fix(board): persist setup checklist dismissal (#6992)

apps/docs/docs/management/boards/index.mdx

@@ -66,6 +66,9 @@ with enabled sidebars shown beside the main canvas.
 Enter edit mode from the board header to add, move, resize, configure, or remove content. Save the board to persist the
 layout.
 
+Dismissing the setup checklist is remembered per board in the current browser, independently of board contents.
+Clearing browser site data restores it; dismissal does not sync across browsers.
+
 - Drag from an item's inactive content area; Containers use their grip.
 - Hold `Ctrl` on Windows/Linux or `Cmd` on macOS to select several items.
 - Use **Move / resize item** for another canvas, rail, Container, or exact coordinates.