What Happened
- The PR adds persistent column reordering for `DataGrid` by introducing a `useColumnOrder` hook and an optional `storageKey` prop, so reordered columns are saved to `localStorage`, validated on restore, and reapplied after reloads while preserving current defaults when storage is unavailable.
- The PR adds persistent column reordering for `DataGrid` by introducing a `useColumnOrder` hook and an optional `storageKey` prop, so reordered columns are saved to `localStorage`, validated on restore, and reapplied after reloads while preserving current defaults when storage is unavailable.
- 1 evidence item attached for review.