Macro-5 No-Production-Touch Promotion Firewall Check — R2-B2 (2026-06-19)

Date: 2026-06-19 · Workstream: R2-B2-MACRO-5-STAGING-BUILD-AUTHORIZATION-PACKAGE-2026-06-19 (Deliverable 70 of 110) · Editorial revision: rev1 Class: no-production-touch promotion firewall check · READ-ONLY · NON-ENACTING · NON-AUTHORIZING · NO write performed.

Metadata convention. Editorial revision (rev1) only. AgentData storage revision/content_length authoritative at read time.

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0. Status and non-authorization

STATUS: PASS — engineering / design-only. The check that the promotion firewall held (no staging→production flow). Engineering PASS ≠ authority PASS. Default: HOLD.

1. Purpose

Confirm no candidate crossed from staging into production, by construction and by proof.

2. Sources / evidence read

Macro-4 no-production-touch promotion firewall (D48); promotion-blocker candidate (31); build postflight no-promotion proof (55). Main process, no reader-agents.

3. Accepted baseline (carried)

Promotion is default-blocked; the only legitimate bridge is an explicit Owner-gated promotion (separate from a build).

4. Evidence / analysis — firewall check

Check	Must show
no candidate inspect_* → production birth_registry	confirmed (B4 never reads staging)
no candidate-derived certified=true	confirmed
no candidate-derived canonical/owner	confirmed
promotion-state = blocked on every candidate	confirmed
consumer isolation (B4 reads only production inspect_*)	by construction (Macro-4 boundary)

5. Candidate / requirement / gate / result

The firewall is load-bearing: B4's consumer isolation makes a staging experiment incapable of triggering a production certify. No promotion is possible here (no build/candidate). Obligation defined.

6. Owner-gated future work

Opening the promotion gate is a separate Owner act; forbidden now.

7. What remains unresolved

No build; no firewall proof exists.

8. Ready for GPT/Codex review

Yes — Codex should confirm the firewall is enforced by consumer isolation, not just policy.