pub fn finalize_batch_payment(
prepared: Vec<PreparedChunk>,
tx_hash_map: &HashMap<QuoteHash, TxHash>,
) -> Result<Vec<PaidChunk>>Expand description
Finalize a batch payment using externally-provided transaction hashes.
Takes prepared chunks and a map of quote_hash -> tx_hash from the
external signer. Builds per-chunk PaymentProof bytes without needing a wallet.