fix(preprocessMessages): clarify web search context in final message content

src/lib/server/endpoints/preprocessMessages.ts

@@ -34,7 +34,7 @@ function addWebSearchContext(messages: Message[], webSearch: Message["webSearch"
 
 	const finalMessage = {
 		...messages[messages.length - 1],
-		content: `I searched the web using the query: ${webSearch.searchQuery}.
+		content: `I searched the web using the query: ${webSearch.searchQuery}. The query was generated by a tool and might not be relevant to the question.
 Today is ${currentDate} and here are the results.
 When answering the question, you must reference the sources you used inline by wrapping the index in brackets like this: [1]. If multiple sources are used, you must reference each one of them without commas like this: [1][2][3].
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