A signature grants the reach of the steward who gives it: only a person signs, no agent reaches a key, nobody widens their own mandate, and what lies in another steward's surface is asked of that steward
ADR-066 says WHO signs — a person, out of band, against a public key kept as data — and ADR-063
The operations catalog is FROZEN as a destination — no new operation is authored there — and its retirement is bound to a Rust reconciliation that has not happened
ADR-024 built the operations layer, ADR-026 gave it three validation planes, ADR-030 and ADR-034
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