fix：调整目录结构，优化hfc prompt，移除日程，移除动态和llm判断willing模式，

src/chat/focus_chat/hfc_utils.py

@@ -0,0 +1,64 @@
+import time
+import traceback
+from typing import Optional
+from src.chat.message_receive.message import MessageRecv, BaseMessageInfo
+from src.chat.message_receive.chat_stream import ChatStream
+from src.chat.message_receive.message import UserInfo
+from src.common.logger_manager import get_logger
+import json
+
+logger = get_logger(__name__)
+
+
+async def _create_empty_anchor_message(
+    platform: str, group_info: dict, chat_stream: ChatStream
+) -> Optional[MessageRecv]:
+    """
+    重构观察到的最后一条消息作为回复的锚点，
+    如果重构失败或观察为空，则创建一个占位符。
+    """
+
+    try:
+        placeholder_id = f"mid_pf_{int(time.time() * 1000)}"
+        placeholder_user = UserInfo(user_id="system_trigger", user_nickname="System Trigger", platform=platform)
+        placeholder_msg_info = BaseMessageInfo(
+            message_id=placeholder_id,
+            platform=platform,
+            group_info=group_info,
+            user_info=placeholder_user,
+            time=time.time(),
+        )
+        placeholder_msg_dict = {
+            "message_info": placeholder_msg_info.to_dict(),
+            "processed_plain_text": "[System Trigger Context]",
+            "raw_message": "",
+            "time": placeholder_msg_info.time,
+        }
+        anchor_message = MessageRecv(placeholder_msg_dict)
+        anchor_message.update_chat_stream(chat_stream)
+        logger.debug(f"创建占位符锚点消息: ID={anchor_message.message_info.message_id}")
+        return anchor_message
+
+    except Exception as e:
+        logger.error(f"Error getting/creating anchor message: {e}")
+        logger.error(traceback.format_exc())
+        return None
+
+
+def get_keywords_from_json(json_str: str) -> list[str]:
+    # 提取JSON内容
+    start = json_str.find("{")
+    end = json_str.rfind("}") + 1
+    if start == -1 or end == 0:
+        logger.error("未找到有效的JSON内容")
+        return []
+
+    json_content = json_str[start:end]
+
+    # 解析JSON
+    try:
+        json_data = json.loads(json_content)
+        return json_data.get("keywords", [])
+    except json.JSONDecodeError as e:
+        logger.error(f"JSON解析失败: {e}")
+        return []