- Add Solana reference key support for send and receive — send path appends a reference public key as a read-only non-signer account on the transfer instruction via --reference CLI flag, enabling order-bound payments per strain-payment-method-solana convention
- Add reference key matching for sol receive --wait — extracts reference keys from on-chain transaction account lists and supports --reference as a match condition alongside --onchain-memo and --amount, enabling services to verify order-bound payments