Development record

The brief at .abcd/development/brief/04-surfaces/01-ahoy.md:956 says 'The non-interactive flags pre-answer the prompts:' and lists approve-everything, adopt, marker target, oracle backend, deep scan, visibility, dev mode, the stale-binary override, the PATH directory and the attribution hook as the whole set. `abcd ahoy install --help` also registers --outbound, --readme-parts, --answers, --answered-in and --install-tool, each of which pre-answers a prompt.