Question as presented: "D-137 ruling 2 of 5 -- derivation ... How do the
matrix and the manifests relate?" Operator selection, exact: "Derive
manifests from matrix (Recommended)".

Matrix becomes SINGLE SOURCE; --render regenerates creds-manifests/*.manifest
and the gauntlet fails on rendered-vs-checked-in drift. Kills the dual
maintenance the committee flagged as the GA-F06 staleness risk.

Accepted cost recorded at ruling time: manifests become generated artifacts,
so their governance prose (SEC linkage, mint dates, off-manifest carve-outs,
un-consolidated findings) must become matrix FIELDS or be regenerated into the
rendered header -- not silently dropped. That prose is load-bearing: it is what
recorded the dc0 edge-keypair backfill debt.

D-137 stays PROPOSED; sub-rulings 3-5 OPEN; nothing built until all five.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HvCyrwvYTTcDYnRErfMsNf