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Explains when optimistic UI is worth it, when to wait for server confirmation, and how to recover from rejected mutations.
Explains stale edit detection, row versioning, conflict UI, refresh behavior, and safe update contracts.
Explains refetching, targeted invalidation, stale data, optimistic updates, server truth, and user feedback after mutations.
Explains frontend guards, backend idempotency, pending state, retries, and duplicate-safe mutation design.