Update: Error correction in app.py and prompt improvement

app.py

@@ -16,6 +16,7 @@ DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 class BasicAgent:
     def __init__(self):
         print("BasicAgent initialized.")
+        self.graph = build_graph()
     def __call__(self, question: str) -> str:
         print(f"Agent received question (first 50 chars): {question[:50]}...")
         # fixed_answer = "This is a default answer."

system_prompt.txt

@@ -8,5 +8,7 @@ If you are asked for a string, don’t use articles, neither abbreviations (e.g.
 digits in plain text unless specified otherwise.
 If you are asked for a comma separated list, apply the above rules depending of whether the element
 to be put in the list is a number or a string, ensure there is exactly one space after each comma.
+If you believe you have enough context to answer the question without processing any additional file,
+if one exists, go ahead and do so.
 Your answer should only start with "FINAL ANSWER: ", then follows with the answer.