chore: add max_retries=5 for 4o-mini Aggregate tool

tools.py

@@ -145,7 +145,7 @@ def aggregate_information(query: str, results: list[str]) -> str:
     # Convert to LangChain Document objects
     docs = [Document(page_content=chunk) for chunk in results]
 
-    llm = ChatOpenAI(model="gpt-4o-mini", temperature=0)
+    llm = ChatOpenAI(model="gpt-4o-mini", temperature=0, max_retries=5)
 
     # 🔍 Map Prompt — Summarize each document in light of the query
     map_prompt = PromptTemplate.from_template(