feat(agent): streamline conversation flow logic in copilot

- Remove unused `llm_calls` variable and redundant logging in `should_continue`
- Simplify title generation routing by eliminating unnecessary condition checks
- Improve code clarity and maintainability by focusing on essential flow control

gns3server/agent/gns3_copilot/agent/gns3_copilot.py

@@ -345,7 +345,6 @@ def should_continue(
     - Otherwise → conversation is complete, go to END
     """
     last_message = state["messages"][-1]
-    llm_calls = state.get("llm_calls", 0)
     current_title = state.get("conversation_title")
 
     # LLM requested one or more tool executions
@@ -354,9 +353,6 @@ def should_continue(
 
     # First full interaction completed and title not yet generated
     if current_title in [None, "New Conversation"]:
-        logger.info(
-            "First turn finished, no title yet → routing to 'title_generator_node'"
-        )
         return "title_generator_node"
 
     # Normal completion (multi-turn conversation or title already exists)