feat: enrich question insights classification

ai_knowledge_base_v2/apps/backend/tests/test_admin_pagination.py

@@ -126,6 +126,7 @@ def test_question_insights_clean_and_cluster_similar_user_questions():
                 ChatMessage(id=5, session_id=1, user_id=1, role="user", content="1、回放在哪里看？\n2、上课链接在哪", created_at=now + timedelta(minutes=3)),
             ]
         )
+        db.add(AiRequestLog(session_id=1, user_id=1, status="SUCCESS", prompt="用户问题：心光有哪些作业？", knowledge_hit=0))
         db.commit()
 
         response = question_insights(
@@ -147,3 +148,6 @@ def test_question_insights_clean_and_cluster_similar_user_questions():
         assert data["items"][0]["count"] == 2
         assert "心光" in data["items"][0]["title"]
         assert data["items"][0]["userCount"] == 2
+        assert data["items"][0]["category"] == "homework"
+        assert data["items"][0]["noHitCount"] == 1
+        assert data["items"][0]["needsKnowledgeFollowUp"] is True