Apply an accountant category intent to the same imported QuickBooks object

Existing Transactions category approval, requiring authenticated human accountant access, current scoped reviewKey and exact sourceObjectId. Internally uses the existing audited sparse-update outbox and original QuickBooks Id/SyncToken. The selected category stays pending until provider verification and canonical mirror refresh; no independent local reclassification or duplicate cash journal is created. Live verified connection, cutoff, approved noncash mapping, immutable money/bank/date headers and filing authority are revalidated. Uncertain work reconciles its original request rather than blindly creating another write. Service principals are forbidden.