feat：PFC重构，模块化拆分

src/plugins/PFC/reply_generator.py

@@ -1,24 +1,13 @@
 import datetime
-import asyncio
-from typing import List, Optional, Dict, Any, Tuple, Literal, Set
-from enum import Enum
+from typing import List, Optional, Dict, Tuple
 from src.common.logger import get_module_logger
-from ..chat.chat_stream import ChatStream
-from ..message.message_base import UserInfo, Seg
+from ..message.message_base import UserInfo
 from ..chat.message import Message
 from ..models.utils_model import LLM_request
 from ..config.config import global_config
-from src.plugins.chat.message import MessageSending
-from ..message.api import global_api
-from ..storage.storage import MessageStorage
 from .chat_observer import ChatObserver
 from .reply_checker import ReplyChecker
-from .pfc_utils import get_items_from_json
 from src.individuality.individuality import Individuality
-from .chat_states import NotificationHandler, Notification, NotificationType
-import time
-from dataclasses import dataclass, field
-from .conversation import Conversation
 
 logger = get_module_logger("reply_generator")