Test: Checking conv3_classification.json...
ERROR: need_reply should be true for conv3, got: False
Reason given: The user (Mathieu, contact 4) sent the last substantive message providing a URL response to contact 70 (Nik). Contact 70 then asked follow-up questions about how to use the evaluation site, but these appear to be general questions about the tool rather than directed specifically at the user. The conversation flow suggests contact 70 is exploring the tool independently.