Retire SBOM Nexus production cutover

Assistant: codex
Assistant-Model: gpt-5.6-sol
Assistant-Session: 01a028f0-a42f-7582-89a8-ebaad7343834

docs/evidence/SBOM-WP-0002-T07-retirement-2026-08-22.md

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+# SBOM-WP-0002-T07 retirement decision
+
+Date: 2026-08-22
+
+Decision authority: repository owner, in-session direction: “retire it after
+you added an entry to hall-of-helix.”
+
+## Decision
+
+SBOM-WP-0002 and the extraction/cutover session are retired. SBOM Nexus remains
+the production authority. State Hub remains a compatibility façade with its
+read and write flags pointing to Nexus; Repo Manager remains a deprecated Nexus
+client; Activity Core remains the bounded scheduler.
+
+The scheduled Monday observation was explicitly waived by the retirement
+direction. It is not represented as completed evidence. Evidence that does
+exist is retained:
+
+- two full production catch-up fires;
+- three distinct repositories processed per fire;
+- six terminal `no-checkout` outcomes;
+- zero tasks spawned by either fire;
+- queue fairness advanced from 101 to 98 never-attempted repositories;
+- `daily-sbom-catchup` enabled and active;
+- `weekly-sbom-staleness` disabled and paused;
+- clean Activity Core verification: 409 passed, 1 conditional skip.
+
+## Retention
+
+Retain State Hub's 22 historical SBOM snapshots and the compatibility façade as
+read-only rollback evidence. No historical rows, snapshots, migrations,
+feature flags, or façade code are deleted by this decision. New authoritative
+SBOM reads and writes continue through Nexus.
+
+The remaining operational limitation is also retained honestly: the deployed
+Nexus pod cannot access workstation host checkout paths, so bounded automation
+records `no-checkout` until a controlled scan-input topology is designed. That
+future capability does not reopen this extraction workplan.
+
+## Hall record
+
+The completed session is recorded in Hall of Helix commit `9eb42a1`:
+
+- `entries/2026-08-22T19:35:15.000Z-codex-sbom-ledger-found-room.md`
+- `visuals/codex-20260822-sbom-ledger-found-room.png`