docs(release): install-from-tag statement and committed release runbook with layer ownership (#236 D4/D5) - #243
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…lease runbook README's install section now states that the immutable Git tag is the supported install path and GitHub release assets are convenience copies, not a supported source, per the D4 owner decision. The new docs/reference/release-runbook.md replaces the per-train session-log runbook with a durable procedure: each step's command, exit evidence, and rollback, plus a Layer ownership table assigning every release proof to exactly one gate layer (leg, integrated gate, release prep, hosted Check, publication, or periodic). Refs #236
chrisdpurcell
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September 1, 2026 20:42
This was referenced Sep 1, 2026
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Summary
Owner decision D4 (2026-09-01): the immutable Git tag is the supported install path; GitHub release assets are convenience copies. README says so and points at the new committed release runbook,
docs/reference/release-runbook.md, which replaces the per-train scratch runbooks: R0–R12 with command, observable, and rollback per step; a layer-ownership table placing each of the 16 proofs in exactly one layer (leg, integrated gate, release-prep delta, hosted Check on main, publication, periodic); and the wall-clock measurement method with a v5.29.0 row to fill.Governing work
Supporting: #236
Acceptance coverage
Verification
technical-writer validate (0 errors), prettier + markdownlint over the three files,
sync-payload-projection --check,project-standards validateon the wheel runtime (42 files) — all exit 0; every relative link resolved.