Sets allow_new_repos true in the deployed configuration, so an authenticated request for a repository the bucket does not hold fetches it from upstream and stores it on the way past. This is what makes the registry useful as a drop-in HF_ENDPOINT for a consumer: helexa's neurons resolve eight catalogued models, none of which were in the bucket, and pre-seeding each one by hand before it can be served defeats the purpose of putting a mirror in front of the Hub at all. With the flag off the service answered exactly as designed -- "forbidden by policy: Qwen/Qwen3-1.7B is not already stored and policy.allow_new_repos is false" -- which is correct behaviour and the wrong deployment for this use. The trade is real and now stated where it will be read rather than buried: the bucket becomes bounded by auth rather than by policy, so every issued client token is a licence to store arbitrary upstream repositories. policy.allowlist is the middle setting that keeps on-demand mirroring while confining it to expected namespaces, and it stays empty here only because the consumer's catalogue is expected to grow. The agent notes previously asserted that the deployment relied on the flag being false; that claim would have been quietly wrong from this commit onward, so it is rewritten rather than left to mislead.