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xarmian
1eb1c9eda6
An item MOVED to another workspace — copied, then archived — can now say where it went. GET on a single item gains an optional `moved_to` block naming each destination in displayable terms (workspace slug + item ref + title + collection slug), so a consumer can render a link without a second call. No HTTP redirect, no resolver change. The ACL gate is the point. A destination is revealed only after the caller independently passes AuthorizeCrossWorkspaceRead (TASK-2358) with an ITEM scope on the destination item itself. Workspace-level access is not sufficient: a restricted member of the destination workspace, or a guest holding one unrelated item grant there, has a role in that workspace while having no right to the copied item's collection. A caller who fails that check sees NO hint a destination exists. The key is omitted entirely — not a null, not an empty array, not a boolean — so the response is byte-identical to an archived item with no move record at all. A structurally distinguishable response is itself the leak. Restore decision: the block is OMITTED for a non-archived source. Restoring a moved-out source leaves two live items with the same content in two workspaces, which is legitimate, but at that instant the source has not moved anywhere and the response must stop asserting that it did. Past-tense provenance is the back-pointer question and applies equally to plain copies, which this field must never claim as moves. Also honored: DR-2a (only archived_source rows feed the pointer; plain copies are back-pointer material only), per-destination filtering over the forward lookup's SET with no short-circuit on the first hit or first denial, newest-first ordering, a scan bound on the per-GET authorization cost, and deliberate isolation of the hand-rolled public share-link DTO — pinned by an explicit negative test that freezes its key set. Claude-Session: https://claude.ai/code/session_01E2fRi12n8rARczvdEa2LYT