feat: add CIP-20 transaction metadata to all tools#3
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For write tools (submit_transaction): inject CIP-20 metadata (label 674) directly into the unsigned transaction CBOR before signing, using CML to deserialize, attach metadata, update the auxiliary data hash, and re-serialize. For read tools (get_addresses, get_utxos, get_balances, get_adahandles, get_stake_delegation): add _metadata field with CIP-20 formatted message to all API responses. Resolves 3RD-388
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Summary
submit_transaction): Injects CIP-20 compliant metadata (label674) into the unsigned transaction CBOR before signing. Uses CML to deserialize the transaction, attach{ msg: ["[Cardano MCP] - Submit Transaction"] }metadata, update the auxiliary data hash in the body, and re-serialize.get_addresses,get_utxos,get_balances,get_adahandles,get_stake_delegation): Adds_metadatafield with CIP-20 formatted message to all API responses (e.g.{ "674": { "msg": ["[Cardano MCP] - Get Balance"] } }).CIP-20 Reference
https://cips.cardano.org/cip/CIP-20
Metadata Messages
submit_transaction[Cardano MCP] - Submit Transactionget_addresses[Cardano MCP] - Get Addressesget_utxos[Cardano MCP] - Get UTXOsget_balances[Cardano MCP] - Get Balanceget_adahandles[Cardano MCP] - Get ADAHandlesget_stake_delegation[Cardano MCP] - Get Stake InfoTest plan
npm run buildcompiles without errorssubmit_transactionand verify CIP-20 metadata (label 674) appears on-chain_metadatafield is present in the response