R-88b closed (agent v0.105.0 + controller v0.178.0) — age_state gives 'unknown'
its own representation, with empty meaning legacy rather than unknown so the
first-backup valve keeps working on un-upgraded boxes.
R-97 note updated: hub v0.79.0 (R-97c) replaced a FALSE operator-only comment
with a real register — the comment claimed a guarantee the code did not provide.
Standing rule 4 (R-96): a recommendation that is not followed gets one line
saying why. Added to the live CLAUDE.md and this versioned copy — the live file
is not in a git repo, so committing to it alone would leave the rule as durable
as the chat it came from.
READY re-ranked: R-95 now leads.
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