Bring up the single-node harness:
just up-singleThis command uses tools/compose/single-node.yml.
To validate Extravaganza from the assembled single-node workspace without moving product ownership into StackLab, run the external acceptance task:
mix stack_lab.extravaganza.external_acceptanceThe task shells out to mix extravaganza.headless.smoke --deterministic --same-run --json in the Extravaganza repo, validates the returned public
receipt refs, and writes a StackLab receipt under tmp/. Provider smoke remains
separate and provider-only.