continue this discussion with Claude! ({remaining_turns} exchanges remaining)
+CONVERSATION THREADING: You can continue this discussion with Claude! ({remaining_turns} exchanges remaining)
 
 If you'd like to ask a follow-up question, explore a specific aspect deeper, or need clarification,
 add this JSON block at the very end of your response:
@@ -323,7 +323,7 @@ add this JSON block at the very end of your response:
 }}
 ```
 
-💡 Good follow-up opportunities:
+Good follow-up opportunities:
 - "Would you like me to examine the error handling in more detail?"
 - "Should I analyze the performance implications of this approach?"
 - "Would it be helpful to review the security aspects of this implementation?"