fix(ui): sync tray menu order after drag-and-drop sorting (#179)

The drag-and-drop sorting feature introduced in PR #126 (9eb991d) was
updating the provider sort order in the backend and frontend, but failed
to update the tray menu to reflect the new order.

Changes:
- Add updateTrayMenu() call after successful sort order update
- Ensures tray menu items are immediately reordered to match the UI

This fixes the issue where dragging providers in the main window would
not update their order in the system tray menu.

Fixes: 9eb991d (feat(ui): add drag-and-drop sorting for provider list)

src/hooks/useDragSort.ts

@@ -74,6 +74,8 @@ export function useDragSort(providers: Record<string, Provider>, appId: AppId) {
         await queryClient.invalidateQueries({
           queryKey: ["providers", appId],
         });
+        // 更新托盘菜单以反映新的排序
+        await providersApi.updateTrayMenu();
         toast.success(
           t("provider.sortUpdated", {
             defaultValue: "排序已更新",