The vitest process hung after all 2132 story tests passed because
leftover refetchInterval polls kept the Node.js event loop alive.
Components that set per-query refetchInterval override the
QueryClient default, causing HTTP requests through vite's proxy
to localhost:3000 (no backend) that never resolve cleanly.
Three fixes:
- preview.tsx: disable all automatic refetching defaults and cancel
in-flight queries on story unmount via useEffect cleanup
- storybook.tsx: save/restore the original window.WebSocket in the
withWebSocket decorator, clear pending timers in close()
- vite.config.mts: add explicit testTimeout, hookTimeout, bail, and
retry settings to the storybook vitest project
Also fix 5 story files that imported from @testing-library/react
instead of storybook/test.
Mathias Fredriksson