Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
Session StateArea: what it touches
Internal ChangesKind: in v2.1.228,
Internal ChangesSection of the release
What
The session object used to carry one field and now carries a dozen, including observers, fallback history, prompt suggestions, pending hints, plugin sync, tool progress throttling, stashed write permissions and the autonomous loop preamble. Each is inherited from the root session when a session forks.
Details
This is why hundreds of call sites in this area gained a session argument, including observer pairing, auto-mode classifier telemetry, marketplace and plugin cache invalidation, hook registration and transcript sharing.
These caches are no longer shared between sessions running in the same process.
Evidence
sessionRefsGate
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
