NandyAI

export function classify(  txn: CanonicalTransaction,  residents: ResidentIdentifiers[],): MatchOutcome {  const desc = normalize(txn.description);  const descAlnum = alnum(txn.description);   // Deterministic ordering: residents by id, each resident's flats by flatId.  const ordered = [...residents]    .sort((a, b) => (a.residentId < b.residentId ? -1 : a.residentId > b.residentId ? 1 : 0))    .map((r) => ({      ...r,      flats: [...r.flats].sort((a, b) => (a.flatId < b.flatId ? -1 : a.flatId > b.flatId ? 1 : 0)),    }));   // Build (resident, flat) candidate pairs from MATCHING identifiers.  const pairs: MatchCandidate[] = [];