Fix agent temporal perception error by adding current real-world time to LLM prompt.

ForumEngine/llm_host.py

@@ -211,6 +211,13 @@ class ForumHost:
     def _call_qwen_api(self, system_prompt: str, user_prompt: str) -> Dict[str, Any]:
         """调用Qwen API"""
         try:
+            current_time = datetime.now().strftime("%Y年%m月%d日%H时%M分")
+            time_prefix = f"今天的实际时间是{current_time}"
+            if user_prompt:
+                user_prompt = f"{time_prefix}\n{user_prompt}"
+            else:
+                user_prompt = time_prefix
+                
             response = self.client.chat.completions.create(
                 model=self.model,
                 messages=[