- Preserve contract call metadata (direction, label, method) when token
transfers merge with normal txs in fetchRecentTransactions
- Handle 'contract' direction in counterparty display for home and
address detail list views
- Add decoded calldata display to transaction detail view, fetching
raw input from Blockscout and using decodeCalldata from approval.js
- Show 'Unknown contract call' with raw hex for unrecognized calldata
- Export decodeCalldata from approval.js for reuse
