You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
SessionsArea: what it touches
ImprovementsKind: in v2.1.247,
ImprovementsSection of the release
What
When you attach to a running session, the acknowledgement now includes the worker's Claude Code version. If it differs from your build, the client switches to a legacy keyboard mode instead of assuming both ends speak the current key sequences.
Details
Runs on every attach; there is no flag.
Evidence
legacyKitty
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
