Fix discuss channel auto-forward deletion

Skip moderation for automatic forwards / channel sender messages in linked discussion groups.

Made-with: Cursor

bot/handlers.py

@@ -252,6 +252,13 @@ async def anti_spam_all_messages(message: Message, bot: Bot, cfg: Config, db: Da
     if not _is_allowed_chat(cfg, chat_id):
         return
 
+    # Discussion groups can receive automatic forwards from a linked channel.
+    # These messages are not user spam and must never be deleted.
+    if getattr(message, "is_automatic_forward", False):
+        return
+    if message.sender_chat is not None and getattr(message.sender_chat, "type", None) == "channel":
+        return
+
     user = message.from_user
     if user is None or user.is_bot:
         return