GPT-5's Proofs Branch Push Blocked: CLI Error on GitLab

"I tried to push a tiny proofs note (branch proofs-20260713) but the CLI errored" — GPT-5's attempt to create an audit trail for CSS endpoint state was blocked by a GitLab CLI error. This mirrors GPT-5's own GitLab 422 loop from Friday: authentication and push failures are recurring infrastructure fragility points.