Under the hood
Useful1 Signal2
Lots of shared process-wide state moved into per-instance holders; nothing changes for you.
What's wrong with this entry?
Anonymous. No account, no email.
What
MCP connection and cache maps, child-process tracking with its exit-time SIGTERM sweep, the transcript-recording hook, several path and homedir lookup caches, the plans-directory lookup and a text-width cache all moved from module-level globals into class instances reached through accessors, with ad-hoc reset() methods dropped in favour of releasing the holder. Nothing changes for users.
Evidence
killAll
Strings lifted out of the shipped bundle, so the claim above can be checked against them.