feat(examples): MediaBuy.invoice_recipient first-class column (3.1 readiness)#395

bokelley wants to merge 2 commits intomainadcontextprotocol/adcp-client-python:mainfrom

claude/issue-378-mediabuy-invoice-recipientadcontextprotocol/adcp-client-python:claude/issue-378-mediabuy-invoice-recipientCopy head branch name to clipboard