Add unit tests for the profileRecency backfill and recent-profiles read
path that kill the language-mutation survivors: status-tip confirmation
(no tip, exact tip), exclusion of addresses without a profile, replies,
and polls, malformed addrPostHeight entries, missing optional stores,
seen/height defaulting, stale-record removal, and the height/seen/address
comparator tie-breakers. Tighten the indexer recency tests the same way
and assert the set-profile text and max-size boundary.
Refresh the mutate4javascript manifests and write the gherkin-mutator
acceptance mutation metadata for the changed features.
By architect.
Add indexer profileRecency index, recent-profile ordering, and backfill specs;
seed profileRecency in the recent-profile-identity fixture; mark the feature in
progress in the backlog.
By specifier.
Chris Troutner