better：优化自我认知信息

src/chat/focus_chat/info/self_info.py

@@ -37,4 +37,4 @@ class SelfInfo(InfoBase):
         Returns:
             str: 处理后的信息
         """
-        return self.get_self_info()
+        return self.get_self_info() or ""

src/chat/focus_chat/info/structured_info.py

@@ -67,3 +67,17 @@ class StructuredInfo:
             value: 要设置的属性值
         """
         self.data[key] = value
+    
+    def get_processed_info(self) -> str:
+        """获取处理后的信息
+
+        Returns:
+            str: 处理后的信息字符串
+        """
+        
+        info_str = ""
+        for key, value in self.data.items():
+            info_str += f"信息类型：{key}，信息内容：{value}\n"
+            
+            
+        return info_str