Budgeted. Journaled. Asks before paying.

cd agents/cairn-buyer
cargo run -- hire "A logo for my bakery, two milestones, $300, freelancer lina@example.com"
cargo run -- settle <contract_id>

curl -s http://187.126.26.84:8790/api/mcp -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'