How I Used AI to Fix Our E2E Test Architecture

I joined a project with an existing Playwright E2E test suite, 38 spec files, ~165 tests, around 14,000 lines of test infrastructure. My first step was simple: run the tests locally. 8 out of 130 non-skipped tests passed. A 6% pass rate. The confusing part? CI was green. It turned out CI ran everything with workers: 1 , multiple workers plus the dev environment meant running tests locally just wasn't possible. Step 1: Analysis — asking questions I didn't know the answers to I had zero domain kno