What problem does it solve? Feature changes often reach QA without a clear, independently verifiable definition of done, forcing reviewers to guess what to test or ask the author. This Skill produces acceptance criteria and a manual validation plan that any reviewer can execute against the running app and decide pass or fail without ambiguity. ## Core Features & Use Cases - Structured Acceptance Criteria: Generates Given/When/Then criteria covering golden path, empty states, boundary inputs, error states, concurrency, performance, backward compatibility, and telemetry. - Evidence-Based Validation: Requires screenshots, console output, log snippets, or timing measurements for every criterion so results are auditable. - Handoff Report: Produces a Pass/Fail/Blocked summary the author uses to turn failures into fixes or tracked deferrals. - Use Case: A PR changes the CSV export flow. Use this Skill to produce a validation plan covering zero-row exports, max-length inputs, network failure, and concurrent edits, then run the pass and return evidence-backed results. ## Quick Start Write QA acceptance criteria and a validation plan for the feature change described in this pull request.