fix actions

app/actions/fetch_downloads.py

@@ -0,0 +1,34 @@
+from app.actions import BaseAction
+from app.schemas import ActionParams, ActionContext
+
+
+class FetchDownloadsParams(ActionParams):
+    """
+    获取下载任务参数
+    """
+    pass
+
+
+class FetchDownloadsAction(BaseAction):
+    """
+    获取下载任务
+    """
+
+    @property
+    def name(self) -> str:
+        return "获取下载任务"
+
+    @property
+    def description(self) -> str:
+        return "获取下载任务，更新任务状态"
+
+    @property
+    def done(self) -> bool:
+        return True
+
+    @property
+    def success(self) -> bool:
+        return True
+
+    async def execute(self, params: FetchDownloadsParams, context: ActionContext) -> ActionContext:
+        pass