PCF7: Ministral Publication Confirmation Successor

Status: prospectively frozen on 2026-08-11 before PCF7 admission or compute.

PCF1 through PCF6 remain closed with formal scientific result null. PCF6's no-model H100 environment canary removed SLURM_EXPORT_ENV as intended, then the actual-variable scan stopped on Bash's _ variable. For an external command Bash exports _ as the invoked executable path; here it was exactly the already-pinned Python entrypoint. The canary stopped before nvidia-smi, CUDA, model access, output publication, or scientific graph submission. Preserve SHOHIN_PCF6_TERMINAL_INFRASTRUCTURE_RECEIPT_20260811.json.

PCF7 is the separately named, prospectively declared infrastructure successor authorized by the user's standing direction to continue fixing pre-science blockers. It inherits every scientific and security clause of PCF1 through PCF6. The host, model, source bytes, split, prompts, arms, seeds, training geometry, candidate policy, thresholds, assessor custody, and terminal gate remain unchanged.

Its sole repair is one exact control-plane alias: _ may contain a protected term only when both its name is _ and its complete value equals the same hash-pinned Python entrypoint already admitted for PYTHON. Every other _ value fails. SLURM_EXPORT_ENV remains removed, and every other actual name and value remains subject to the unchanged protected-term scan.

Run one fresh no-model H100 environment canary. It must prove export metadata present before and absent after filtering, the exact actual environment accepted, an eligible H100 allocation, and zero model/scientific access. If it passes, preserve its receipt, replay the full live preflight, and submit one PCF7 graph. Disable requeue, retries, and automatic successors. Any infrastructure failure, formal PASS, or formal FAIL ends PCF7. Do not change or open an alternate host, data split, prompt, arm, seed, threshold, or protected board.