You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
AgentsArea: what it touches
ImprovementsKind: in v2.1.239,
ImprovementsSection of the release
What
Agents that have never been used since last-used tracking was added no longer sort as if they were brand new. A backfill pass walks existing sessions and, for any agent with no recorded last-used time, adopts that session's creation time. The default agent is skipped.
Evidence
agentLastUsed
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
