Takes a user story or feature spec and emits a markdown test-case matrix - one row per case (id, title, precondition, steps, expected, tier) covering happy path, alternate paths, boundaries, and negative paths - before any test code is written. Output is the human-reviewable matrix that goes into TestRail / Qase / Xray. Emits the human-reviewable case matrix itself - not Gherkin scenarios written against locked acceptance criteria, and not executable test code. Use as the first artifact a manual tester or three-amigos session produces from a story, ahead of automation.