Update app.py

app.py

@@ -16,7 +16,7 @@ mcp = FastMCP("Robot MCP")
 #stio = STIO(mcp)  # Bind STIO to MCP tools
 
 # --- MCP Tool ---
-@mcp.tools()
+@mcp.tool()
 def say_hi(greeting_text: str = "Hi there!"):
     """Return a greeting command in JSON."""
     return {"command": "say_hi", "text": greeting_text}