Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Session StateArea: what it touches
Internal ChangesKind: in v2.1.229,
Internal ChangesSection of the release
What
Session cost and usage counters, telemetry providers, auth state, prompt-cache-break state, skill health and dump-prompt state moved out of one shared mutable object into classes fetched per host through a WeakMap-backed container with an explicit reset. Several ad-hoc caches, including tool-search descriptions, fetched web URLs and agent definitions, are now class instances cleared through that container.
