feat：normal可以一种简洁的方式切换到focus

src/chat/heart_flow/heartflow.py

@@ -1,5 +1,5 @@
 import traceback
-from src.chat.heart_flow.sub_heartflow import SubHeartflow, ChatState
+from src.chat.heart_flow.sub_heartflow import SubHeartflow
 from src.common.logger import get_logger
 from typing import Any, Optional
 from typing import Dict
@@ -39,20 +39,5 @@ class Heartflow:
             traceback.print_exc()
             return None
 
-    async def force_change_subheartflow_status(self, subheartflow_id: str, status: ChatState) -> None:
-        """强制改变子心流的状态"""
-        # 这里的 message 是可选的，可能是一个消息对象，也可能是其他类型的数据
-        return await self.force_change_state(subheartflow_id, status)
-
-    async def force_change_state(self, subflow_id: Any, target_state: ChatState) -> bool:
-        """强制改变指定子心流的状态"""
-        subflow = self.subheartflows.get(subflow_id)
-        if not subflow:
-            logger.warning(f"[强制状态转换]尝试转换不存在的子心流{subflow_id} 到 {target_state.value}")
-            return False
-        await subflow.change_chat_state(target_state)
-        logger.info(f"[强制状态转换]子心流 {subflow_id} 已转换到 {target_state.value}")
-        return True
-
 
 heartflow = Heartflow()