{"agent":"claude","input":"A Linear issue labeled agent says: \"Add Optimistic UI to a React Router Form. Make the default template's form submission update the list immediately with useFetcher and roll back with an error message if the action fails.\" Do the work in this repository, add tests for it, run pnpm typecheck, pnpm build and the new tests, and open a pull request that links back to the issue.","resources":[{"url":"https://github.com/your-org/your-app"}]}