fix: update mock multi-agent system to route requests to single calculator agent

- Modified `mock_multi_agent.py` to avoid duplicate responses from multiple calculators
- Integrated logic using `agent.py` and `mcp_integration.py` for proper agent-tool mapping
- Updated output formatting and response control for clearer user experience

examples/mcp_example/mock_multi_agent.py

@@ -42,15 +42,11 @@ class MathAgent:
 class MultiAgentMathSystem:
     def __init__(self):
         base_url = "http://0.0.0.0:8000"
-        self.agents = [
-            MathAgent("Calculator-1", base_url),
-            MathAgent("Calculator-2", base_url)
-        ]
+        self.calculator = MathAgent("Calculator", base_url)
 
     async def process_task(self, task: str):
-        tasks = [agent.process(task) for agent in self.agents]
-        results = await asyncio.gather(*tasks)
-        return results
+        result = await self.calculator.process(task)
+        return [result]  # Keep list format for compatibility
 
     def run_interactive(self):
         print("\nMulti-Agent Math System")
@@ -64,12 +60,12 @@ class MultiAgentMathSystem:
 
                 results = asyncio.run(self.process_task(user_input))
                 
-                print("\nResults:")
-                for result in results:
+                print("\nResult:")
+                result = results[0]  # We now only have one result
                 if "error" in result:
-                        print(f"\n{result['agent']} encountered an error: {result['error']}")
+                    print(f"\nCalculator encountered an error: {result['error']}")
                 else:
-                        print(f"\n{result['agent']} response: {result['response']}")
+                    print(f"\nCalculation: {result['response']}")
 
             except Exception as e:
                 print(f"System error: {str(e)}")