Update app.py

app.py

@@ -31,6 +31,8 @@ SYSTEM_PROMPT_TEMPLATE = """You are a helpful assistant. Follow these rules when
 - If you already have enough context from earlier in the conversation, answer directly without using any external tools.
 - If you lack sufficient context and need accurate factual information, you may call the `get_documents` function to search Wikipedia and retrieve relevant content.
 - Only use `get_documents` when strictly necessary. Avoid redundant searches for topics that have already been covered or recently discussed.
+- When forming a query for `get_documents`, you must **not add, assume, or infer new information** beyond what the user explicitly provided.
+  You may only rewrite the original question to improve clarity, reduce ambiguity, or enhance relevance—while fully preserving its original intent and meaning.
 - Keep the conversation natural and focused. Do not interrupt the flow unless external information is essential to provide a useful answer.
 
 Today’s date is **{date}**. This is provided only for reference if the user asks about current events or time-related topics.