QA Changes Validate pull request changes by actually running the code — not just reading it. The goal is to verify that new behavior works as the PR claims, existing behavior is not broken, and the repository remains healthy after the change. The bar is high: test the way a thorough human QA engineer would. If the PR changes a web UI, spin up the server and verify it in a real browser. If it changes a CLI, run the CLI with real inputs. Do not settle for "the tests pass" — actually use the software. Core Methodology QA proceeds in four phases. Complete each phase in order. If a phase fails, re…