fix: refine MCP server configuration for multi-agent multi-server routing

- Adjusted `math_server.py` and `calc_server.py` to support many-to-many agent-server interactions
- Resolved config inconsistencies causing agents to fail output delivery
- Ensured each agent can access appropriate tools from multiple MCP servers

examples/mcp_example/calc_server.py

@@ -19,4 +19,4 @@ def simple_interest(principal: float, rate: float, time: float) -> float:
 
 if __name__ == "__main__":
     print("Starting Calculation Server on port 6275...")
-    mcp.run(transport="sse", port=6275)
+    mcp.run(transport="sse", host="0.0.0.0", port=6275)

examples/mcp_example/math_server.py

@@ -29,4 +29,4 @@ def divide(a: float, b: float) -> float:
 
 if __name__ == "__main__":
     print("Starting Math Server on port 6274...")
-    mcp.run(transport="sse", port=6274)
+    mcp.run(transport="sse", host="0.0.0.0", port=6274)