Revert "feat：修改工具调用模式"

This reverts commit d00a28f9d3.

src/heart_flow/mai_state_manager.py

@@ -13,8 +13,8 @@ logger = get_logger("mai_state")
 # The line `enable_unlimited_hfc_chat = False` is setting a configuration parameter that controls
 # whether a specific debugging feature is enabled or not. When `enable_unlimited_hfc_chat` is set to
 # `False`, it means that the debugging feature for unlimited focused chatting is disabled.
-# enable_unlimited_hfc_chat = True  # 调试用：无限专注聊天
-enable_unlimited_hfc_chat = False
+enable_unlimited_hfc_chat = True  # 调试用：无限专注聊天
+# enable_unlimited_hfc_chat = False
 prevent_offline_state = True
 # 目前默认不启用OFFLINE状态