Pairs with pangolin-teardown.sh. For instances that were phone-home
registered with a CCP, this script removes the CCP-side Instance row
during teardown so the slug is freed for re-registration.
Without it, tearing down a CCP-registered instance leaves a stale
Instance row in CCP's DB. The next phone-home-registration with the
same slug hits the unique-constraint violation we saw in marcelle
testing.
Matching: by agentUrl (default from .env CCP_AGENT_URL), --slug, or
--instance-id. Dry-run by default; --yes to execute. CCP admin token
via --token or CCP_ADMIN_TOKEN env var.
Added to build-release.sh whitelist so release tarballs include it
alongside pangolin-teardown.sh and validate-env.sh.
Bunker Admin