- Add peerDependencies (nuxt ^4.0.0, @nuxtjs/supabase >=1.0.0)
- Add publishConfig access:public for scoped package
- Add keywords, author, structured repository field
- Fix TS2883 in composables by casting useFetch error/refresh to
  portable types (Ref<Error|null>, () => Promise<void>)
- Replace placeholder test with real registry unit tests (11 tests)
- Add vitest.config.ts with standalone esbuild compiler options