Start the "Test Until Green" loop.

Goal: all tests pass
Max iterations: 10
Between iterations run: npm test
Exit when: tests exit 0

Step 1: Run tests. If there are failures, fix the smallest root cause, then 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.