feat(ui): 主调度台添加仅一次电源任务，UI样式优化

app/ui/setting.py

@@ -103,6 +103,8 @@ class Setting(QWidget):
 
         scrollArea = ScrollArea()
         scrollArea.setWidgetResizable(True)
+        scrollArea.setContentsMargins(0, 0, 0, 0)
+        scrollArea.setStyleSheet("background: transparent; border: none;")
         scrollArea.setWidget(content_widget)
         layout = QVBoxLayout()
         layout.addWidget(scrollArea)