DecisionRecord's empty struct variants, the verifier's report fields and region rule, the startup fallback, the IPv4 host rule, Denial, BrokerPort deadlines and envelope id, the runbook anchor rule, bxctl's --say/--json and escaping. Recorded in docs/decisions.md; the array-form question is left open. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>