iter(g259): 数据表格暴露每页条数候选

packages/skin/ui/src/dataTable.ts

@@ -47,7 +47,6 @@ export function dataTable<T extends { id: RowKey }>(props: DataTableProps<T>): H
   const selectedCount = computed(() => state().selection.length);
   // 加载态读取器：布尔直接读，信号则保持响应性（供 renderList 依赖收集）
   const busy = (): boolean => (typeof props.loading === 'function' ? props.loading() : props.loading === true);
-
   // —— 受控页码桥接：外部信号 ↔ 内核分页；外部越界先钳制，signal 等值写回不触发，双向同步收敛安全 ——
   if (props.page) {
     const pageSig = props.page;
@@ -192,6 +191,7 @@ export function dataTable<T extends { id: RowKey }>(props: DataTableProps<T>): H
       info,
       total: () => visible().total,
       loading: busy,
+      pageSizes: props.pageSizes,
       onPage: (page) => table.dispatch({ type: 'setPage', page }),
       onPageSize: (pageSize) => table.dispatch({ type: 'setPageSize', pageSize }),
     }),