fc8a40cfc6
Review fixes on top of cb2b104:
- Delete the write-only in-memory refuseUntil map and setRefusalBackoff now
that status.go is gone: the pass gate reads the durable stamp, so the map
was half-deleted dead state (spec review C-1).
- An outcome-query failure no longer blanks the Lane table into the false
'no data yet': rows render with 'none observed' chips instead (I-1).
- due-query and eligible-count skips get their own sentences instead of the
merged 'check failed' (I-2).
- ADR-0012 constrain wording corrected and trailing newline added (M-1)