Add GPU warmup function and update requirements to include 'spaces'

app.py

@@ -3,11 +3,17 @@ import datetime
 import requests
 import pytz
 import yaml
+import spaces
 from tools.final_answer import FinalAnswerTool
 from tools.web_search import DuckDuckGoSearchTool
 
 from Gradio_UI import GradioUI
 
+@spaces.GPU
+def _warmup_gpu():
+    """Satisfies HF Spaces' ZeroGPU startup check; this app runs on CPU via the HF Inference API."""
+    return True
+
 # Below is an example of a tool that does nothing. Amaze us with your creativity !
 @tool
 def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return type

requirements.txt

@@ -3,3 +3,4 @@ smolagents==1.13.0
 requests
 duckduckgo_search
 pandas
+spaces