Phones now render the overview from the dedicated `overviewMobile` ordering
instead of deriving a 1-column view from the desktop grid — the two layouts are
fully disjoint, so reordering on a phone never touches grid coords and vice
versa.
- View mode reuses DashboardGrid (drag disabled, cols=1), stacking each widget
at its catalogue height via a pure prefix-sum, so cards keep their cell
sizing. Per-widget config is shared with the desktop blocks.
- Edit mode surfaces a motion `Reorder` drag-sort panel (grip + show/hide eye +
config gear for configurable widgets) — no 2D drag on mobile, per plan.
- The 编辑布局 toggle now appears on mobile too, with a mobile-specific hint.
Order/visibility reconciles against the live widget catalogue, so a widget
added later just appears on phones as well.
DrSmoothl
754621de04