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F1: clear the "Reindex now" spinner once the poll cap fires. Gate the reindexing part of the button's loading state on the active poll window (reindexDeadline !== null) so a run that outlives the 120s cap no longer leaves the button stuck-disabled with a stale `reindexing: true`; the admin can restart. F2: rewrite reindexWorkspace JSDoc to describe the EMBEDDABLE page set (text OR existing embeddings), matching getEmbeddablePageIds / countEmbeddablePages instead of the old "every non-deleted page". F3: extract the shared embeddable-content predicate into a private PageRepo.embeddablePredicate helper, called by both countEmbeddablePages and getEmbeddablePageIds, removing the verbatim duplication. Behavior is identical (lockstep int-spec stays green). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>