Under the hoodTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Session StateArea: what it touches
Internal ChangesKind: in v2.1.228,
Internal ChangesSection of the release
What
State that used to live once per process now lives on the session and is inherited by forked sessions, so a child session no longer shares or overwrites its parent's. This covers observer pairings, the autonomous-loop preamble latch, compaction precompute, the worktree resume refusal, memory sync notices, command history, known Slack channels, and path and directory scan caches.
Details
Forks read the parent's values through their root session rather than starting empty.
Post-compaction cleanup and the observer arm and retire helpers now take the session as an argument.
Evidence
autonomousLoopPreamble
Strings lifted out of the shipped bundle, so the claim above can be checked against them.