fix: 自消息错误回环过滤

gateway/scripts/xmpp_bot.py

@@ -541,9 +541,11 @@ def on_group_message(msg):
     nickname = full_from.split("/")[1] if "/" in full_from else ""
     bot_nick = JID.split("@")[0]
 
-    # Self-message echo from MUC — let through to LLM with prefix
-    # so LLM can see @mentions and observer protocol applies.
+    # Self-message echo — skip error loops, let rest through
     if nickname == bot_nick:
+        if "模型无响应" in body or "命令循环次数超限" in body:
+            log(f"(self-msg error, skipped) {body[:60]}")
+            return
         log(f"(self-msg to LLM) {body[:80]}")
         body = f"(自言自语) {body}"