Two onboarding-screen bugs:
- The final "notifications" step blocked click-off/Escape dismissal, unlike
every other step. Remove the notifications-only guard so the skip
confirmation opens on all steps; the footer "Skip to project setup" stays
hidden there since the primary button already hands off to Add Project.
- A skipped "integrations" step (GitHub CLI already installed) still rendered
as a dead, disabled stepper dot the user skipped past on Continue. The
stepper now drops all skipped steps (integrations + Windows terminal)
entirely instead of showing an unreachable dot.
Allowing dismissal on the last step let a click-off race the "Add your first
project" completion handoff (both call closeWith) and double-write onboarding
state / double-fire telemetry. Make closeWith idempotent with a first-wins
latch. Also map the displayed step index through resolveStepIndex so a
momentarily-skipped resume step can't flash "1 of N".
Verified: onboarding unit tests, full onboarding e2e spec (rewritten
notifications test locks in the new dismiss behavior), typecheck, lint, and
live Electron.
7efbe10394