feat: 收口通知原因语义与留痕校验

tests/test_audit.py

@@ -170,6 +170,25 @@ def test_create_notification_record_persists_task_completed_and_task_failed(db):
     assert failed.notify_reason == "task_failed"
 
 
+def test_create_notification_record_rejects_unsupported_notify_reason(db):
+    try:
+        create_notification_record(
+            batch_id="SUB-20260604-001",
+            conversation_id="conv-001",
+            product_name="产品A",
+            trigger_source="risk_report",
+            notify_reason="custom_reason",
+            owner_role="注册资料负责人",
+            feishu_user_id="ou_demo_1",
+            message_status="sent",
+            web_detail_url="https://example.com/detail/1",
+            receipt={"message_id": "msg-1"},
+        )
+        assert False, "expected ValueError"
+    except ValueError as exc:
+        assert "notify_reason" in str(exc)
+
+
 def test_audit_list_supports_batch_and_product_filters(client, db):
     create_audit_log(
         "document_review",