chore/ 删除无用文件

api/tests/test_conversation_messages_history.py

@@ -44,7 +44,10 @@ class ConversationMessagesHistoryTest(unittest.TestCase):
         )
 
         self.assertEqual(
-            [(msg["senderType"], msg["messageType"], msg["content"]) for msg in messages],
+            [
+                (msg["senderType"], msg["messageType"], msg["content"])
+                for msg in messages
+            ],
             [
                 ("user", "audio", "第一段"),
                 ("assistant", "text", "继续说"),
@@ -101,7 +104,9 @@ class ConversationMessagesHistoryTest(unittest.TestCase):
             }
         ]
 
-        latest_message_time = conversations_router._latest_message_time_ms(conversation, history)
+        latest_message_time = conversations_router._latest_message_time_ms(
+            conversation, history
+        )
 
         self.assertEqual(latest_message_time, 1773489605000)
 
@@ -112,6 +117,8 @@ class ConversationMessagesHistoryTest(unittest.TestCase):
             started_at=datetime(2026, 3, 14, 12, 0, 0, tzinfo=timezone.utc),
         )
 
-        timestamp = conversations_router._message_timestamp_ms({}, conversation.started_at)
+        timestamp = conversations_router._message_timestamp_ms(
+            {}, conversation.started_at
+        )
 
         self.assertEqual(timestamp, 1773489600000)