重构工作流相关API，支持异步操作并引入异步数据库管理

app/db/workflow_oper.py

@@ -1,6 +1,6 @@
-from typing import List, Tuple, Optional
+from typing import List, Tuple, Optional, Any, Coroutine, Sequence
 
-from app.db import DbOper
+from app.db import DbOper, AsyncDbOper
 from app.db.models.workflow import Workflow
 
 
@@ -84,3 +84,27 @@ class WorkflowOper(DbOper):
         重置
         """
         return Workflow.reset(self._db, wid, reset_count=reset_count)
+
+
+class AsyncWorkflowOper(AsyncDbOper):
+    """
+    异步工作流管理
+    """
+
+    async def get(self, wid: int) -> Workflow:
+        """
+        异步查询单个工作流
+        """
+        return await Workflow.async_get(self._db, wid)
+
+    async def list(self) -> Coroutine[Any, Any, Sequence[Any]]:
+        """
+        异步获取所有工作流列表
+        """
+        return await Workflow.async_list(self._db)
+
+    async def get_by_name(self, name: str) -> Workflow:
+        """
+        异步按名称获取工作流
+        """
+        return await Workflow.async_get_by_name(self._db, name)