Astra's review: a copied image whose content never reaches the server
kept its row, and so its bytes, for good. A day after each copy, the copy
now goes through the reclaim check, which removes it only if nothing
shows it. A failed upload under the copy's id no longer reads as one
still on its way: the copy replaces it. Tests cover both, and a viewer
collaborator being refused.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>