Start the "Autoloop TDD" loop.

Goal: implement the target behavior test-first with a green suite
Max iterations: 12
Between iterations run: npm test
Exit when: target behavior is covered and all tests pass

Step 1: Write a failing test for the next behavior, implement the minimum code to pass, refactor, and repeat.

Self-pace this loop. After each iteration, run the check command, read the output, and only continue if the exit condition is not met. Stop when the exit condition passes or max iterations is reached. Give a short status update each pass.