fix: 添加详细日志诊断工具调用消息格式

services/llm_service.py

@@ -550,6 +550,16 @@ class LLMService:
         }
         
         logger.info(f"工具结果返回LLM: url={url}, model={model}, 消息数={len(final_messages)}")
+        # 打印消息内容（调试）
+        for i, msg in enumerate(final_messages):
+            role = msg.get('role')
+            content_preview = str(msg.get('content', ''))[:100] if msg.get('content') else 'None'
+            if role == 'tool':
+                logger.info(f"消息[{i}] role={role}, tool_call_id={msg.get('tool_call_id')}, content长度={len(msg.get('content',''))}")
+            elif role == 'assistant' and msg.get('tool_calls'):
+                logger.info(f"消息[{i}] role={role}, tool_calls={len(msg['tool_calls'])}")
+            else:
+                logger.info(f"消息[{i}] role={role}, content={content_preview}...")
         
         try:
             async with httpx.AsyncClient(timeout=60.0) as client: