seed.py populates the stack through the API: a read-only user with a
self-provisioned token, tenants, sites, clusters, a VRF, virtual
machines (one with a primary IP) and standalone addresses; the tests
run the real inventory script against every source/filter combination,
every error path and the ansible --list/--host protocol.
compose stack modelled on the production netbox deployment (same pinned
images, worker, healthchecks) minus traefik: the API is served straight
on localhost and nothing survives an e2e-down.
