The page tests (home.test.tsx, selectedBook.test.tsx) and renderWithQueryClient.tsx still mock Open Library and TanStack Query, which were removed. pnpm lint and pnpm test fail on main because of them. Remove these files (and the Open Library fixtures if nothing else uses them), so main is green again. Update the testing section in the README to say the page tests will be rewritten with Apollo's MockedProvider in #33 .