🧪☔ Add tests to check for bugs and improve code reliability

app.py

@@ -24,7 +24,7 @@ def get_cat_images(limit: int = 1) -> list:
     Args:
         limit: Number of images to return between 1 and 100
     """
-    return limit# to check if the agent numbers correctly, sometimes asking for 3 images return more than 5
+    return [f"Non-working link: {limit}"]# to check if the agent numbers correctly, sometimes asking for 3 images return more than 5
     # Ensure the limit is within the allowed range
     if limit < 1 or limit > 100:
         return "Limit must be between 1 and 100."