fix(security): apply ACL checks to QQBot guild messages and guild DMs to prevent allowlist bypass

gateway/platforms/qqbot/adapter.py

@@ -976,6 +976,18 @@ class QQAdapter(BasePlatformAdapter):
         if not channel_id:
             return
 
+        # Apply group_policy ACL — guild channels are group-like contexts.
+        # Without this check any member of any guild the bot is in could
+        # bypass the configured allowlist.
+        guild_id = str(d.get("guild_id", ""))
+        author_id = str(author.get("id", ""))
+        if not self._is_group_allowed(guild_id or channel_id, author_id):
+            logger.debug(
+                "[%s] Guild message blocked by ACL: channel=%s user=%s",
+                self._log_tag, channel_id, author_id,
+            )
+            return
+
         member = d.get("member") if isinstance(d.get("member"), dict) else {}
         nick = str(member.get("nick", "")) or str(author.get("username", ""))
 
@@ -1032,6 +1044,17 @@ class QQAdapter(BasePlatformAdapter):
         if not guild_id:
             return
 
+        # Apply dm_policy ACL — guild DMs were previously unauthenticated.
+        # Without this check any member of any guild the bot is in could
+        # bypass the configured allowlist via direct messages.
+        author_id = str(author.get("id", ""))
+        if not self._is_dm_allowed(author_id):
+            logger.debug(
+                "[%s] Guild DM blocked by ACL: guild=%s user=%s",
+                self._log_tag, guild_id, author_id,
+            )
+            return
+
         text = content
         att_result = await self._process_attachments(d.get("attachments"))
         image_urls = att_result["image_urls"]