修改消息逻辑

wechat-bot/bot/agent_client.py

@@ -120,6 +120,7 @@ async def call_agent_stream(
             stream_id = generate_req_id("stream")
             full_text = ""
             has_sent_final = False
+            has_sent_thinking = False
 
             async for line in response.aiter_lines():
                 if not line.startswith("data: "):
@@ -148,12 +149,13 @@ async def call_agent_stream(
                         continue
                     full_text += text
 
-                # 实时推送"正在思考"状态
-                if full_text and not has_sent_final:
+                # 只发送一次"正在思考"状态
+                if full_text and not has_sent_thinking and not has_sent_final:
                     try:
                         await ws_client.reply_stream(
                             frame, stream_id, "💭 正在思考...", False
                         )
+                        has_sent_thinking = True
                     except Exception:
                         pass