teardown-stage2.sh stops every Stage 2 run (daemon + docs + sandbox), kills any
orphaned sandbox dev server on :4311 the onboarding-tester left behind, and stops
the regtest BTCPay docker stack + volumes (--keep-btcpay to leave it up). README
documents it as the always-run cleanup step, and adds a harvest note: on a clean
run, check whether the existing public docs already cover the success story before
adding anything.
Disposable rig that runs the onboarding-tester agent docs-only against the
buyer-pays journey: a sandbox daemon wired to a Dockerized BTCPay regtest stack,
a scoped key with payment_providers:write, and a regtest buyer-pay helper.
Includes the de-risk probe + findings and an end-to-end gate check
(validate-gate.sh, 10/10). The doc-onboarding loop converged completed-clean;
see stage2/STAGE2-RESULT.md. Scratch (.live-env, probe-out/) is gitignored.