refactor: 优化异步调用和权限系统架构

- 移除bot.py中不必要的asyncio.to_thread包装
- 将权限API的is_master方法改为异步调用
- 删除不再使用的SQLAlchemyTransaction类

bot.py

@@ -289,7 +289,7 @@ class DatabaseManager:
             start_time = time.time()
 
             # 使用线程执行器运行潜在的阻塞操作
-            await asyncio.to_thread(initialize_sql_database, global_config.database)
+            await initialize_sql_database( global_config.database)
             elapsed_time = time.time() - start_time
             logger.info(
                 f"数据库连接初始化成功，使用 {global_config.database.database_type} 数据库，耗时: {elapsed_time:.2f}秒"

src/common/database/database.py

@@ -48,35 +48,6 @@ class DatabaseProxy:
         return result
 
 
-class SQLAlchemyTransaction:
-    """SQLAlchemy 异步事务上下文管理器 (兼容旧代码示例，推荐直接使用 get_db_session)。"""
-
-    def __init__(self):
-        self._ctx = None
-        self.session = None
-
-    async def __aenter__(self):
-        # get_db_session 是一个 async contextmanager
-        self._ctx = get_db_session()
-        self.session = await self._ctx.__aenter__()
-        return self.session
-
-    async def __aexit__(self, exc_type, exc_val, exc_tb):
-        try:
-            if self.session:
-                if exc_type is None:
-                    try:
-                        await self.session.commit()
-                    except Exception:
-                        await self.session.rollback()
-                        raise
-                else:
-                    await self.session.rollback()
-        finally:
-            if self._ctx:
-                await self._ctx.__aexit__(exc_type, exc_val, exc_tb)
-
-
 # 创建全局数据库代理实例
 db = DatabaseProxy()
 

src/plugin_system/apis/permission_api.py

@@ -36,7 +36,7 @@ class IPermissionManager(ABC):
     async def check_permission(self, user: UserInfo, permission_node: str) -> bool: ...
 
     @abstractmethod
-    def is_master(self, user: UserInfo) -> bool: ...  # 同步快速判断
+    async def is_master(self, user: UserInfo) -> bool: ...  # 同步快速判断
 
     @abstractmethod
     async def register_permission_node(self, node: PermissionNode) -> bool: ...
@@ -82,9 +82,9 @@ class PermissionAPI:
         self._ensure_manager()
         return await self._permission_manager.check_permission(UserInfo(platform, user_id), permission_node)
 
-    def is_master(self, platform: str, user_id: str) -> bool:
+    async def is_master(self, platform: str, user_id: str) -> bool:
         self._ensure_manager()
-        return self._permission_manager.is_master(UserInfo(platform, user_id))
+        return await self._permission_manager.is_master(UserInfo(platform, user_id))
 
     async def register_permission_node(
         self,

src/plugins/built_in/permission_management/plugin.py

@@ -231,7 +231,7 @@ class PermissionCommand(PlusCommand):
             target_user_id = chat_stream.user_info.user_id
 
         # 检查是否为Master用户
-        is_master = permission_api.is_master(chat_stream.platform, target_user_id)
+        is_master = await permission_api.is_master(chat_stream.platform, target_user_id)
 
         # 获取用户权限
         permissions = await permission_api.get_user_permissions(chat_stream.platform, target_user_id)