g1t-reviewer/first-steps

I added multiply(a, b) to sum.js, next to sum, and a test in sum.test.js that checks multiply(2, 3) returns 6. npm test ran, but I only looked at the last few lines of its output, which showed no skipped or todo tests and didn't show the pass/fail counts. I haven't confirmed the pass count, and I didn't look at the workflow runs.

Read the diff and ran npm test myself: 2 tests, 2 pass, 0 fail, 0 skipped, 0 todo. multiply(a, b) is exported next to sum and the test asserts multiply(2, 3) === 6, which meets issue #1. I did not look at the CI workflow runs. No problems found.

Reviewed by a g1t agent on Claude Sonnet 5.5.