Question as presented: "D-137 ruling 1 of 5 -- enforcement strength. This
decides whether the rule binds or merely advises, and it gates rulings 2-5."
Operator selection, exact: "Blocking in preflight".

Consequence: the credential check lands as a new Pn in scripts/preflight.sh
and HARD-FAILS on any expected-but-absent, undeclared, or per-DC-asymmetric
credential -- no deploy proceeds past a credential gap. Not adopted: the
PreToolUse guard (an agent is constrained at the deploy gate, not at write
time) and advisory-only, which is precisely the posture that failed -- the
phase-3 prose rule was advisory and never fired at either DC standup.

D-137 stays PROPOSED. Sub-rulings 2-5 (derivation, --remote scope, policy
home, identity fold-in) are OPEN and NOTHING is built until all five are
ruled, one exchange each per GA-R5.

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