fix: structure_daily_tasks_tool arguments description

app.py

@@ -9,7 +9,7 @@ from Gradio_UI import GradioUI
 
 # Below is an example of a tool that does nothing. Amaze us with your creativity !
 @tool
-def structure_daily_tasks_tool(tasks: list, start_time: str, end_time: str) -> str:
+def structure_daily_tasks_tool(tasks: list[str], start_time: str, end_time: str) -> str:
     """
     Structure daily tasks within a given time frame.