Macro-5 Build Postflight Master Checklist — R2-B2 (2026-06-19)

Date: 2026-06-19 · Workstream: R2-B2-MACRO-5-STAGING-BUILD-AUTHORIZATION-PACKAGE-2026-06-19 (Deliverable 51 of 110) · Editorial revision: rev1 Class: build postflight master checklist · 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 master list of proof a future build must capture after it completes. Engineering PASS ≠ authority PASS. Default: HOLD.

1. Purpose

Answer macro question 4 (postflight half) — what proof is required after a future build?

2. Sources / evidence read

Macro-4 no-production-touch before/after snapshot (D44); delete-fast evidence requirements (D39, DFE-1…5); preflight checklist (41). Main process, no reader-agents.

3. Accepted baseline (carried)

A build is accepted only if, after it, production is provably unchanged and the staging surface is delete-fast-ready.

4. Evidence / analysis — postflight checklist (PT)

#	Postflight check	Deliverable
PT-1	production counts unchanged vs preflight	52
PT-2	source unchanged	53
PT-3	staging exists only if authorized	54
PT-4	no promotion occurred	55
PT-5	delete-fast readiness proven	56
PT-6	fail-closed behavior proven	57
PT-7	final pass/fail computed	58

5. Candidate / requirement / gate / result

All seven are obligations; none is run here (no build occurred). The checklist is the shape of a future proof; any unmet check after a build = the build is rejected and rolled back.

6. Owner-gated future work

Running the postflight is part of a build; Owner-gated; forbidden now.

7. What remains unresolved

No build has occurred; the postflight is undefined-until-build.

8. Ready for GPT/Codex review

Yes — Codex should confirm the checklist is an obligation set, not an executed proof.