iter(g294): 数据表格支持列显隐面板

packages/skin/ui/src/csv.ts

@@ -20,16 +20,17 @@ export function downloadCsv(name: string, header: string[], rows: unknown[][]):
   URL.revokeObjectURL(url);
 }
 
-/*** 导出按钮：取筛选 + 排序后的全量行（不分页），列序与表头一致、单元格走 format ***/
+/*** 导出按钮：取筛选 + 排序后的全量行（不分页），列序与表头一致、单元格走 format；列可由读取器惰性给出，跟随列显隐 ***/
 export function exportButton<T>(
   table: { getAllRows(): RowModel<T>; getCellValue(row: T, key: string): unknown },
-  columns: TableColumn<T>[],
+  columns: TableColumn<T>[] | (() => TableColumn<T>[]),
   name: string,
 ): HTMLElement {
   const run = (): void => {
+    const cols = typeof columns === 'function' ? columns() : columns; // 点导出时才取列：隐藏列变化后导出跟着变
     const rows = table.getAllRows().rows;
-    const header = columns.map((c) => String(c.header ?? c.key));
-    const body = rows.map((row) => columns.map((c) => {
+    const header = cols.map((c) => String(c.header ?? c.key));
+    const body = rows.map((row) => cols.map((c) => {
       const raw = table.getCellValue(row, c.key);
       return c.format ? c.format(raw, row) : raw; // 与单元格显示同源，导出内容与看到的一致
     }));