perf(methods): 通过移除不必要的 self 参数优化方法签名

在包括 chat、plugin_system、schedule 和 mais4u 在内的多个模块中，消除冗余的实例引用。此次改动将无需访问实例状态的实用函数转换为静态方法，从而提升了内存效率，并使方法依赖关系更加清晰。

src/common/database/database.py

@@ -25,7 +25,8 @@ class DatabaseProxy:
         self._engine = None
         self._session = None
 
-    def initialize(self, *args, **kwargs):
+    @staticmethod
+    def initialize(*args, **kwargs):
         """初始化数据库连接"""
         return initialize_database_compat()
 

src/common/database/sqlalchemy_database_api.py

@@ -4,16 +4,14 @@
 支持自动重连、连接池管理和更好的错误处理
 """
 
-import traceback
 import time
-import asyncio
-from typing import Dict, List, Any, Union, Type, Optional
-from sqlalchemy.exc import SQLAlchemyError
+import traceback
+from typing import Dict, List, Any, Union, Optional
+
 from sqlalchemy import desc, asc, func, and_, select
-from sqlalchemy.ext.asyncio import AsyncSession
-from src.common.logger import get_logger
+from sqlalchemy.exc import SQLAlchemyError
+
 from src.common.database.sqlalchemy_models import (
-    Base,
     get_db_session,
     Messages,
     ActionRecords,
@@ -33,6 +31,7 @@ from src.common.database.sqlalchemy_models import (
     MaiZoneScheduleStatus,
     CacheEntries,
 )
+from src.common.logger import get_logger
 
 logger = get_logger("sqlalchemy_database_api")
 

src/common/database/sqlalchemy_models.py

@@ -3,17 +3,18 @@
 替换Peewee ORM，使用SQLAlchemy提供更好的连接池管理和错误恢复能力
 """
 
-from sqlalchemy import Column, String, Float, Integer, Boolean, Text, Index, DateTime
-from sqlalchemy.ext.declarative import declarative_base
-from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession, async_sessionmaker
-from sqlalchemy.orm import Mapped, mapped_column
-import os
 import datetime
+import os
 import time
-from typing import Iterator, Optional, Any, Dict, AsyncGenerator
-from src.common.logger import get_logger
 from contextlib import asynccontextmanager
-import asyncio
+from typing import Optional, Any, Dict, AsyncGenerator
+
+from sqlalchemy import Column, String, Float, Integer, Boolean, Text, Index, DateTime
+from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession, async_sessionmaker
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import Mapped, mapped_column
+
+from src.common.logger import get_logger
 
 logger = get_logger("sqlalchemy_models")