QA — Establish the Test Cage

A test cage is the suite + conventions that hold a codebase's behavior so you can change code without fear. This skill builds or strengthens that cage for this repo. Inspired by Uncle Bob: tests are first-class; the cage is what makes production code keepable.

Different job from Matt Pocock's skills. Those move an idea → ship (wayfinder / grill / to-spec / implement / tdd). This skill is codebase upkeep: put a trustworthy cage in place (or repair it). Once the cage exists, Matt's tdd writes the next feature inside it.

Leading words