Set expiry by claim: a historical explanation may use an old revision. A queued action needs current permission and state checks.
RAG freshness worksheet: hackmd.io/@dmytro-nasy...
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Hypothetical: a policy is verified at 08:59. A superseding revision is announced at 09:02. At 09:03, the old evidence is only four minutes old, yet it cannot support current instructions.
A five-minute expiry must not overrule a known change.
