Release-cycle review found two move-path issues:
- Remote moves were placed at index:0 (broadcastPageMoved hardcodes index:0),
so every observer rendered the moved node at the TOP of its new siblings
until refetch. Client moveTreeNode now places by fractional position
(treeModel.placeByPosition, mirroring addTreeNode/insertByPosition) and
applies the payload's pageData (title->name, icon, hasChildren) so receivers
keep the node correct.
- Moving a page under a restricted ancestor left a stale named node (title/
slugId/icon) in the trees of users who lost visibility. broadcastPageMoved
now derives one FRESH hasRestrictedAncestor decision and drives both paths
from it: when restricted, the move goes to authorized users only
(emitToAuthorizedUsers, not the space-cache-gated emitTreeEvent) and a
compensating deleteTreeNode goes to the unauthorized complement (same fresh
getUserIdsWithPageAccess set) — disjoint, no stale-cache window. Non-restricted
moves are unchanged (one moveTreeNode to the room).
Follow-up (noted): invalidateSpaceRestrictionCache is still unwired at
permission-mutation sites; the open-space fast path can lag up to the 30s TTL,
but the move/delete consistency above no longer depends on it.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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