Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
Session StateArea: what it touches
Internal ChangesKind: in v2.1.227,
Internal ChangesSection of the release
What
A large sweep moves file-level variables, maps and sets onto singleton objects reached through accessors, covering skills and commands, team context, MCP monitor sockets, swarm permissions, ingress tokens and the lazy-value helper. Nothing changes for users, but per-process and per-session state can now be reset in one go.
Evidence
bundledSkillSessionResetHooks
Strings lifted out of the shipped bundle, so the claim above can be checked against them.