What probably matters to youSection of the release
What
The setting that decides whether background work runs in a separate worktree now reads CLAUDE_BG_ISOLATION from a captured copy of the environment rather than live process state. It still accepts worktree or none and otherwise falls back to the bgIsolation config value. A new comment documents how terminal recordings are addressed within a session folder.
Evidence
keys.recording(projectKey, sessionId, stamp)
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
