v1.0.18
CLI + Studio release.
- 0855: Fix SSE notifications — token-gate exemption for the EventSource stream path (toasts fire again; security property preserved).
- 0856: Add Claude Opus 4.8 as the new opus/best default model.
- 0857: Deterministic stub provider + shared
npm run verifyregression harness (create -> install -> run-with-non-default-model) with a loud-skip gate.
Reconciles npm drift (1.0.16 -> 1.0.18).