When false, this container rejects all DnD drops. Default true.
Canonical record of this container's children and their order. The
store is the source of truth: every mutation that adds, removes, moves, or
reorders a child rewrites this array. Layout strategies, the React
useChildren hook, snapshot/hydrate, and DnD all read from here.
Today this is the only place child order lives. The declarative React
layer reconciles JSX sibling order into this array via
Store.setChildOrder(parentId, orderedIds); a future iteration may move
to an order-keyed model (e.g. sparse fractional keys) so that concurrent
reorder operations don't have to round-trip the full permutation. Until
then, treat this array as the single canonical ordering and prefer
setChildOrder / reorderInParent / moveNode over mutating it.
Optionalstate
When false, this container suppresses drag handles on all its children (in addition to per-child
slot.placement.locked). Default true.