refac

backend/open_webui/socket/main.py

@@ -491,6 +491,22 @@ async def channel_events(sid, data):
         Channels.update_member_last_read_at(data['channel_id'], user['id'])
 
 
+@sio.on('events:chat')
+async def chat_events(sid, data):
+    user = SESSION_POOL.get(sid)
+    if not user:
+        return
+
+    event_data = data.get('data', {})
+    event_type = event_data.get('type')
+
+    if event_type == 'last_read_at':
+        await asyncio.to_thread(
+            Chats.update_chat_last_read_at_by_id,
+            data['chat_id'], user['id']
+        )
+
+
 def normalize_document_id(document_id: str) -> str:
     """Canonicalize document IDs to prevent auth bypass via prefix variants.