Merge the sequence's computed set into the store's active list,
touching ONLY the ids the sequence owns: every foreign active id keeps
its place, every owned id is dropped and then re-added exactly as
target says. Exported for tests and for hosts that drive the store
from a non-React loop; the hook applies this on each index change.
Merge the sequence's computed set into the store's active list, touching ONLY the ids the sequence owns: every foreign active id keeps its place, every owned id is dropped and then re-added exactly as
targetsays. Exported for tests and for hosts that drive the store from a non-React loop; the hook applies this on each index change.