Minimal fixture policy
This directory reserves the deterministic, locally generated RPKI fixture
contract. It intentionally contains no live RIR archive, private TAL/TA, key,
customer data, or source-repository bytes. The M4 Docker smoke uses standard
TAL/TA files from fixtures/ and an explicit bind-mounted repository from the
native test fixture tree; that repository is not shipped in the image while
its redistribution and provenance are pending. M5 must add or approve the
smallest redistributable snapshot/delta fixture and record its generator,
hashes and license in fixtures/manifest.toml before using it as public
compatibility evidence.