What problem does it solve? It answers whether recent code changes or a completed feature are actually safe to ship, without modifying any code, by mapping changes to the tests that cover them and verifying acceptance criteria against real evidence. ## Core Features & Use Cases - Changes mode: Spot-checks recent or uncommitted changes by diffing the relevant range, mapping changed source areas to the tests that exercise them, and running only those tests plus lint/typecheck. - Feature mode: Runs a comprehensive ship/no-ship pass on a completed feature, verifying each acceptance criterion with evidence and writing a validation report with a clear SHIP or NO-SHIP verdict. - Visual regression support: Compares before/after screenshots with a dependency-free pixel-diff helper for deterministic UI changes. - Use Case: Before opening a PR for a finished feature, run a feature-level validation pass that runs proportionate targeted and regression tests, confirms every acceptance criterion, and produces a validation report linked from the feature plan. ## Quick Start Use the validate skill to check my uncommitted changes against the relevant tests and report what passed, what failed, and what remains uncovered.
