{"agent":"claude","input":"Write property-based tests with fast-check for the core parsing and transformation functions of this library: round trips, idempotence and invariants. Read package.json, the lockfile, the test config and any AGENTS.md first, and install and run tests with the package manager and commands the repository already uses. Add fast-check as a dev dependency if it is not one. For each function, state the property in the test name, generate both schemas and values with edge cases (unicode, -0, NaN, safe-integer bounds, deep nesting), and set numRuns to at least 1000. Run the new tests and then the full suite. Do not change any library source file. If a property fails, keep the shrunk counterexample as a test marked as expected to fail, and list each one with its seed and the property it breaks in the pull request description. Open a pull request.","resources":[{"url":"https://github.com/your-org/your-library"}]}